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/Problem13_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:15:34,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:15:34,236 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:15:34,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:15:34,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:15:34,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:15:34,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:15:34,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:15:34,257 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:15:34,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:15:34,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:15:34,259 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:15:34,260 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:15:34,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:15:34,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:15:34,263 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:15:34,264 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:15:34,266 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:15:34,268 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:15:34,270 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:15:34,271 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:15:34,272 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:15:34,275 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:15:34,275 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:15:34,275 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:15:34,276 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:15:34,277 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:15:34,278 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:15:34,279 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:15:34,280 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:15:34,280 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:15:34,281 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:15:34,281 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:15:34,282 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:15:34,283 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:15:34,284 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:15:34,284 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:15:34,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:15:34,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:15:34,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:15:34,317 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:15:34,317 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:15:34,317 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:15:34,317 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:15:34,317 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:15:34,318 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:15:34,318 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:15:34,318 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:15:34,319 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:15:34,319 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:15:34,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:15:34,319 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:15:34,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:15:34,320 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:15:34,320 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:15:34,320 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:15:34,320 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:15:34,321 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:15:34,321 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:15:34,321 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:15:34,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:15:34,321 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:15:34,322 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:15:34,323 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:15:34,323 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:15:34,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:15:34,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:15:34,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:15:34,395 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:15:34,395 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:15:34,396 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-07-24 14:15:34,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bfc3555/e26e81c29330410eb2162f656d6893b6/FLAGea5abf55c [2018-07-24 14:15:35,284 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:15:35,287 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-07-24 14:15:35,344 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bfc3555/e26e81c29330410eb2162f656d6893b6/FLAGea5abf55c [2018-07-24 14:15:35,366 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bfc3555/e26e81c29330410eb2162f656d6893b6 [2018-07-24 14:15:35,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:15:35,385 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:15:35,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:15:35,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:15:35,398 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:15:35,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:15:35" (1/1) ... [2018-07-24 14:15:35,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212fe84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:35, skipping insertion in model container [2018-07-24 14:15:35,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:15:35" (1/1) ... [2018-07-24 14:15:35,802 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:15:36,978 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:15:36,997 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:15:37,870 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:15:38,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38 WrapperNode [2018-07-24 14:15:38,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:15:38,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:15:38,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:15:38,306 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:15:38,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:38,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:38,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:15:38,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:15:38,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:15:38,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:15:39,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:39,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:39,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:39,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:39,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:40,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:40,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... [2018-07-24 14:15:40,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:15:40,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:15:40,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:15:40,325 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:15:40,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:15:40,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:15:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:15:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:15:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:15:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:15:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:15:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:15:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:15:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:15:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:15:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:15:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:15:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:15:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:15:52,504 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:15:52,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:15:52 BoogieIcfgContainer [2018-07-24 14:15:52,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:15:52,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:15:52,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:15:52,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:15:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:15:35" (1/3) ... [2018-07-24 14:15:52,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dec35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:15:52, skipping insertion in model container [2018-07-24 14:15:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:15:38" (2/3) ... [2018-07-24 14:15:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dec35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:15:52, skipping insertion in model container [2018-07-24 14:15:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:15:52" (3/3) ... [2018-07-24 14:15:52,516 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-07-24 14:15:52,526 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:15:52,536 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:15:52,600 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:15:52,600 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:15:52,601 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:15:52,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:15:52,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:15:52,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:15:52,601 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:15:52,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:15:52,601 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:15:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:15:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-24 14:15:52,651 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:52,652 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] [2018-07-24 14:15:52,653 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 14:15:52,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1069182300, now seen corresponding path program 1 times [2018-07-24 14:15:52,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:52,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:52,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:52,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:52,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:53,128 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 14:15:53,130 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:53,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:15:53,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:53,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:15:53,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:15:53,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:15:53,156 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:16:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:01,997 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 14:16:02,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:16:02,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-07-24 14:16:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:02,055 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 14:16:02,055 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 14:16:02,072 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:16:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 14:16:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 14:16:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 14:16:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 14:16:02,251 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 44 [2018-07-24 14:16:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:02,252 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 14:16:02,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:16:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 14:16:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-24 14:16:02,264 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:02,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:02,265 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 14:16:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1691534068, now seen corresponding path program 1 times [2018-07-24 14:16:02,265 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:02,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:02,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:02,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:02,795 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:16:02,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:16:02,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:16:02,798 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:16:02,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:16:02,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:16:02,799 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 14:16:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:23,467 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-07-24 14:16:23,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:16:23,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-07-24 14:16:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:23,494 INFO L225 Difference]: With dead ends: 5736 [2018-07-24 14:16:23,494 INFO L226 Difference]: Without dead ends: 3768 [2018-07-24 14:16:23,501 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:16:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-07-24 14:16:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-07-24 14:16:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-07-24 14:16:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-07-24 14:16:23,601 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 120 [2018-07-24 14:16:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:23,602 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-07-24 14:16:23,602 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:16:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-07-24 14:16:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-24 14:16:23,607 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:23,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:23,608 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 14:16:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash 642233136, now seen corresponding path program 1 times [2018-07-24 14:16:23,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:23,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:23,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:23,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:23,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:23,844 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:16:23,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:16:23,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:16:23,845 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:16:23,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:16:23,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:16:23,846 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-07-24 14:16:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:40,630 INFO L93 Difference]: Finished difference Result 12385 states and 19155 transitions. [2018-07-24 14:16:40,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:16:40,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-07-24 14:16:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:40,678 INFO L225 Difference]: With dead ends: 12385 [2018-07-24 14:16:40,678 INFO L226 Difference]: Without dead ends: 8705 [2018-07-24 14:16:40,695 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:16:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2018-07-24 14:16:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8670. [2018-07-24 14:16:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8670 states. [2018-07-24 14:16:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 12398 transitions. [2018-07-24 14:16:40,898 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 12398 transitions. Word has length 134 [2018-07-24 14:16:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:40,899 INFO L471 AbstractCegarLoop]: Abstraction has 8670 states and 12398 transitions. [2018-07-24 14:16:40,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:16:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 12398 transitions. [2018-07-24 14:16:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-24 14:16:40,902 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:40,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:40,903 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 14:16:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash 96380732, now seen corresponding path program 1 times [2018-07-24 14:16:40,904 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:40,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:40,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:40,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:40,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:41,383 WARN L169 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-07-24 14:16:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:41,678 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:16:41,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:16:41,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:16:41,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:16:41,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:16:41,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:16:41,680 INFO L87 Difference]: Start difference. First operand 8670 states and 12398 transitions. Second operand 6 states. [2018-07-24 14:17:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:17:14,218 INFO L93 Difference]: Finished difference Result 26605 states and 38550 transitions. [2018-07-24 14:17:14,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:17:14,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-07-24 14:17:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:17:14,311 INFO L225 Difference]: With dead ends: 26605 [2018-07-24 14:17:14,311 INFO L226 Difference]: Without dead ends: 17941 [2018-07-24 14:17:14,345 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:17:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17941 states. [2018-07-24 14:17:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17941 to 17690. [2018-07-24 14:17:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17690 states. [2018-07-24 14:17:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17690 states to 17690 states and 25111 transitions. [2018-07-24 14:17:14,985 INFO L78 Accepts]: Start accepts. Automaton has 17690 states and 25111 transitions. Word has length 160 [2018-07-24 14:17:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:17:14,986 INFO L471 AbstractCegarLoop]: Abstraction has 17690 states and 25111 transitions. [2018-07-24 14:17:14,986 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:17:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17690 states and 25111 transitions. [2018-07-24 14:17:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-24 14:17:14,991 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:17:14,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:17:14,992 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 14:17:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash -843772423, now seen corresponding path program 1 times [2018-07-24 14:17:14,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:17:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:17:14,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:17:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:17:14,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:17:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:17:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:17:15,703 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:17:15,703 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 14:17:15,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:17:15,722 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:17:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:17:15,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:17:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:17:16,053 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:17:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:17:16,618 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:17:16,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-07-24 14:17:16,618 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:17:16,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:17:16,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:17:16,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:17:16,624 INFO L87 Difference]: Start difference. First operand 17690 states and 25111 transitions. Second operand 6 states. [2018-07-24 14:17:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:17:37,839 INFO L93 Difference]: Finished difference Result 57955 states and 88413 transitions. [2018-07-24 14:17:37,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:17:37,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-07-24 14:17:37,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:17:38,064 INFO L225 Difference]: With dead ends: 57955 [2018-07-24 14:17:38,065 INFO L226 Difference]: Without dead ends: 41076 [2018-07-24 14:17:38,138 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:17:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41076 states. [2018-07-24 14:17:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41076 to 40875. [2018-07-24 14:17:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40875 states. [2018-07-24 14:17:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40875 states to 40875 states and 59673 transitions. [2018-07-24 14:17:39,085 INFO L78 Accepts]: Start accepts. Automaton has 40875 states and 59673 transitions. Word has length 174 [2018-07-24 14:17:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:17:39,086 INFO L471 AbstractCegarLoop]: Abstraction has 40875 states and 59673 transitions. [2018-07-24 14:17:39,086 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:17:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 40875 states and 59673 transitions. [2018-07-24 14:17:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-24 14:17:39,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:17:39,092 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:17:39,092 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 14:17:39,093 INFO L82 PathProgramCache]: Analyzing trace with hash 297769784, now seen corresponding path program 1 times [2018-07-24 14:17:39,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:17:39,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:17:39,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:17:39,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:17:39,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:17:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:17:39,371 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:17:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:17:39,766 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:17:39,766 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) [2018-07-24 14:17:39,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:17:39,783 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:17:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:17:39,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:17:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-24 14:17:40,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:17:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:17:40,930 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:17:40,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:17:40,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:17:40,931 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:17:40,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:17:40,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:17:40,933 INFO L87 Difference]: Start difference. First operand 40875 states and 59673 transitions. Second operand 5 states. [2018-07-24 14:17:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:17:57,244 INFO L93 Difference]: Finished difference Result 133981 states and 211466 transitions. [2018-07-24 14:17:57,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:17:57,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-07-24 14:17:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:17:58,070 INFO L225 Difference]: With dead ends: 133981 [2018-07-24 14:17:58,071 INFO L226 Difference]: Without dead ends: 93112 [2018-07-24 14:17:58,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:17:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93112 states. [2018-07-24 14:17:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93112 to 92758. [2018-07-24 14:17:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92758 states. [2018-07-24 14:18:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92758 states to 92758 states and 129707 transitions. [2018-07-24 14:18:00,013 INFO L78 Accepts]: Start accepts. Automaton has 92758 states and 129707 transitions. Word has length 198 [2018-07-24 14:18:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:18:00,013 INFO L471 AbstractCegarLoop]: Abstraction has 92758 states and 129707 transitions. [2018-07-24 14:18:00,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:18:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 92758 states and 129707 transitions. [2018-07-24 14:18:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-24 14:18:00,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:00,033 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:18:00,033 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 14:18:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1419513625, now seen corresponding path program 1 times [2018-07-24 14:18:00,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:00,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:00,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:00,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:00,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:00,401 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:18:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 75 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:18:00,887 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:18:00,887 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 14:18:00,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:00,907 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:18:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:01,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:18:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:01,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:18:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:02,272 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:18:02,272 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 14:18:02,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:02,301 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:18:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:02,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:18:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:02,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:18:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:03,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:18:03,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-07-24 14:18:03,064 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:18:03,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:18:03,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:18:03,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:18:03,068 INFO L87 Difference]: Start difference. First operand 92758 states and 129707 transitions. Second operand 9 states. [2018-07-24 14:18:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:18:28,748 INFO L93 Difference]: Finished difference Result 281593 states and 445519 transitions. [2018-07-24 14:18:28,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-24 14:18:28,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2018-07-24 14:18:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:18:29,548 INFO L225 Difference]: With dead ends: 281593 [2018-07-24 14:18:29,549 INFO L226 Difference]: Without dead ends: 189645 [2018-07-24 14:18:30,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1059 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 14:18:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189645 states. [2018-07-24 14:18:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189645 to 189081. [2018-07-24 14:18:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189081 states. [2018-07-24 14:18:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189081 states to 189081 states and 252576 transitions. [2018-07-24 14:18:34,306 INFO L78 Accepts]: Start accepts. Automaton has 189081 states and 252576 transitions. Word has length 265 [2018-07-24 14:18:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:18:34,307 INFO L471 AbstractCegarLoop]: Abstraction has 189081 states and 252576 transitions. [2018-07-24 14:18:34,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:18:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 189081 states and 252576 transitions. [2018-07-24 14:18:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-24 14:18:34,319 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:34,320 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 14:18:34,320 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 14:18:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1294661756, now seen corresponding path program 1 times [2018-07-24 14:18:34,320 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:34,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:34,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:34,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:34,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-07-24 14:18:34,606 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:18:34,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:18:34,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:18:34,607 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:18:34,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:18:34,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:18:34,607 INFO L87 Difference]: Start difference. First operand 189081 states and 252576 transitions. Second operand 4 states. [2018-07-24 14:18:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:18:47,633 INFO L93 Difference]: Finished difference Result 406546 states and 555933 transitions. [2018-07-24 14:18:47,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:18:47,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-07-24 14:18:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:18:48,224 INFO L225 Difference]: With dead ends: 406546 [2018-07-24 14:18:48,224 INFO L226 Difference]: Without dead ends: 218275 [2018-07-24 14:18:48,550 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 14:18:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218275 states. [2018-07-24 14:18:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218275 to 217427. [2018-07-24 14:18:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217427 states. [2018-07-24 14:18:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217427 states to 217427 states and 281119 transitions. [2018-07-24 14:18:52,827 INFO L78 Accepts]: Start accepts. Automaton has 217427 states and 281119 transitions. Word has length 292 [2018-07-24 14:18:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:18:52,828 INFO L471 AbstractCegarLoop]: Abstraction has 217427 states and 281119 transitions. [2018-07-24 14:18:52,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:18:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 217427 states and 281119 transitions. [2018-07-24 14:18:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-24 14:18:52,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:52,899 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:18:52,899 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 14:18:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash -827193971, now seen corresponding path program 1 times [2018-07-24 14:18:52,900 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:52,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:52,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:52,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:52,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:53,303 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:18:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 286 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 14:18:53,798 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:18:53,798 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 14:18:53,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:53,807 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:18:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:53,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:18:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-07-24 14:18:55,407 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:18:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-07-24 14:18:55,545 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:18:55,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:18:55,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:18:55,546 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:18:55,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:18:55,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:18:55,547 INFO L87 Difference]: Start difference. First operand 217427 states and 281119 transitions. Second operand 3 states. [2018-07-24 14:19:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:19:07,269 INFO L93 Difference]: Finished difference Result 430571 states and 563469 transitions. [2018-07-24 14:19:07,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:19:07,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 414 [2018-07-24 14:19:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:19:07,919 INFO L225 Difference]: With dead ends: 430571 [2018-07-24 14:19:07,919 INFO L226 Difference]: Without dead ends: 213954 [2018-07-24 14:19:08,243 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 829 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:19:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213954 states. Received shutdown request... [2018-07-24 14:19:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213954 to 210736. [2018-07-24 14:19:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210736 states. [2018-07-24 14:19:19,369 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:19:19,374 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:19:19,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:19:19 BoogieIcfgContainer [2018-07-24 14:19:19,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:19:19,375 INFO L168 Benchmark]: Toolchain (without parser) took 223994.36 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,376 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:19:19,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2918.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 338.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 988.2 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,378 INFO L168 Benchmark]: Boogie Preprocessor took 1679.62 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 953.2 MB). Free memory was 988.2 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,379 INFO L168 Benchmark]: RCFGBuilder took 12181.05 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 239.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -39.1 MB). Peak memory consumption was 794.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,380 INFO L168 Benchmark]: TraceAbstraction took 206867.92 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -879.0 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:19:19,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2918.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 338.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 988.2 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1679.62 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 953.2 MB). Free memory was 988.2 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12181.05 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 239.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -39.1 MB). Peak memory consumption was 794.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206867.92 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -879.0 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 172.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6051 SDtfs, 32815 SDslu, 4666 SDs, 0 SdLazy, 60874 SolverSat, 15619 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 138.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2738 GetRequests, 2638 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217427occurred in iteration=8, 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: 22.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 2336 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 3117 NumberOfCodeBlocks, 3117 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4414 ConstructedInterpolants, 0 QuantifiedInterpolants, 3246083 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2398 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 2770/3152 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/Problem13_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-19-19-402.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-19-19-402.csv Completed graceful shutdown