java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:26:04,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:26:04,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:26:04,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:26:04,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:26:04,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:26:04,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:26:04,866 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:26:04,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:26:04,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:26:04,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:26:04,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:26:04,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:26:04,877 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:26:04,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:26:04,880 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:26:04,881 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:26:04,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:26:04,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:26:04,894 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:26:04,897 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:26:04,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:26:04,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:26:04,903 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:26:04,903 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:26:04,907 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:26:04,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:26:04,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:26:04,909 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:26:04,911 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:26:04,911 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:26:04,912 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:26:04,912 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:26:04,913 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:26:04,914 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:26:04,915 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:26:04,915 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 [2018-08-07 12:26:04,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:26:04,930 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:26:04,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:26:04,931 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:26:04,931 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:26:04,932 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:26:04,932 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:26:04,932 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:26:04,932 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:26:04,932 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:26:04,933 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:26:04,933 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:26:04,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:26:04,934 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:26:04,934 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:26:04,934 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:26:04,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:26:04,935 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:26:04,935 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:26:04,935 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:26:04,935 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:26:04,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:26:04,936 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:26:04,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:26:04,936 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:26:04,936 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:26:04,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:26:04,937 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:26:04,937 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:26:04,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:26:04,937 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:26:04,938 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:26:04,938 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:26:04,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:26:05,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:26:05,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:26:05,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:26:05,006 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:26:05,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-08-07 12:26:05,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad73a238a/6564700a70bc4278a380c170c6baa73b/FLAG231e94138 [2018-08-07 12:26:05,839 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:26:05,840 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-08-07 12:26:05,874 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad73a238a/6564700a70bc4278a380c170c6baa73b/FLAG231e94138 [2018-08-07 12:26:05,890 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad73a238a/6564700a70bc4278a380c170c6baa73b [2018-08-07 12:26:05,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:26:05,904 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:26:05,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:26:05,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:26:05,913 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:26:05,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:26:05" (1/1) ... [2018-08-07 12:26:05,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be50527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:05, skipping insertion in model container [2018-08-07 12:26:05,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:26:05" (1/1) ... [2018-08-07 12:26:06,273 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:26:07,301 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:26:07,319 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:26:07,986 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:26:08,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08 WrapperNode [2018-08-07 12:26:08,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:26:08,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:26:08,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:26:08,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:26:08,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:08,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:08,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:26:08,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:26:08,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:26:08,530 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:26:09,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (1/1) ... [2018-08-07 12:26:09,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:26:09,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:26:09,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:26:09,435 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:26:09,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (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 [2018-08-07 12:26:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:26:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:26:09,511 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 [2018-08-07 12:26:09,512 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 [2018-08-07 12:26:09,512 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 [2018-08-07 12:26:09,512 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 [2018-08-07 12:26:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:26:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:26:09,513 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 [2018-08-07 12:26:09,513 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 [2018-08-07 12:26:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:26:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:26:09,514 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 [2018-08-07 12:26:09,514 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 [2018-08-07 12:26:18,703 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:26:18,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:26:18 BoogieIcfgContainer [2018-08-07 12:26:18,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:26:18,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:26:18,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:26:18,708 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:26:18,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:26:05" (1/3) ... [2018-08-07 12:26:18,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2151365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:26:18, skipping insertion in model container [2018-08-07 12:26:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:26:08" (2/3) ... [2018-08-07 12:26:18,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2151365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:26:18, skipping insertion in model container [2018-08-07 12:26:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:26:18" (3/3) ... [2018-08-07 12:26:18,712 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-08-07 12:26:18,722 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:26:18,731 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:26:18,796 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:26:18,796 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:26:18,797 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:26:18,797 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:26:18,797 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:26:18,797 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:26:18,797 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:26:18,797 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:26:18,797 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:26:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-08-07 12:26:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-08-07 12:26:18,857 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:26:18,858 INFO L376 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] [2018-08-07 12:26:18,859 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:26:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1399102452, now seen corresponding path program 1 times [2018-08-07 12:26:18,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:26:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:18,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:26:18,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:18,914 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:26:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:26:19,356 WARN L170 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:26:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:26:19,394 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:26:19,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:26:19,395 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:26:19,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:26:19,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:26:19,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:26:19,419 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-08-07 12:26:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:26:27,762 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-08-07 12:26:27,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:26:27,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-08-07 12:26:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:26:27,815 INFO L225 Difference]: With dead ends: 2446 [2018-08-07 12:26:27,815 INFO L226 Difference]: Without dead ends: 1604 [2018-08-07 12:26:27,826 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:26:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-08-07 12:26:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-08-07 12:26:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-08-07 12:26:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-08-07 12:26:27,988 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-08-07 12:26:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:26:27,988 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-08-07 12:26:27,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:26:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-08-07 12:26:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-08-07 12:26:27,997 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:26:27,998 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:26:27,998 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:26:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1572758482, now seen corresponding path program 1 times [2018-08-07 12:26:27,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:26:28,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:28,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:26:28,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:28,000 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:26:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:26:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:26:28,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:26:28,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:26:28,404 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:26:28,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:26:28,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:26:28,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:26:28,407 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-08-07 12:26:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:26:45,108 INFO L93 Difference]: Finished difference Result 4793 states and 8579 transitions. [2018-08-07 12:26:45,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:26:45,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-08-07 12:26:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:26:45,140 INFO L225 Difference]: With dead ends: 4793 [2018-08-07 12:26:45,140 INFO L226 Difference]: Without dead ends: 3195 [2018-08-07 12:26:45,146 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:26:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-08-07 12:26:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2018-08-07 12:26:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2018-08-07 12:26:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4866 transitions. [2018-08-07 12:26:45,258 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4866 transitions. Word has length 114 [2018-08-07 12:26:45,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:26:45,259 INFO L480 AbstractCegarLoop]: Abstraction has 3176 states and 4866 transitions. [2018-08-07 12:26:45,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:26:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4866 transitions. [2018-08-07 12:26:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-08-07 12:26:45,271 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:26:45,272 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:26:45,272 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:26:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1601416815, now seen corresponding path program 1 times [2018-08-07 12:26:45,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:26:45,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:45,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:26:45,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:45,275 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:26:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:26:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:26:45,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:26:45,539 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:26:45,539 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:26:45,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:26:45,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:26:45,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:26:45,540 INFO L87 Difference]: Start difference. First operand 3176 states and 4866 transitions. Second operand 6 states. [2018-08-07 12:26:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:26:58,146 INFO L93 Difference]: Finished difference Result 11176 states and 17452 transitions. [2018-08-07 12:26:58,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:26:58,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-08-07 12:26:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:26:58,198 INFO L225 Difference]: With dead ends: 11176 [2018-08-07 12:26:58,198 INFO L226 Difference]: Without dead ends: 8006 [2018-08-07 12:26:58,219 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:26:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2018-08-07 12:26:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 7933. [2018-08-07 12:26:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2018-08-07 12:26:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 11790 transitions. [2018-08-07 12:26:58,450 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 11790 transitions. Word has length 119 [2018-08-07 12:26:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:26:58,451 INFO L480 AbstractCegarLoop]: Abstraction has 7933 states and 11790 transitions. [2018-08-07 12:26:58,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:26:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 11790 transitions. [2018-08-07 12:26:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-08-07 12:26:58,458 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:26:58,458 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:26:58,458 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:26:58,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1773790607, now seen corresponding path program 1 times [2018-08-07 12:26:58,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:26:58,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:58,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:26:58,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:26:58,464 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:26:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:26:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:26:58,853 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:26:58,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:26:58,853 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:26:58,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:26:58,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:26:58,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:26:58,855 INFO L87 Difference]: Start difference. First operand 7933 states and 11790 transitions. Second operand 5 states. [2018-08-07 12:27:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:27:10,387 INFO L93 Difference]: Finished difference Result 24418 states and 37210 transitions. [2018-08-07 12:27:10,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:27:10,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-08-07 12:27:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:27:10,458 INFO L225 Difference]: With dead ends: 24418 [2018-08-07 12:27:10,458 INFO L226 Difference]: Without dead ends: 16491 [2018-08-07 12:27:10,483 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:27:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16491 states. [2018-08-07 12:27:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16491 to 16262. [2018-08-07 12:27:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16262 states. [2018-08-07 12:27:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 22930 transitions. [2018-08-07 12:27:10,883 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 22930 transitions. Word has length 135 [2018-08-07 12:27:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:27:10,883 INFO L480 AbstractCegarLoop]: Abstraction has 16262 states and 22930 transitions. [2018-08-07 12:27:10,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:27:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 22930 transitions. [2018-08-07 12:27:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-08-07 12:27:10,886 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:27:10,887 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:27:10,887 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:27:10,887 INFO L82 PathProgramCache]: Analyzing trace with hash 708226614, now seen corresponding path program 1 times [2018-08-07 12:27:10,887 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:27:10,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:10,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:10,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:10,889 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:27:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:11,236 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:27:11,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:27:11,236 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:27:11,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:27:11,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:27:11,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:27:11,238 INFO L87 Difference]: Start difference. First operand 16262 states and 22930 transitions. Second operand 5 states. [2018-08-07 12:27:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:27:31,632 INFO L93 Difference]: Finished difference Result 59065 states and 87194 transitions. [2018-08-07 12:27:31,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:27:31,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-08-07 12:27:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:27:31,825 INFO L225 Difference]: With dead ends: 59065 [2018-08-07 12:27:31,825 INFO L226 Difference]: Without dead ends: 42809 [2018-08-07 12:27:31,912 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:27:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42809 states. [2018-08-07 12:27:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42809 to 42298. [2018-08-07 12:27:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42298 states. [2018-08-07 12:27:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42298 states to 42298 states and 56691 transitions. [2018-08-07 12:27:33,216 INFO L78 Accepts]: Start accepts. Automaton has 42298 states and 56691 transitions. Word has length 144 [2018-08-07 12:27:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:27:33,217 INFO L480 AbstractCegarLoop]: Abstraction has 42298 states and 56691 transitions. [2018-08-07 12:27:33,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:27:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 42298 states and 56691 transitions. [2018-08-07 12:27:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-08-07 12:27:33,222 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:27:33,225 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:27:33,226 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:27:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash 233799721, now seen corresponding path program 1 times [2018-08-07 12:27:33,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:27:33,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:33,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:33,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:33,228 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:27:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:33,581 WARN L170 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:27:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:34,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:27:34,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:27:34,042 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:27:34,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:27:34,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:27:34,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:27:34,043 INFO L87 Difference]: Start difference. First operand 42298 states and 56691 transitions. Second operand 6 states. [2018-08-07 12:27:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:27:47,071 INFO L93 Difference]: Finished difference Result 110138 states and 155444 transitions. [2018-08-07 12:27:47,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:27:47,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-08-07 12:27:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:27:47,295 INFO L225 Difference]: With dead ends: 110138 [2018-08-07 12:27:47,296 INFO L226 Difference]: Without dead ends: 67846 [2018-08-07 12:27:47,422 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:27:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67846 states. [2018-08-07 12:27:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67846 to 67457. [2018-08-07 12:27:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67457 states. [2018-08-07 12:27:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67457 states to 67457 states and 90911 transitions. [2018-08-07 12:27:48,762 INFO L78 Accepts]: Start accepts. Automaton has 67457 states and 90911 transitions. Word has length 203 [2018-08-07 12:27:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:27:48,763 INFO L480 AbstractCegarLoop]: Abstraction has 67457 states and 90911 transitions. [2018-08-07 12:27:48,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:27:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 67457 states and 90911 transitions. [2018-08-07 12:27:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-08-07 12:27:48,771 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:27:48,771 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:27:48,771 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:27:48,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1869125427, now seen corresponding path program 1 times [2018-08-07 12:27:48,772 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:27:48,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:48,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:48,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:48,773 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:27:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:49,267 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:27:49,268 INFO L194 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 [2018-08-07 12:27:49,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:49,282 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:27:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:49,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:27:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:49,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:27:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:50,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:27:50,045 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:27:50,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:50,062 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:27:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:50,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:27:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:51,000 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:27:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:51,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:27:51,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-08-07 12:27:51,356 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:27:51,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:27:51,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:27:51,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:27:51,359 INFO L87 Difference]: Start difference. First operand 67457 states and 90911 transitions. Second operand 9 states. [2018-08-07 12:28:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:28:14,273 INFO L93 Difference]: Finished difference Result 240658 states and 434634 transitions. [2018-08-07 12:28:14,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-08-07 12:28:14,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2018-08-07 12:28:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:28:15,437 INFO L225 Difference]: With dead ends: 240658 [2018-08-07 12:28:15,437 INFO L226 Difference]: Without dead ends: 140725 [2018-08-07 12:28:16,859 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 964 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-08-07 12:28:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140725 states. [2018-08-07 12:28:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140725 to 138794. [2018-08-07 12:28:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138794 states. [2018-08-07 12:28:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138794 states to 138794 states and 195201 transitions. [2018-08-07 12:28:21,271 INFO L78 Accepts]: Start accepts. Automaton has 138794 states and 195201 transitions. Word has length 241 [2018-08-07 12:28:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:28:21,271 INFO L480 AbstractCegarLoop]: Abstraction has 138794 states and 195201 transitions. [2018-08-07 12:28:21,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:28:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 138794 states and 195201 transitions. [2018-08-07 12:28:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-08-07 12:28:21,288 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:28:21,288 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:28:21,288 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:28:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1501309236, now seen corresponding path program 1 times [2018-08-07 12:28:21,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:28:21,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:21,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:21,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:21,290 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:28:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-08-07 12:28:22,639 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:28:22,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:28:22,639 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:28:22,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:28:22,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:28:22,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:28:22,640 INFO L87 Difference]: Start difference. First operand 138794 states and 195201 transitions. Second operand 4 states. [2018-08-07 12:28:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:28:35,891 INFO L93 Difference]: Finished difference Result 276022 states and 392867 transitions. [2018-08-07 12:28:35,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:28:35,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-08-07 12:28:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:28:36,389 INFO L225 Difference]: With dead ends: 276022 [2018-08-07 12:28:36,389 INFO L226 Difference]: Without dead ends: 137254 [2018-08-07 12:28:36,608 INFO L603 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 [2018-08-07 12:28:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137254 states. [2018-08-07 12:28:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137254 to 137254. [2018-08-07 12:28:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137254 states. [2018-08-07 12:28:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137254 states to 137254 states and 187924 transitions. [2018-08-07 12:28:38,820 INFO L78 Accepts]: Start accepts. Automaton has 137254 states and 187924 transitions. Word has length 306 [2018-08-07 12:28:38,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:28:38,820 INFO L480 AbstractCegarLoop]: Abstraction has 137254 states and 187924 transitions. [2018-08-07 12:28:38,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:28:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 137254 states and 187924 transitions. [2018-08-07 12:28:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-08-07 12:28:38,857 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:28:38,857 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:28:38,857 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:28:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2090640306, now seen corresponding path program 1 times [2018-08-07 12:28:38,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:28:38,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:38,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:38,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:38,859 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:28:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:40,297 WARN L170 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 31 [2018-08-07 12:28:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 265 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:28:40,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:28:40,728 INFO L194 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 [2018-08-07 12:28:40,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:40,736 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:28:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:40,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:28:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-08-07 12:28:41,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:28:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-08-07 12:28:41,407 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:28:41,407 INFO L194 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 [2018-08-07 12:28:41,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:41,423 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:28:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:41,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:28:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-08-07 12:28:41,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:28:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-08-07 12:28:42,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:28:42,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-08-07 12:28:42,042 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:28:42,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-08-07 12:28:42,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-08-07 12:28:42,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-08-07 12:28:42,044 INFO L87 Difference]: Start difference. First operand 137254 states and 187924 transitions. Second operand 16 states. [2018-08-07 12:29:01,324 WARN L170 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2018-08-07 12:29:03,179 WARN L170 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-08-07 12:29:10,471 WARN L170 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-08-07 12:29:18,081 WARN L170 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-08-07 12:29:37,573 WARN L170 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-08-07 12:30:00,690 WARN L170 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 Received shutdown request... [2018-08-07 12:30:01,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-08-07 12:30:01,774 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:30:01,781 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:30:01,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:30:01 BoogieIcfgContainer [2018-08-07 12:30:01,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:30:01,782 INFO L168 Benchmark]: Toolchain (without parser) took 235879.09 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -609.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,783 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-08-07 12:30:01,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2349.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,785 INFO L168 Benchmark]: Boogie Preprocessor took 904.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 903.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,787 INFO L168 Benchmark]: RCFGBuilder took 9269.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -178.7 MB). Peak memory consumption was 745.9 MB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,789 INFO L168 Benchmark]: TraceAbstraction took 223076.12 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.5 GB in the beginning and 2.0 GB in the end (delta: 446.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-08-07 12:30:01,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2349.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 904.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 903.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9269.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -178.7 MB). Peak memory consumption was 745.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223076.12 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.5 GB in the beginning and 2.0 GB in the end (delta: 446.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (137254states) and FLOYD_HOARE automaton (currently 105 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (211195 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 222.9s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 202.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2541 SDtfs, 53282 SDslu, 3133 SDs, 0 SdLazy, 101567 SolverSat, 19970 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 157.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2684 GetRequests, 2502 SyntacticMatches, 11 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4977 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138794occurred in iteration=7, 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: 10.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 3152 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 2864 NumberOfCodeBlocks, 2864 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4049 ConstructedInterpolants, 0 QuantifiedInterpolants, 4226564 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2140 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 2696/2797 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-30-01-809.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-30-01-809.csv Completed graceful shutdown