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-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 22:36:35,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 22:36:35,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 22:36:35,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 22:36:35,796 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 22:36:35,797 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 22:36:35,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 22:36:35,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 22:36:35,803 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 22:36:35,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 22:36:35,806 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 22:36:35,807 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 22:36:35,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 22:36:35,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 22:36:35,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 22:36:35,820 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 22:36:35,821 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 22:36:35,823 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 22:36:35,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 22:36:35,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 22:36:35,832 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 22:36:35,833 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 22:36:35,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 22:36:35,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 22:36:35,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 22:36:35,839 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 22:36:35,840 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 22:36:35,841 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 22:36:35,842 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 22:36:35,843 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 22:36:35,843 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 22:36:35,844 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 22:36:35,844 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 22:36:35,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 22:36:35,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 22:36:35,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 22:36:35,846 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-11 22:36:35,869 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 22:36:35,870 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 22:36:35,871 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 22:36:35,871 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 22:36:35,871 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 22:36:35,871 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 22:36:35,872 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 22:36:35,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 22:36:35,872 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 22:36:35,872 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 22:36:35,872 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 22:36:35,873 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 22:36:35,874 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 22:36:35,874 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 22:36:35,874 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 22:36:35,874 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 22:36:35,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 22:36:35,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 22:36:35,876 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 22:36:35,876 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 22:36:35,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 22:36:35,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 22:36:35,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 22:36:35,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 22:36:35,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 22:36:35,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 22:36:35,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 22:36:35,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 22:36:35,878 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 22:36:35,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 22:36:35,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 22:36:35,879 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 22:36:35,879 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 22:36:35,879 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 22:36:35,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 22:36:35,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 22:36:35,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 22:36:35,976 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 22:36:35,977 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 22:36:35,977 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c [2018-09-11 22:36:36,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ee7f064/20d079dbf5e6418295f1ae7eaa12554f/FLAG850d6369e [2018-09-11 22:36:36,627 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 22:36:36,629 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label26_true-unreach-call_false-termination.c [2018-09-11 22:36:36,651 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ee7f064/20d079dbf5e6418295f1ae7eaa12554f/FLAG850d6369e [2018-09-11 22:36:36,673 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ee7f064/20d079dbf5e6418295f1ae7eaa12554f [2018-09-11 22:36:36,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 22:36:36,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 22:36:36,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 22:36:36,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 22:36:36,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 22:36:36,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:36:36" (1/1) ... [2018-09-11 22:36:36,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56aae051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:36, skipping insertion in model container [2018-09-11 22:36:36,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:36:36" (1/1) ... [2018-09-11 22:36:36,973 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 22:36:37,308 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:36:37,329 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 22:36:37,471 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:36:37,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37 WrapperNode [2018-09-11 22:36:37,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 22:36:37,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 22:36:37,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 22:36:37,526 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 22:36:37,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 22:36:37,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 22:36:37,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 22:36:37,668 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 22:36:37,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (1/1) ... [2018-09-11 22:36:37,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 22:36:37,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 22:36:37,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 22:36:37,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 22:36:37,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (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 [2018-09-11 22:36:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-11 22:36:38,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-09-11 22:36:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 22:36:38,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 22:36:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 22:36:38,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 22:36:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 22:36:38,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 22:36:41,895 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 22:36:41,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:36:41 BoogieIcfgContainer [2018-09-11 22:36:41,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 22:36:41,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 22:36:41,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 22:36:41,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 22:36:41,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 10:36:36" (1/3) ... [2018-09-11 22:36:41,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f446a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:36:41, skipping insertion in model container [2018-09-11 22:36:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:36:37" (2/3) ... [2018-09-11 22:36:41,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f446a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:36:41, skipping insertion in model container [2018-09-11 22:36:41,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:36:41" (3/3) ... [2018-09-11 22:36:41,905 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label26_true-unreach-call_false-termination.c [2018-09-11 22:36:41,915 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 22:36:41,924 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 22:36:41,978 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 22:36:41,979 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 22:36:41,979 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 22:36:41,979 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 22:36:41,979 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 22:36:41,979 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 22:36:41,981 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 22:36:41,981 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 22:36:41,981 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 22:36:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 22:36:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-11 22:36:42,030 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:36:42,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:36:42,032 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:36:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash 643877559, now seen corresponding path program 1 times [2018-09-11 22:36:42,040 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:36:42,041 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2018-09-11 22:36:42,044 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [483], [485], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 22:36:42,113 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:36:42,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:36:44,954 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:36:44,956 INFO L272 AbstractInterpreter]: Visited 72 different actions 72 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 22:36:44,979 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:36:46,342 INFO L232 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 80.9% of their original sizes. [2018-09-11 22:36:46,342 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:36:46,642 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:36:46,644 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:36:46,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 22:36:46,645 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:36:46,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 22:36:46,659 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 22:36:46,660 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:36:46,663 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 22:36:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:36:52,991 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 22:36:52,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 22:36:52,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2018-09-11 22:36:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:36:53,013 INFO L225 Difference]: With dead ends: 693 [2018-09-11 22:36:53,013 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 22:36:53,021 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:36:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 22:36:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 22:36:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 22:36:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 22:36:53,104 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 73 [2018-09-11 22:36:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:36:53,105 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 22:36:53,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 22:36:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 22:36:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-11 22:36:53,115 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:36:53,115 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-11 22:36:53,116 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:36:53,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1228229323, now seen corresponding path program 1 times [2018-09-11 22:36:53,116 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:36:53,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2018-09-11 22:36:53,117 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [483], [485], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:36:53,123 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:36:53,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:02,470 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:02,470 INFO L272 AbstractInterpreter]: Visited 92 different actions 177 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:37:02,476 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:05,461 INFO L232 lantSequenceWeakener]: Weakened 156 states. On average, predicates are now at 78.98% of their original sizes. [2018-09-11 22:37:05,461 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:10,287 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:10,288 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:10,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-11 22:37:10,288 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:10,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-11 22:37:10,290 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-11 22:37:10,291 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-09-11 22:37:10,291 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 16 states. [2018-09-11 22:37:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:30,644 INFO L93 Difference]: Finished difference Result 1421 states and 2494 transitions. [2018-09-11 22:37:30,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-11 22:37:30,645 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2018-09-11 22:37:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:30,659 INFO L225 Difference]: With dead ends: 1421 [2018-09-11 22:37:30,660 INFO L226 Difference]: Without dead ends: 1176 [2018-09-11 22:37:30,664 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 103 SyntacticMatches, 40 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2018-09-11 22:37:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2018-09-11 22:37:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2018-09-11 22:37:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2018-09-11 22:37:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1406 transitions. [2018-09-11 22:37:30,743 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1406 transitions. Word has length 158 [2018-09-11 22:37:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:30,744 INFO L480 AbstractCegarLoop]: Abstraction has 1173 states and 1406 transitions. [2018-09-11 22:37:30,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-11 22:37:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1406 transitions. [2018-09-11 22:37:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-09-11 22:37:30,750 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:30,751 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-11 22:37:30,751 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:37:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash 977183583, now seen corresponding path program 1 times [2018-09-11 22:37:30,752 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:30,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-09-11 22:37:30,753 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [483], [485], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:37:30,759 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:30,759 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:41,651 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:41,651 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:37:41,657 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:43,703 INFO L232 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 78.74% of their original sizes. [2018-09-11 22:37:43,703 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:44,168 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:44,168 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:44,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 22:37:44,169 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:44,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 22:37:44,170 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 22:37:44,170 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-11 22:37:44,170 INFO L87 Difference]: Start difference. First operand 1173 states and 1406 transitions. Second operand 12 states. [2018-09-11 22:37:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:52,321 INFO L93 Difference]: Finished difference Result 1606 states and 2190 transitions. [2018-09-11 22:37:52,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 22:37:52,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2018-09-11 22:37:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:52,337 INFO L225 Difference]: With dead ends: 1606 [2018-09-11 22:37:52,337 INFO L226 Difference]: Without dead ends: 1361 [2018-09-11 22:37:52,339 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 192 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-09-11 22:37:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2018-09-11 22:37:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1358. [2018-09-11 22:37:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2018-09-11 22:37:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1604 transitions. [2018-09-11 22:37:52,394 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1604 transitions. Word has length 184 [2018-09-11 22:37:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:52,394 INFO L480 AbstractCegarLoop]: Abstraction has 1358 states and 1604 transitions. [2018-09-11 22:37:52,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 22:37:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1604 transitions. [2018-09-11 22:37:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-09-11 22:37:52,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:52,401 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:37:52,402 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:37:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1295161141, now seen corresponding path program 1 times [2018-09-11 22:37:52,402 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:52,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 270 with the following transitions: [2018-09-11 22:37:52,403 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [483], [485], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:37:52,408 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:52,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:38:18,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:38:18,063 INFO L272 AbstractInterpreter]: Visited 119 different actions 467 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-11 22:38:18,068 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:38:21,241 INFO L232 lantSequenceWeakener]: Weakened 267 states. On average, predicates are now at 78.32% of their original sizes. [2018-09-11 22:38:21,241 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:38:27,913 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:38:27,914 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:38:27,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-09-11 22:38:27,915 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:38:27,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-11 22:38:27,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-11 22:38:27,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-09-11 22:38:27,916 INFO L87 Difference]: Start difference. First operand 1358 states and 1604 transitions. Second operand 18 states. [2018-09-11 22:38:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:38:54,947 INFO L93 Difference]: Finished difference Result 3312 states and 4613 transitions. [2018-09-11 22:38:54,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-11 22:38:54,948 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 269 [2018-09-11 22:38:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:38:54,960 INFO L225 Difference]: With dead ends: 3312 [2018-09-11 22:38:54,961 INFO L226 Difference]: Without dead ends: 2328 [2018-09-11 22:38:54,966 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 292 GetRequests, 183 SyntacticMatches, 69 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=374, Invalid=1348, Unknown=0, NotChecked=0, Total=1722 [2018-09-11 22:38:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2018-09-11 22:38:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2132. [2018-09-11 22:38:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2018-09-11 22:38:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2472 transitions. [2018-09-11 22:38:55,050 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2472 transitions. Word has length 269 [2018-09-11 22:38:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:38:55,051 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2472 transitions. [2018-09-11 22:38:55,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-11 22:38:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2472 transitions. [2018-09-11 22:38:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-11 22:38:55,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:38:55,059 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:38:55,059 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:38:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1366036406, now seen corresponding path program 1 times [2018-09-11 22:38:55,059 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:38:55,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-09-11 22:38:55,060 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [483], [485], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:38:55,067 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:38:55,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown