java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:14:19,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:14:19,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:14:19,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:14:19,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:14:19,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:14:19,861 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:14:19,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:14:19,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:14:19,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:14:19,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:14:19,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:14:19,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:14:19,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:14:19,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:14:19,870 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:14:19,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:14:19,873 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:14:19,875 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:14:19,876 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:14:19,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:14:19,878 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:14:19,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:14:19,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:14:19,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:14:19,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:14:19,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:14:19,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:14:19,885 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:14:19,886 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:14:19,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:14:19,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:14:19,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:14:19,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:14:19,888 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:14:19,889 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:14:19,889 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:14:19,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:14:19,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:14:19,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:14:19,907 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:14:19,908 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:14:19,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:14:19,908 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:14:19,908 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:14:19,908 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:14:19,909 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:14:19,909 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:14:19,909 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:14:19,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:14:19,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:14:19,910 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:14:19,910 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:14:19,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:14:19,911 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:14:19,911 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:14:19,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:14:19,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:14:19,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:14:19,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:14:19,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:14:19,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:14:19,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:14:19,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:14:19,913 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:14:19,914 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:14:19,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:14:19,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:14:19,915 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:14:19,915 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:14:19,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:14:20,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:14:20,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:14:20,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:14:20,016 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:14:20,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-07-24 14:14:20,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025f2b650/ee1f51ad2f894996babe85ca17b73ac9/FLAG0ae554b16 [2018-07-24 14:14:20,869 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:14:20,870 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-07-24 14:14:20,908 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025f2b650/ee1f51ad2f894996babe85ca17b73ac9/FLAG0ae554b16 [2018-07-24 14:14:20,926 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025f2b650/ee1f51ad2f894996babe85ca17b73ac9 [2018-07-24 14:14:20,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:14:20,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:14:20,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:14:20,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:14:20,951 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:14:20,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:14:20" (1/1) ... [2018-07-24 14:14:20,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197b6f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:20, skipping insertion in model container [2018-07-24 14:14:20,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:14:20" (1/1) ... [2018-07-24 14:14:21,294 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:14:22,288 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:14:22,308 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:14:23,373 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:14:23,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23 WrapperNode [2018-07-24 14:14:23,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:14:23,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:14:23,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:14:23,617 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:14:23,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:23,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:23,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:14:23,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:14:23,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:14:23,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:14:24,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:24,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... [2018-07-24 14:14:25,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:14:25,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:14:25,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:14:25,022 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:14:25,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:14:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:14:25,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:14:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:14:25,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:14:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:14:25,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:14:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:14:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:14:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:14:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:14:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:14:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:14:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:14:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:14:36,123 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:14:36,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:14:36 BoogieIcfgContainer [2018-07-24 14:14:36,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:14:36,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:14:36,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:14:36,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:14:36,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:14:20" (1/3) ... [2018-07-24 14:14:36,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74767e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:14:36, skipping insertion in model container [2018-07-24 14:14:36,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:14:23" (2/3) ... [2018-07-24 14:14:36,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74767e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:14:36, skipping insertion in model container [2018-07-24 14:14:36,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:14:36" (3/3) ... [2018-07-24 14:14:36,143 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-07-24 14:14:36,156 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:14:36,166 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:14:36,232 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:14:36,233 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:14:36,233 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:14:36,233 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:14:36,233 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:14:36,234 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:14:36,234 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:14:36,234 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:14:36,234 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:14:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:14:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-24 14:14:36,288 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:36,289 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:36,290 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1399102452, now seen corresponding path program 1 times [2018-07-24 14:14:36,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:36,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:36,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:36,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:36,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:36,742 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:14:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:36,864 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:14:36,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:14:36,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:36,871 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:14:36,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:14:36,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:14:36,891 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:14:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:45,289 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:14:45,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:14:45,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-07-24 14:14:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:45,352 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:14:45,353 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:14:45,370 INFO L573 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 [2018-07-24 14:14:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:14:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:14:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:14:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-07-24 14:14:45,594 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-07-24 14:14:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:45,595 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-07-24 14:14:45,595 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:14:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-07-24 14:14:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-24 14:14:45,606 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:45,607 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:45,607 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1572758482, now seen corresponding path program 1 times [2018-07-24 14:14:45,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:45,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:45,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:45,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:46,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:14:46,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:14:46,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:46,054 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:14:46,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:14:46,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:14:46,056 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-07-24 14:15:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:02,697 INFO L93 Difference]: Finished difference Result 4793 states and 8579 transitions. [2018-07-24 14:15:02,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:15:02,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-07-24 14:15:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:02,723 INFO L225 Difference]: With dead ends: 4793 [2018-07-24 14:15:02,724 INFO L226 Difference]: Without dead ends: 3195 [2018-07-24 14:15:02,731 INFO L573 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 [2018-07-24 14:15:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-07-24 14:15:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2018-07-24 14:15:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2018-07-24 14:15:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4866 transitions. [2018-07-24 14:15:02,847 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4866 transitions. Word has length 114 [2018-07-24 14:15:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:02,848 INFO L471 AbstractCegarLoop]: Abstraction has 3176 states and 4866 transitions. [2018-07-24 14:15:02,848 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:15:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4866 transitions. [2018-07-24 14:15:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 14:15:02,855 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:02,856 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:02,856 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1601416815, now seen corresponding path program 1 times [2018-07-24 14:15:02,859 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:02,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:02,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:02,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:02,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:03,164 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:15:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:15:03,240 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:03,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:15:03,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:03,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:15:03,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:15:03,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:15:03,242 INFO L87 Difference]: Start difference. First operand 3176 states and 4866 transitions. Second operand 6 states. [2018-07-24 14:15:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:19,308 INFO L93 Difference]: Finished difference Result 11176 states and 17452 transitions. [2018-07-24 14:15:19,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:15:19,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-07-24 14:15:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:19,357 INFO L225 Difference]: With dead ends: 11176 [2018-07-24 14:15:19,358 INFO L226 Difference]: Without dead ends: 8006 [2018-07-24 14:15:19,375 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:15:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8006 states. [2018-07-24 14:15:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8006 to 7933. [2018-07-24 14:15:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7933 states. [2018-07-24 14:15:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7933 states to 7933 states and 11790 transitions. [2018-07-24 14:15:19,595 INFO L78 Accepts]: Start accepts. Automaton has 7933 states and 11790 transitions. Word has length 119 [2018-07-24 14:15:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:19,596 INFO L471 AbstractCegarLoop]: Abstraction has 7933 states and 11790 transitions. [2018-07-24 14:15:19,596 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:15:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7933 states and 11790 transitions. [2018-07-24 14:15:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-24 14:15:19,599 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:19,599 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:19,599 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1773790607, now seen corresponding path program 1 times [2018-07-24 14:15:19,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:19,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:19,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:19,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:19,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:15:19,949 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:19,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:15:19,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:19,950 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:15:19,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:15:19,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:15:19,951 INFO L87 Difference]: Start difference. First operand 7933 states and 11790 transitions. Second operand 5 states. [2018-07-24 14:15:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:28,689 INFO L93 Difference]: Finished difference Result 24418 states and 37210 transitions. [2018-07-24 14:15:28,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:15:28,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-07-24 14:15:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:28,787 INFO L225 Difference]: With dead ends: 24418 [2018-07-24 14:15:28,787 INFO L226 Difference]: Without dead ends: 16491 [2018-07-24 14:15:28,814 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:15:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16491 states. [2018-07-24 14:15:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16491 to 16262. [2018-07-24 14:15:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16262 states. [2018-07-24 14:15:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 22930 transitions. [2018-07-24 14:15:29,250 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 22930 transitions. Word has length 135 [2018-07-24 14:15:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:29,251 INFO L471 AbstractCegarLoop]: Abstraction has 16262 states and 22930 transitions. [2018-07-24 14:15:29,251 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:15:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 22930 transitions. [2018-07-24 14:15:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-24 14:15:29,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:29,259 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:29,259 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash 708226614, now seen corresponding path program 1 times [2018-07-24 14:15:29,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:29,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:29,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:29,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:29,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:15:29,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:29,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:15:29,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:29,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:15:29,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:15:29,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:15:29,621 INFO L87 Difference]: Start difference. First operand 16262 states and 22930 transitions. Second operand 5 states. [2018-07-24 14:15:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:50,054 INFO L93 Difference]: Finished difference Result 59065 states and 87194 transitions. [2018-07-24 14:15:50,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:15:50,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-07-24 14:15:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:50,227 INFO L225 Difference]: With dead ends: 59065 [2018-07-24 14:15:50,228 INFO L226 Difference]: Without dead ends: 42809 [2018-07-24 14:15:50,309 INFO L573 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 [2018-07-24 14:15:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42809 states. [2018-07-24 14:15:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42809 to 42298. [2018-07-24 14:15:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42298 states. [2018-07-24 14:15:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42298 states to 42298 states and 56691 transitions. [2018-07-24 14:15:51,490 INFO L78 Accepts]: Start accepts. Automaton has 42298 states and 56691 transitions. Word has length 144 [2018-07-24 14:15:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:51,491 INFO L471 AbstractCegarLoop]: Abstraction has 42298 states and 56691 transitions. [2018-07-24 14:15:51,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:15:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 42298 states and 56691 transitions. [2018-07-24 14:15:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-24 14:15:51,498 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:51,498 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:15:51,499 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:51,499 INFO L82 PathProgramCache]: Analyzing trace with hash 233799721, now seen corresponding path program 1 times [2018-07-24 14:15:51,499 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:51,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:51,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:51,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:51,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:51,786 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:15:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:15:52,213 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:15:52,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:15:52,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:52,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:15:52,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:15:52,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:15:52,215 INFO L87 Difference]: Start difference. First operand 42298 states and 56691 transitions. Second operand 6 states. [2018-07-24 14:16:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:04,556 INFO L93 Difference]: Finished difference Result 110138 states and 155444 transitions. [2018-07-24 14:16:04,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:16:04,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-07-24 14:16:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:04,796 INFO L225 Difference]: With dead ends: 110138 [2018-07-24 14:16:04,797 INFO L226 Difference]: Without dead ends: 67846 [2018-07-24 14:16:04,917 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:16:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67846 states. [2018-07-24 14:16:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67846 to 67457. [2018-07-24 14:16:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67457 states. [2018-07-24 14:16:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67457 states to 67457 states and 90911 transitions. [2018-07-24 14:16:06,235 INFO L78 Accepts]: Start accepts. Automaton has 67457 states and 90911 transitions. Word has length 203 [2018-07-24 14:16:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:06,237 INFO L471 AbstractCegarLoop]: Abstraction has 67457 states and 90911 transitions. [2018-07-24 14:16:06,238 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:16:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 67457 states and 90911 transitions. [2018-07-24 14:16:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-24 14:16:06,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:06,247 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:16:06,247 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:16:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1869125427, now seen corresponding path program 1 times [2018-07-24 14:16:06,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:06,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:06,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:06,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:06,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:07,397 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:16:07,398 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:16:07,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:07,413 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:16:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:07,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:16:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:07,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:16:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:08,156 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:16:08,156 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:16:08,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:08,187 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:16:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:08,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:16:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:08,589 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:16:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:09,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:16:09,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:16:09,439 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:16:09,441 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:16:09,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:16:09,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:16:09,441 INFO L87 Difference]: Start difference. First operand 67457 states and 90911 transitions. Second operand 9 states. [2018-07-24 14:16:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:31,591 INFO L93 Difference]: Finished difference Result 240658 states and 434634 transitions. [2018-07-24 14:16:31,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:16:31,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2018-07-24 14:16:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:32,722 INFO L225 Difference]: With dead ends: 240658 [2018-07-24 14:16:32,722 INFO L226 Difference]: Without dead ends: 140725 [2018-07-24 14:16:33,255 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 964 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:16:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140725 states. [2018-07-24 14:16:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140725 to 138794. [2018-07-24 14:16:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138794 states. [2018-07-24 14:16:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138794 states to 138794 states and 195201 transitions. [2018-07-24 14:16:38,073 INFO L78 Accepts]: Start accepts. Automaton has 138794 states and 195201 transitions. Word has length 241 [2018-07-24 14:16:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:38,074 INFO L471 AbstractCegarLoop]: Abstraction has 138794 states and 195201 transitions. [2018-07-24 14:16:38,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:16:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 138794 states and 195201 transitions. [2018-07-24 14:16:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-24 14:16:38,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:38,091 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:16:38,091 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:16:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1501309236, now seen corresponding path program 1 times [2018-07-24 14:16:38,091 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:38,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:38,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:38,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 14:16:38,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:16:38,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:16:38,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:16:38,438 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:16:38,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:16:38,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:16:38,439 INFO L87 Difference]: Start difference. First operand 138794 states and 195201 transitions. Second operand 4 states. [2018-07-24 14:16:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:16:53,298 INFO L93 Difference]: Finished difference Result 276022 states and 392867 transitions. [2018-07-24 14:16:53,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:16:53,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-07-24 14:16:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:16:53,856 INFO L225 Difference]: With dead ends: 276022 [2018-07-24 14:16:53,856 INFO L226 Difference]: Without dead ends: 137254 [2018-07-24 14:16:54,120 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:16:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137254 states. [2018-07-24 14:16:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137254 to 137254. [2018-07-24 14:16:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137254 states. [2018-07-24 14:16:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137254 states to 137254 states and 187924 transitions. [2018-07-24 14:16:57,492 INFO L78 Accepts]: Start accepts. Automaton has 137254 states and 187924 transitions. Word has length 306 [2018-07-24 14:16:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:16:57,493 INFO L471 AbstractCegarLoop]: Abstraction has 137254 states and 187924 transitions. [2018-07-24 14:16:57,493 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:16:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 137254 states and 187924 transitions. [2018-07-24 14:16:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-24 14:16:57,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:16:57,532 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:16:57,532 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:16:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2090640306, now seen corresponding path program 1 times [2018-07-24 14:16:57,532 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:16:57,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:57,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:57,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:16:57,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:16:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 265 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:16:58,428 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:16:58,428 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:16:58,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:16:58,436 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:16:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:16:58,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:16:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 14:16:58,816 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:16:59,055 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:17:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 14:17:00,470 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:17:00,470 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:17:00,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:17:00,487 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:17:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:17:00,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:17:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 14:17:00,966 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:17:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 14:17:01,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:17:01,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-07-24 14:17:01,126 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:17:01,127 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:17:01,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:17:01,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:17:01,128 INFO L87 Difference]: Start difference. First operand 137254 states and 187924 transitions. Second operand 16 states. [2018-07-24 14:17:27,037 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-07-24 14:17:28,703 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-07-24 14:17:33,668 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-07-24 14:17:42,307 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-07-24 14:17:57,806 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 Received shutdown request... [2018-07-24 14:18:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-24 14:18:12,876 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:18:12,883 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:18:12,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:18:12 BoogieIcfgContainer [2018-07-24 14:18:12,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:18:12,884 INFO L168 Benchmark]: Toolchain (without parser) took 231945.12 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,885 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:18:12,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2673.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 246.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,887 INFO L168 Benchmark]: Boogie Preprocessor took 1158.77 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 955.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,888 INFO L168 Benchmark]: RCFGBuilder took 11102.38 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 151.0 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -151.2 MB). Peak memory consumption was 748.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,889 INFO L168 Benchmark]: TraceAbstraction took 216758.39 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.1 GB in the end (delta: -563.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:18:12,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2673.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 246.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1158.77 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 955.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11102.38 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 151.0 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -151.2 MB). Peak memory consumption was 748.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216758.39 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.1 GB in the end (delta: -563.1 MB). Peak memory consumption was 1.3 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 interpolant automaton (currently 102 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (162275 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 216.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 194.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2490 SDtfs, 49600 SDslu, 2905 SDs, 0 SdLazy, 93921 SolverSat, 18611 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 155.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2678 GetRequests, 2499 SyntacticMatches, 11 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4683 ImplicationChecksByTransitivity, 10.1s 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: 11.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 3152 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.0s 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-0-2018-07-24_14-18-12-909.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-0-2018-07-24_14-18-12-909.csv Completed graceful shutdown