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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:12:26,720 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:12:26,723 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:12:26,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:12:26,738 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:12:26,739 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:12:26,740 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:12:26,742 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:12:26,744 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:12:26,745 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:12:26,745 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:12:26,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:12:26,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:12:26,748 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:12:26,749 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:12:26,750 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:12:26,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:12:26,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:12:26,755 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:12:26,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:12:26,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:12:26,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:12:26,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 23:12:26,762 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 23:12:26,762 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 23:12:26,763 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 23:12:26,764 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 23:12:26,765 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 23:12:26,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 23:12:26,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 23:12:26,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 23:12:26,768 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 23:12:26,768 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 23:12:26,768 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 23:12:26,770 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 23:12:26,770 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 23:12:26,771 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 23:12:26,787 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:12:26,787 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:12:26,788 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:12:26,788 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 23:12:26,788 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 23:12:26,788 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 23:12:26,789 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 23:12:26,789 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 23:12:26,789 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 23:12:26,789 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 23:12:26,789 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 23:12:26,791 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:12:26,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:12:26,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:12:26,791 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:12:26,792 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:12:26,792 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:12:26,792 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:12:26,792 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:12:26,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:12:26,793 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:12:26,793 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:12:26,793 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:12:26,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:12:26,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:12:26,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:12:26,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:12:26,795 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 23:12:26,795 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:12:26,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:12:26,796 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:12:26,796 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:12:26,796 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 23:12:26,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:12:26,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:12:26,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:12:26,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:12:26,903 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:12:26,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-07-23 23:12:27,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71ca390a/d5977217d96f436c8c1681db7045c485/FLAGf225a758d [2018-07-23 23:12:27,756 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:12:27,758 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-07-23 23:12:27,788 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71ca390a/d5977217d96f436c8c1681db7045c485/FLAGf225a758d [2018-07-23 23:12:27,809 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71ca390a/d5977217d96f436c8c1681db7045c485 [2018-07-23 23:12:27,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:12:27,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:12:27,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:12:27,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:12:27,840 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:12:27,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:12:27" (1/1) ... [2018-07-23 23:12:27,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536648b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:27, skipping insertion in model container [2018-07-23 23:12:27,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:12:27" (1/1) ... [2018-07-23 23:12:28,184 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:12:29,009 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:12:29,026 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:12:29,514 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:12:29,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29 WrapperNode [2018-07-23 23:12:29,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:12:29,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:12:29,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:12:29,709 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:12:29,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:29,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:29,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:12:29,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:12:29,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:12:29,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:12:30,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (1/1) ... [2018-07-23 23:12:30,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:12:30,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:12:30,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:12:30,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:12:30,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (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 [2018-07-23 23:12:30,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 23:12:30,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 23:12:30,752 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 [2018-07-23 23:12:30,753 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 [2018-07-23 23:12:30,753 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 [2018-07-23 23:12:30,753 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 [2018-07-23 23:12:30,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:12:30,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:12:30,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 23:12:30,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 23:12:30,754 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 [2018-07-23 23:12:30,754 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 [2018-07-23 23:12:39,218 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:12:39,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:12:39 BoogieIcfgContainer [2018-07-23 23:12:39,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:12:39,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:12:39,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:12:39,227 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:12:39,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:12:27" (1/3) ... [2018-07-23 23:12:39,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69664129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:12:39, skipping insertion in model container [2018-07-23 23:12:39,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:12:29" (2/3) ... [2018-07-23 23:12:39,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69664129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:12:39, skipping insertion in model container [2018-07-23 23:12:39,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:12:39" (3/3) ... [2018-07-23 23:12:39,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label48_true-unreach-call.c [2018-07-23 23:12:39,243 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:12:39,253 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:12:39,323 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:12:39,324 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:12:39,324 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:12:39,324 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:12:39,324 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:12:39,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:12:39,325 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:12:39,325 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:12:39,325 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:12:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-23 23:12:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-23 23:12:39,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:12:39,381 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:12:39,382 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]=== [2018-07-23 23:12:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash 18499881, now seen corresponding path program 1 times [2018-07-23 23:12:39,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:12:39,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:39,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:12:39,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:39,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:12:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:12:39,871 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 23:12:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:12:39,961 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:12:39,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:12:39,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:12:39,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:12:39,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:12:39,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:12:39,989 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-23 23:12:47,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:12:47,097 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-23 23:12:47,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:12:47,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-07-23 23:12:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:12:47,139 INFO L225 Difference]: With dead ends: 2251 [2018-07-23 23:12:47,139 INFO L226 Difference]: Without dead ends: 1474 [2018-07-23 23:12:47,153 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 [2018-07-23 23:12:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-23 23:12:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-23 23:12:47,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-23 23:12:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-23 23:12:47,312 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 61 [2018-07-23 23:12:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:12:47,314 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-23 23:12:47,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:12:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-23 23:12:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 23:12:47,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:12:47,329 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:12:47,329 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]=== [2018-07-23 23:12:47,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1271347417, now seen corresponding path program 1 times [2018-07-23 23:12:47,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:12:47,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:47,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:12:47,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:47,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:12:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:12:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:12:47,744 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:12:47,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 23:12:47,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:12:47,747 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:12:47,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:12:47,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:12:47,748 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-23 23:12:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:12:57,370 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-07-23 23:12:57,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:12:57,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-07-23 23:12:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:12:57,394 INFO L225 Difference]: With dead ends: 4419 [2018-07-23 23:12:57,394 INFO L226 Difference]: Without dead ends: 2951 [2018-07-23 23:12:57,400 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 [2018-07-23 23:12:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-23 23:12:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-07-23 23:12:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-07-23 23:12:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-07-23 23:12:57,529 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 150 [2018-07-23 23:12:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:12:57,530 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-07-23 23:12:57,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:12:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-07-23 23:12:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-23 23:12:57,542 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:12:57,543 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:12:57,543 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]=== [2018-07-23 23:12:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash 65643198, now seen corresponding path program 1 times [2018-07-23 23:12:57,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:12:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:57,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:12:57,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:12:57,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:12:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:12:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:12:57,952 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:12:57,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 23:12:57,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:12:57,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:12:57,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:12:57,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:12:57,954 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-07-23 23:13:08,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:13:08,456 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-07-23 23:13:08,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:13:08,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-07-23 23:13:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:13:08,512 INFO L225 Difference]: With dead ends: 10194 [2018-07-23 23:13:08,512 INFO L226 Difference]: Without dead ends: 7272 [2018-07-23 23:13:08,532 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 [2018-07-23 23:13:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-07-23 23:13:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-07-23 23:13:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-07-23 23:13:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-07-23 23:13:08,813 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 197 [2018-07-23 23:13:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:13:08,814 INFO L471 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-07-23 23:13:08,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:13:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-07-23 23:13:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-23 23:13:08,821 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:13:08,821 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:13:08,821 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]=== [2018-07-23 23:13:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash 156763426, now seen corresponding path program 1 times [2018-07-23 23:13:08,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:13:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:13:08,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:13:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:13:08,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:13:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:13:09,740 WARN L169 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-07-23 23:13:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:13:09,969 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:13:09,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-07-23 23:13:09,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:13:09,970 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 23:13:09,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 23:13:09,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-23 23:13:09,971 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 9 states. [2018-07-23 23:13:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:13:20,015 INFO L93 Difference]: Finished difference Result 17369 states and 29099 transitions. [2018-07-23 23:13:20,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 23:13:20,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 199 [2018-07-23 23:13:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:13:20,077 INFO L225 Difference]: With dead ends: 17369 [2018-07-23 23:13:20,077 INFO L226 Difference]: Without dead ends: 10167 [2018-07-23 23:13:20,237 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-07-23 23:13:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10167 states. [2018-07-23 23:13:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10167 to 10087. [2018-07-23 23:13:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10087 states. [2018-07-23 23:13:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10087 states to 10087 states and 15380 transitions. [2018-07-23 23:13:20,486 INFO L78 Accepts]: Start accepts. Automaton has 10087 states and 15380 transitions. Word has length 199 [2018-07-23 23:13:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:13:20,487 INFO L471 AbstractCegarLoop]: Abstraction has 10087 states and 15380 transitions. [2018-07-23 23:13:20,487 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 23:13:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 10087 states and 15380 transitions. [2018-07-23 23:13:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-23 23:13:20,496 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:13:20,497 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-23 23:13:20,497 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]=== [2018-07-23 23:13:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1964682231, now seen corresponding path program 1 times [2018-07-23 23:13:20,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:13:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:13:20,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:13:20,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:13:20,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:13:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:13:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 23:13:20,973 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:13:20,973 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 23:13:20,974 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-07-23 23:13:20,977 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [766], [1374], [2116], [2120], [2126], [2130], [2132], [3023], [3024], [3025], [3027], [3028] [2018-07-23 23:13:21,053 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 23:13:21,053 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 23:13:30,506 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 23:13:30,509 INFO L272 AbstractInterpreter]: Visited 143 different actions 143 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 23:13:30,560 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 23:13:36,017 INFO L232 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 78.09% of their original sizes. [2018-07-23 23:13:36,018 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 23:13:36,381 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 23:13:36,383 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:13:36,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 23:13:36,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:13:36,384 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 23:13:36,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 23:13:36,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 23:13:36,385 INFO L87 Difference]: Start difference. First operand 10087 states and 15380 transitions. Second operand 7 states. [2018-07-23 23:14:00,774 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 23:15:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:15:35,934 INFO L93 Difference]: Finished difference Result 20873 states and 31604 transitions. [2018-07-23 23:15:35,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:15:35,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2018-07-23 23:15:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:15:35,972 INFO L225 Difference]: With dead ends: 20873 [2018-07-23 23:15:35,972 INFO L226 Difference]: Without dead ends: 10792 [2018-07-23 23:15:35,998 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 23:15:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10792 states. [2018-07-23 23:15:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10792 to 10790. [2018-07-23 23:15:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10790 states. [2018-07-23 23:15:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10790 states to 10790 states and 16092 transitions. [2018-07-23 23:15:36,242 INFO L78 Accepts]: Start accepts. Automaton has 10790 states and 16092 transitions. Word has length 271 [2018-07-23 23:15:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:15:36,243 INFO L471 AbstractCegarLoop]: Abstraction has 10790 states and 16092 transitions. [2018-07-23 23:15:36,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 23:15:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 10790 states and 16092 transitions. [2018-07-23 23:15:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-23 23:15:36,258 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:15:36,259 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:15:36,259 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]=== [2018-07-23 23:15:36,259 INFO L82 PathProgramCache]: Analyzing trace with hash 353506699, now seen corresponding path program 1 times [2018-07-23 23:15:36,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:15:36,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:15:36,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:15:36,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:15:36,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:15:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:15:36,790 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 23:15:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 221 proven. 218 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 23:15:37,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:15:37,277 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 23:15:37,277 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-07-23 23:15:37,278 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [766], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [935], [939], [943], [947], [951], [955], [959], [962], [1374], [2116], [2120], [2126], [2130], [2132], [3023], [3024], [3025], [3027], [3028] [2018-07-23 23:15:37,289 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 23:15:37,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 23:16:04,842 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 23:16:04,842 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 23:16:04,851 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown