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_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:12:42,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:12:42,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:12:42,623 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:12:42,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:12:42,625 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:12:42,627 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:12:42,629 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:12:42,631 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:12:42,632 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:12:42,633 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:12:42,634 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:12:42,635 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:12:42,636 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:12:42,637 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:12:42,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:12:42,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:12:42,645 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:12:42,647 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:12:42,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:12:42,653 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:12:42,654 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:12:42,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:12:42,657 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:12:42,657 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:12:42,658 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:12:42,659 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:12:42,659 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:12:42,662 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:12:42,663 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:12:42,663 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:12:42,664 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:12:42,664 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:12:42,666 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:12:42,667 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:12:42,668 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:12:42,668 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 14:12:42,697 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:12:42,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:12:42,699 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:12:42,699 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:12:42,700 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:12:42,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:12:42,700 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:12:42,700 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:12:42,700 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:12:42,701 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:12:42,701 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:12:42,702 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:12:42,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:12:42,702 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:12:42,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:12:42,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:12:42,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:12:42,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:12:42,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:12:42,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:12:42,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:12:42,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:12:42,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:12:42,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:12:42,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:12:42,707 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:12:42,707 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:12:42,707 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:12:42,707 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:12:42,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:12:42,708 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:12:42,708 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:12:42,708 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:12:42,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:12:42,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:12:42,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:12:42,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:12:42,782 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:12:42,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-07-24 14:12:43,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fabe0c11/2096c01d32b94dba88e44fd3f4f8032f/FLAG23028961c [2018-07-24 14:12:43,560 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:12:43,561 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-07-24 14:12:43,603 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fabe0c11/2096c01d32b94dba88e44fd3f4f8032f/FLAG23028961c [2018-07-24 14:12:43,624 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fabe0c11/2096c01d32b94dba88e44fd3f4f8032f [2018-07-24 14:12:43,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:12:43,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:12:43,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:12:43,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:12:43,652 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:12:43,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:12:43" (1/1) ... [2018-07-24 14:12:43,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:43, skipping insertion in model container [2018-07-24 14:12:43,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:12:43" (1/1) ... [2018-07-24 14:12:44,011 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:12:44,981 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:12:44,999 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:12:45,927 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:12:46,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46 WrapperNode [2018-07-24 14:12:46,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:12:46,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:12:46,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:12:46,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:12:46,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:46,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:46,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:12:46,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:12:46,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:12:46,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:12:47,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (1/1) ... [2018-07-24 14:12:47,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:12:47,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:12:47,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:12:47,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:12:47,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (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 14:12:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:12:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:12:47,438 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 14:12:47,438 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 14:12:47,438 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 14:12:47,439 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 14:12:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:12:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:12:47,439 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 14:12:47,439 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 14:12:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:12:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:12:47,440 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 14:12:47,440 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 14:13:00,870 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:13:00,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:13:00 BoogieIcfgContainer [2018-07-24 14:13:00,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:13:00,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:13:00,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:13:00,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:13:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:12:43" (1/3) ... [2018-07-24 14:13:00,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b273ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:13:00, skipping insertion in model container [2018-07-24 14:13:00,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:46" (2/3) ... [2018-07-24 14:13:00,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b273ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:13:00, skipping insertion in model container [2018-07-24 14:13:00,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:13:00" (3/3) ... [2018-07-24 14:13:00,883 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46_true-unreach-call.c [2018-07-24 14:13:00,892 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:13:00,901 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:13:00,961 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:13:00,962 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:13:00,962 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:13:00,962 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:13:00,962 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:13:00,963 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:13:00,963 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:13:00,963 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:13:00,963 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:13:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:13:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-24 14:13:01,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:01,022 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, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:01,023 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 14:13:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1973084988, now seen corresponding path program 1 times [2018-07-24 14:13:01,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:01,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:01,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:01,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:01,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:01,619 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 14:13:01,621 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:01,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:13:01,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:01,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:13:01,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:13:01,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:13:01,647 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:13:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:10,368 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:13:10,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:13:10,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-07-24 14:13:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:10,406 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:13:10,407 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:13:10,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:13:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:13:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:13:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:13:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-07-24 14:13:10,586 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 68 [2018-07-24 14:13:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:10,587 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-07-24 14:13:10,587 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:13:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-07-24 14:13:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-24 14:13:10,601 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:10,602 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, 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] [2018-07-24 14:13:10,602 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 14:13:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1293744738, now seen corresponding path program 1 times [2018-07-24 14:13:10,605 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:10,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:10,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:10,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:10,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:13:11,113 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:11,113 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 14:13:11,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:11,128 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:11,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:11,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:11,691 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:13:11,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-07-24 14:13:11,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:11,692 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:13:11,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:13:11,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:13:11,693 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 3 states. [2018-07-24 14:13:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:23,443 INFO L93 Difference]: Finished difference Result 4738 states and 8562 transitions. [2018-07-24 14:13:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:13:23,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-07-24 14:13:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:23,473 INFO L225 Difference]: With dead ends: 4738 [2018-07-24 14:13:23,473 INFO L226 Difference]: Without dead ends: 3140 [2018-07-24 14:13:23,482 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:13:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-07-24 14:13:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2018-07-24 14:13:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2018-07-24 14:13:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5269 transitions. [2018-07-24 14:13:23,595 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5269 transitions. Word has length 144 [2018-07-24 14:13:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:23,596 INFO L471 AbstractCegarLoop]: Abstraction has 3140 states and 5269 transitions. [2018-07-24 14:13:23,596 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:13:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5269 transitions. [2018-07-24 14:13:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-24 14:13:23,603 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:23,603 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:23,604 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 14:13:23,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1167159210, now seen corresponding path program 1 times [2018-07-24 14:13:23,604 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:23,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:23,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:23,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:23,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:23,811 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:23,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:13:23,811 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:23,812 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:23,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:23,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:13:23,813 INFO L87 Difference]: Start difference. First operand 3140 states and 5269 transitions. Second operand 5 states. [2018-07-24 14:13:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:35,463 INFO L93 Difference]: Finished difference Result 9545 states and 16221 transitions. [2018-07-24 14:13:35,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:13:35,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-07-24 14:13:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:35,513 INFO L225 Difference]: With dead ends: 9545 [2018-07-24 14:13:35,514 INFO L226 Difference]: Without dead ends: 6411 [2018-07-24 14:13:35,527 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:13:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2018-07-24 14:13:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6350. [2018-07-24 14:13:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6350 states. [2018-07-24 14:13:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 9814 transitions. [2018-07-24 14:13:35,751 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 9814 transitions. Word has length 148 [2018-07-24 14:13:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:35,752 INFO L471 AbstractCegarLoop]: Abstraction has 6350 states and 9814 transitions. [2018-07-24 14:13:35,752 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 9814 transitions. [2018-07-24 14:13:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-24 14:13:35,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:35,757 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, 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] [2018-07-24 14:13:35,757 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 14:13:35,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1558508457, now seen corresponding path program 1 times [2018-07-24 14:13:35,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:35,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:35,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:35,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:35,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:36,067 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:36,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:13:36,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:36,068 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:36,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:36,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:13:36,069 INFO L87 Difference]: Start difference. First operand 6350 states and 9814 transitions. Second operand 5 states. [2018-07-24 14:13:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:59,409 INFO L93 Difference]: Finished difference Result 25286 states and 40885 transitions. [2018-07-24 14:13:59,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:13:59,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-07-24 14:13:59,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:59,519 INFO L225 Difference]: With dead ends: 25286 [2018-07-24 14:13:59,520 INFO L226 Difference]: Without dead ends: 18942 [2018-07-24 14:13:59,571 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 14:13:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2018-07-24 14:14:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18876. [2018-07-24 14:14:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18876 states. [2018-07-24 14:14:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18876 states to 18876 states and 27660 transitions. [2018-07-24 14:14:00,225 INFO L78 Accepts]: Start accepts. Automaton has 18876 states and 27660 transitions. Word has length 159 [2018-07-24 14:14:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:00,226 INFO L471 AbstractCegarLoop]: Abstraction has 18876 states and 27660 transitions. [2018-07-24 14:14:00,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:14:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18876 states and 27660 transitions. [2018-07-24 14:14:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-24 14:14:00,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:00,232 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:00,233 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 14:14:00,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1131052914, now seen corresponding path program 1 times [2018-07-24 14:14:00,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:00,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:00,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:00,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:00,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:00,490 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:14:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:00,894 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:14:00,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:14:00,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:00,895 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:14:00,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:14:00,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:14:00,896 INFO L87 Difference]: Start difference. First operand 18876 states and 27660 transitions. Second operand 6 states. [2018-07-24 14:14:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:10,248 INFO L93 Difference]: Finished difference Result 49385 states and 75902 transitions. [2018-07-24 14:14:10,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:14:10,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-07-24 14:14:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:10,392 INFO L225 Difference]: With dead ends: 49385 [2018-07-24 14:14:10,392 INFO L226 Difference]: Without dead ends: 30515 [2018-07-24 14:14:10,445 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 14:14:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2018-07-24 14:14:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 30316. [2018-07-24 14:14:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30316 states. [2018-07-24 14:14:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30316 states to 30316 states and 43993 transitions. [2018-07-24 14:14:11,174 INFO L78 Accepts]: Start accepts. Automaton has 30316 states and 43993 transitions. Word has length 182 [2018-07-24 14:14:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:11,174 INFO L471 AbstractCegarLoop]: Abstraction has 30316 states and 43993 transitions. [2018-07-24 14:14:11,174 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:14:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30316 states and 43993 transitions. [2018-07-24 14:14:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 14:14:11,181 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:11,181 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, 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] [2018-07-24 14:14:11,181 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 14:14:11,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1122871851, now seen corresponding path program 1 times [2018-07-24 14:14:11,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:11,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:11,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:11,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:11,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:14:11,429 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:14:11,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:14:11,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:11,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:14:11,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:14:11,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:14:11,431 INFO L87 Difference]: Start difference. First operand 30316 states and 43993 transitions. Second operand 4 states. [2018-07-24 14:14:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:22,183 INFO L93 Difference]: Finished difference Result 79065 states and 116505 transitions. [2018-07-24 14:14:22,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:14:22,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2018-07-24 14:14:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:22,367 INFO L225 Difference]: With dead ends: 79065 [2018-07-24 14:14:22,368 INFO L226 Difference]: Without dead ends: 48755 [2018-07-24 14:14:22,440 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 14:14:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48755 states. [2018-07-24 14:14:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48755 to 48742. [2018-07-24 14:14:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48742 states. [2018-07-24 14:14:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48742 states to 48742 states and 65091 transitions. [2018-07-24 14:14:23,258 INFO L78 Accepts]: Start accepts. Automaton has 48742 states and 65091 transitions. Word has length 217 [2018-07-24 14:14:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:23,258 INFO L471 AbstractCegarLoop]: Abstraction has 48742 states and 65091 transitions. [2018-07-24 14:14:23,258 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:14:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 48742 states and 65091 transitions. [2018-07-24 14:14:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-24 14:14:23,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:23,290 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:23,290 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 14:14:23,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1051367888, now seen corresponding path program 1 times [2018-07-24 14:14:23,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:23,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:23,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:23,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:23,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:23,629 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:14:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:14:24,133 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:24,133 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:24,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:24,147 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:24,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:14:24,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:14:24,980 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:14:24,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:14:24,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:24,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:14:24,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:14:24,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:14:24,981 INFO L87 Difference]: Start difference. First operand 48742 states and 65091 transitions. Second operand 5 states. [2018-07-24 14:14:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:39,087 INFO L93 Difference]: Finished difference Result 133019 states and 186186 transitions. [2018-07-24 14:14:39,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:14:39,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-07-24 14:14:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:39,363 INFO L225 Difference]: With dead ends: 133019 [2018-07-24 14:14:39,363 INFO L226 Difference]: Without dead ends: 84283 [2018-07-24 14:14:39,488 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 658 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:14:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84283 states. [2018-07-24 14:14:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84283 to 80273. [2018-07-24 14:14:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80273 states. [2018-07-24 14:14:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80273 states to 80273 states and 109653 transitions. [2018-07-24 14:14:41,087 INFO L78 Accepts]: Start accepts. Automaton has 80273 states and 109653 transitions. Word has length 332 [2018-07-24 14:14:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:41,088 INFO L471 AbstractCegarLoop]: Abstraction has 80273 states and 109653 transitions. [2018-07-24 14:14:41,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:14:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 80273 states and 109653 transitions. [2018-07-24 14:14:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-24 14:14:41,134 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:41,134 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:14:41,134 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 14:14:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1573491730, now seen corresponding path program 1 times [2018-07-24 14:14:41,135 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:41,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:41,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:41,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:41,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:14:41,539 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:41,539 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 14:14:41,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:41,549 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:41,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:14:41,813 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:14:42,252 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:42,252 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 14:14:42,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:42,269 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:42,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:14:43,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:14:43,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:43,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:14:43,380 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:43,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:14:43,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:14:43,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:14:43,381 INFO L87 Difference]: Start difference. First operand 80273 states and 109653 transitions. Second operand 9 states. [2018-07-24 14:14:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:57,736 INFO L93 Difference]: Finished difference Result 194408 states and 304859 transitions. [2018-07-24 14:14:57,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:14:57,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 358 [2018-07-24 14:14:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:58,327 INFO L225 Difference]: With dead ends: 194408 [2018-07-24 14:14:58,327 INFO L226 Difference]: Without dead ends: 96995 [2018-07-24 14:14:58,601 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1428 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:14:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96995 states. [2018-07-24 14:15:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96995 to 91982. [2018-07-24 14:15:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91982 states. [2018-07-24 14:15:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91982 states to 91982 states and 126591 transitions. [2018-07-24 14:15:00,819 INFO L78 Accepts]: Start accepts. Automaton has 91982 states and 126591 transitions. Word has length 358 [2018-07-24 14:15:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:00,819 INFO L471 AbstractCegarLoop]: Abstraction has 91982 states and 126591 transitions. [2018-07-24 14:15:00,819 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:15:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 91982 states and 126591 transitions. [2018-07-24 14:15:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-24 14:15:00,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:00,867 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:00,868 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 14:15:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash -175910452, now seen corresponding path program 1 times [2018-07-24 14:15:00,868 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:00,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:00,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:00,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:00,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:01,220 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:15:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:15:02,431 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:02,431 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:15:02,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:02,440 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:02,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:15:02,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:15:02,978 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:15:02,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:15:02,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:02,979 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:15:02,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:15:02,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:15:02,980 INFO L87 Difference]: Start difference. First operand 91982 states and 126591 transitions. Second operand 5 states. [2018-07-24 14:15:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:11,693 INFO L93 Difference]: Finished difference Result 183898 states and 254203 transitions. [2018-07-24 14:15:11,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:15:11,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2018-07-24 14:15:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:11,988 INFO L225 Difference]: With dead ends: 183898 [2018-07-24 14:15:11,989 INFO L226 Difference]: Without dead ends: 91922 [2018-07-24 14:15:12,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 750 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:15:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91922 states. [2018-07-24 14:15:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91922 to 88860. [2018-07-24 14:15:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88860 states. [2018-07-24 14:15:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88860 states to 88860 states and 111618 transitions. [2018-07-24 14:15:13,594 INFO L78 Accepts]: Start accepts. Automaton has 88860 states and 111618 transitions. Word has length 378 [2018-07-24 14:15:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:13,595 INFO L471 AbstractCegarLoop]: Abstraction has 88860 states and 111618 transitions. [2018-07-24 14:15:13,595 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:15:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 88860 states and 111618 transitions. [2018-07-24 14:15:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-24 14:15:13,619 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:13,620 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:15:13,620 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash 902169533, now seen corresponding path program 1 times [2018-07-24 14:15:13,621 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:13,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:13,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:13,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:13,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:15:13,977 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:13,977 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:15:13,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:13,984 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:14,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:15:14,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:15:15,285 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:15,285 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:15:15,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:15,301 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:15,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:15:15,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:15:15,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:15:15,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-07-24 14:15:15,979 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:15:15,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:15:15,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:15:15,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:15:15,981 INFO L87 Difference]: Start difference. First operand 88860 states and 111618 transitions. Second operand 9 states. [2018-07-24 14:15:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:33,846 INFO L93 Difference]: Finished difference Result 195219 states and 261379 transitions. [2018-07-24 14:15:33,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:15:33,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2018-07-24 14:15:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:34,304 INFO L225 Difference]: With dead ends: 195219 [2018-07-24 14:15:34,305 INFO L226 Difference]: Without dead ends: 106365 [2018-07-24 14:15:34,591 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1769 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-07-24 14:15:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106365 states. [2018-07-24 14:15:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106365 to 103599. [2018-07-24 14:15:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103599 states. [2018-07-24 14:15:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103599 states to 103599 states and 127948 transitions. [2018-07-24 14:15:36,897 INFO L78 Accepts]: Start accepts. Automaton has 103599 states and 127948 transitions. Word has length 443 [2018-07-24 14:15:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:36,897 INFO L471 AbstractCegarLoop]: Abstraction has 103599 states and 127948 transitions. [2018-07-24 14:15:36,897 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:15:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 103599 states and 127948 transitions. [2018-07-24 14:15:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-07-24 14:15:36,925 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:36,925 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 14:15:36,926 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:15:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2018930971, now seen corresponding path program 1 times [2018-07-24 14:15:36,926 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:36,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:36,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:36,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:36,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:37,804 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 14:15:38,326 WARN L169 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-07-24 14:15:38,747 WARN L169 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-07-24 14:15:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 420 proven. 245 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:15:39,301 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:39,301 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:15:39,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:39,310 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:39,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-07-24 14:15:39,712 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 413 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-07-24 14:15:39,992 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:39,992 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:15:40,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:40,010 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:41,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-07-24 14:15:41,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 413 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-07-24 14:15:42,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:15:42,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-07-24 14:15:42,093 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:15:42,095 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:15:42,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:15:42,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:15:42,096 INFO L87 Difference]: Start difference. First operand 103599 states and 127948 transitions. Second operand 16 states. [2018-07-24 14:15:51,851 WARN L169 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 12 [2018-07-24 14:15:53,860 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-07-24 14:15:56,352 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-07-24 14:16:01,485 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-07-24 14:16:06,430 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-07-24 14:16:08,921 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 Received shutdown request... [2018-07-24 14:16:32,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-24 14:16:32,462 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:16:32,468 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:16:32,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:16:32 BoogieIcfgContainer [2018-07-24 14:16:32,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:16:32,470 INFO L168 Benchmark]: Toolchain (without parser) took 228830.79 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 295.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:16:32,471 INFO L168 Benchmark]: CDTParser took 0.23 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 14:16:32,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2561.54 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 14:16:32,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.95 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 14:16:32,473 INFO L168 Benchmark]: Boogie Preprocessor took 917.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 912.3 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 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:16:32,474 INFO L168 Benchmark]: RCFGBuilder took 13511.94 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 188.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -183.2 MB). Peak memory consumption was 762.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:16:32,475 INFO L168 Benchmark]: TraceAbstraction took 211597.33 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 1.1 GB in the end (delta: 1.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:16:32,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2561.54 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 236.95 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 917.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 912.3 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 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13511.94 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 188.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -183.2 MB). Peak memory consumption was 762.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211597.33 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 1.1 GB in the end (delta: 1.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (103599states) and interpolant automaton (currently 103 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (143779 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 184.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4341 SDtfs, 57300 SDslu, 3007 SDs, 0 SdLazy, 89770 SolverSat, 18852 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 141.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7190 GetRequests, 6979 SyntacticMatches, 20 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103599occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 15190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 6382 NumberOfCodeBlocks, 6382 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9807 ConstructedInterpolants, 0 QuantifiedInterpolants, 10539468 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5698 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 8955/10485 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_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-16-32-494.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-16-32-494.csv Completed graceful shutdown