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/Problem19_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:08:27,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:08:27,671 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:08:27,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:08:27,692 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:08:27,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:08:27,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:08:27,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:08:27,702 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:08:27,705 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:08:27,708 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:08:27,708 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:08:27,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:08:27,710 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:08:27,711 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:08:27,712 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:08:27,713 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:08:27,715 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:08:27,717 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:08:27,719 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:08:27,720 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:08:27,721 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:08:27,724 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:08:27,724 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:08:27,724 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:08:27,725 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:08:27,726 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:08:27,727 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:08:27,728 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:08:27,729 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:08:27,730 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:08:27,730 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:08:27,731 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:08:27,731 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:08:27,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:08:27,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:08:27,733 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 15:08:27,759 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:08:27,760 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:08:27,761 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:08:27,761 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:08:27,761 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:08:27,761 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:08:27,761 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:08:27,762 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:08:27,762 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:08:27,762 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:08:27,762 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:08:27,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:08:27,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:08:27,763 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:08:27,764 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:08:27,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:08:27,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:08:27,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:08:27,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:08:27,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:08:27,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:08:27,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:08:27,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:08:27,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:08:27,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:08:27,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:08:27,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:08:27,766 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:08:27,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:08:27,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:08:27,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:08:27,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:08:27,767 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:08:27,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:08:27,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:08:27,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:08:27,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:08:27,836 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:08:27,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label09_true-unreach-call.c [2018-07-24 15:08:28,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60dca68f2/ae7d0d48e8f24952b7d2726abea93bc6/FLAG3a6808206 [2018-07-24 15:08:28,759 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:08:28,760 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label09_true-unreach-call.c [2018-07-24 15:08:28,806 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60dca68f2/ae7d0d48e8f24952b7d2726abea93bc6/FLAG3a6808206 [2018-07-24 15:08:28,824 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60dca68f2/ae7d0d48e8f24952b7d2726abea93bc6 [2018-07-24 15:08:28,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:08:28,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:08:28,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:08:28,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:08:28,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:08:28,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:28" (1/1) ... [2018-07-24 15:08:28,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a5f959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:28, skipping insertion in model container [2018-07-24 15:08:28,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:28" (1/1) ... [2018-07-24 15:08:29,332 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:08:31,035 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:08:31,053 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:08:32,109 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:08:32,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32 WrapperNode [2018-07-24 15:08:32,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:08:32,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:08:32,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:08:32,691 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:08:32,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:32,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:33,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:08:33,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:08:33,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:08:33,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:08:34,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (1/1) ... [2018-07-24 15:08:34,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:08:34,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:08:34,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:08:34,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:08:34,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (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 15:08:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:08:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:08:34,737 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_output5 [2018-07-24 15:08:34,737 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_output5 [2018-07-24 15:08:34,737 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 15:08:34,737 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 15:08:34,738 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_output6 [2018-07-24 15:08:34,738 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_output6 [2018-07-24 15:08:34,738 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 15:08:34,738 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 15:08:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:08:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:08:34,739 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 15:08:34,739 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 15:08:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:08:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:08:34,740 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 15:08:34,740 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 15:08:55,570 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:08:55,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:55 BoogieIcfgContainer [2018-07-24 15:08:55,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:08:55,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:08:55,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:08:55,577 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:08:55,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:08:28" (1/3) ... [2018-07-24 15:08:55,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289f2a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:55, skipping insertion in model container [2018-07-24 15:08:55,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:32" (2/3) ... [2018-07-24 15:08:55,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289f2a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:55, skipping insertion in model container [2018-07-24 15:08:55,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:55" (3/3) ... [2018-07-24 15:08:55,580 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label09_true-unreach-call.c [2018-07-24 15:08:55,590 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:08:55,600 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:08:55,667 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:08:55,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:08:55,668 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:08:55,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:08:55,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:08:55,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:08:55,668 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:08:55,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:08:55,669 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:08:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:08:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-24 15:08:55,735 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:08:55,737 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] [2018-07-24 15:08:55,737 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 15:08:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash 705906926, now seen corresponding path program 1 times [2018-07-24 15:08:55,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:08:55,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:55,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:08:55,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:55,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:08:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:08:56,325 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 15:08:56,327 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:08:56,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 15:08:56,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:08:56,335 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 15:08:56,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 15:08:56,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:08:56,380 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-07-24 15:09:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:09:22,603 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-07-24 15:09:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 15:09:22,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-07-24 15:09:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:09:22,666 INFO L225 Difference]: With dead ends: 6510 [2018-07-24 15:09:22,666 INFO L226 Difference]: Without dead ends: 4726 [2018-07-24 15:09:22,680 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 15:09:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-07-24 15:09:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-07-24 15:09:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-07-24 15:09:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-07-24 15:09:22,924 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 56 [2018-07-24 15:09:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:09:22,925 INFO L471 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-07-24 15:09:22,925 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:09:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-07-24 15:09:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-24 15:09:22,933 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:09:22,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:09:22,934 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 15:09:22,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1294215997, now seen corresponding path program 1 times [2018-07-24 15:09:22,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:09:22,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:22,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:22,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:22,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:09:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:09:23,412 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:09:23,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:09:23,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:09:23,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:09:23,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:09:23,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:09:23,415 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-07-24 15:10:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:01,964 INFO L93 Difference]: Finished difference Result 14138 states and 22631 transitions. [2018-07-24 15:10:01,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:10:01,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-07-24 15:10:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:02,019 INFO L225 Difference]: With dead ends: 14138 [2018-07-24 15:10:02,020 INFO L226 Difference]: Without dead ends: 9457 [2018-07-24 15:10:02,033 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:10:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2018-07-24 15:10:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 9310. [2018-07-24 15:10:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9310 states. [2018-07-24 15:10:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9310 states to 9310 states and 13128 transitions. [2018-07-24 15:10:02,266 INFO L78 Accepts]: Start accepts. Automaton has 9310 states and 13128 transitions. Word has length 128 [2018-07-24 15:10:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:02,267 INFO L471 AbstractCegarLoop]: Abstraction has 9310 states and 13128 transitions. [2018-07-24 15:10:02,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:10:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 9310 states and 13128 transitions. [2018-07-24 15:10:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-24 15:10:02,270 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:02,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:02,271 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 15:10:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1359304614, now seen corresponding path program 1 times [2018-07-24 15:10:02,271 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:02,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:02,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:02,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:02,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:02,615 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:10:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:10:03,006 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:10:03,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:10:03,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:03,008 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:10:03,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:10:03,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:10:03,009 INFO L87 Difference]: Start difference. First operand 9310 states and 13128 transitions. Second operand 6 states. [2018-07-24 15:10:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:30,303 INFO L93 Difference]: Finished difference Result 36362 states and 53330 transitions. [2018-07-24 15:10:30,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:10:30,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-07-24 15:10:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:30,431 INFO L225 Difference]: With dead ends: 36362 [2018-07-24 15:10:30,431 INFO L226 Difference]: Without dead ends: 27058 [2018-07-24 15:10:30,476 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:10:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27058 states. [2018-07-24 15:10:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27058 to 26799. [2018-07-24 15:10:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26799 states. [2018-07-24 15:10:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26799 states to 26799 states and 36605 transitions. [2018-07-24 15:10:31,080 INFO L78 Accepts]: Start accepts. Automaton has 26799 states and 36605 transitions. Word has length 130 [2018-07-24 15:10:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:31,080 INFO L471 AbstractCegarLoop]: Abstraction has 26799 states and 36605 transitions. [2018-07-24 15:10:31,080 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:10:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 26799 states and 36605 transitions. [2018-07-24 15:10:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-24 15:10:31,087 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:31,088 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, 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 15:10:31,088 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 15:10:31,088 INFO L82 PathProgramCache]: Analyzing trace with hash 114698359, now seen corresponding path program 1 times [2018-07-24 15:10:31,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:31,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:31,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:31,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:31,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:31,351 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:10:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:31,701 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:31,702 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 15:10:31,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:31,712 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:31,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 15:10:32,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:32,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:10:32,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 15:10:32,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:32,767 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:10:32,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:10:32,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:10:32,769 INFO L87 Difference]: Start difference. First operand 26799 states and 36605 transitions. Second operand 5 states. [2018-07-24 15:10:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:56,453 INFO L93 Difference]: Finished difference Result 70531 states and 103384 transitions. [2018-07-24 15:10:56,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:10:56,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2018-07-24 15:10:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:56,660 INFO L225 Difference]: With dead ends: 70531 [2018-07-24 15:10:56,661 INFO L226 Difference]: Without dead ends: 43738 [2018-07-24 15:10:56,774 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 412 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:10:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43738 states. [2018-07-24 15:10:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43738 to 43322. [2018-07-24 15:10:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43322 states. [2018-07-24 15:10:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43322 states to 43322 states and 61555 transitions. [2018-07-24 15:10:57,841 INFO L78 Accepts]: Start accepts. Automaton has 43322 states and 61555 transitions. Word has length 209 [2018-07-24 15:10:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:57,841 INFO L471 AbstractCegarLoop]: Abstraction has 43322 states and 61555 transitions. [2018-07-24 15:10:57,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:10:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43322 states and 61555 transitions. [2018-07-24 15:10:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-24 15:10:57,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:57,852 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, 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] [2018-07-24 15:10:57,852 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 15:10:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2084332957, now seen corresponding path program 1 times [2018-07-24 15:10:57,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:57,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:57,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:57,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:57,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 98 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:58,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:58,366 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 15:10:58,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:58,870 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:58,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 15:10:59,139 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 15:10:59,423 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:10:59,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-07-24 15:10:59,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:59,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:10:59,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:10:59,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 15:10:59,425 INFO L87 Difference]: Start difference. First operand 43322 states and 61555 transitions. Second operand 3 states. [2018-07-24 15:11:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:11:16,715 INFO L93 Difference]: Finished difference Result 105096 states and 152904 transitions. [2018-07-24 15:11:16,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:11:16,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-07-24 15:11:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:11:16,908 INFO L225 Difference]: With dead ends: 105096 [2018-07-24 15:11:16,908 INFO L226 Difference]: Without dead ends: 61780 [2018-07-24 15:11:16,990 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 15:11:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61780 states. [2018-07-24 15:11:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61780 to 61701. [2018-07-24 15:11:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61701 states. [2018-07-24 15:11:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61701 states to 61701 states and 84476 transitions. [2018-07-24 15:11:18,692 INFO L78 Accepts]: Start accepts. Automaton has 61701 states and 84476 transitions. Word has length 216 [2018-07-24 15:11:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:11:18,692 INFO L471 AbstractCegarLoop]: Abstraction has 61701 states and 84476 transitions. [2018-07-24 15:11:18,693 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:11:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 61701 states and 84476 transitions. [2018-07-24 15:11:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 15:11:18,701 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:11:18,701 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, 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] [2018-07-24 15:11:18,701 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 15:11:18,702 INFO L82 PathProgramCache]: Analyzing trace with hash -529025382, now seen corresponding path program 1 times [2018-07-24 15:11:18,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:11:18,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:18,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:18,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:18,703 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:11:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:18,971 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:11:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 98 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:11:19,031 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:11:19,031 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 15:11:19,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:19,042 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:11:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:19,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:11:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:11:19,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:11:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:11:19,289 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:11:19,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 15:11:19,290 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:11:19,290 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:11:19,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:11:19,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:11:19,291 INFO L87 Difference]: Start difference. First operand 61701 states and 84476 transitions. Second operand 3 states. [2018-07-24 15:11:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:11:31,583 INFO L93 Difference]: Finished difference Result 146270 states and 207045 transitions. [2018-07-24 15:11:31,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:11:31,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2018-07-24 15:11:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:11:31,838 INFO L225 Difference]: With dead ends: 146270 [2018-07-24 15:11:31,838 INFO L226 Difference]: Without dead ends: 84575 [2018-07-24 15:11:31,951 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 437 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:11:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84575 states. [2018-07-24 15:11:33,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84575 to 84449. [2018-07-24 15:11:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84449 states. [2018-07-24 15:11:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84449 states to 84449 states and 112584 transitions. [2018-07-24 15:11:34,144 INFO L78 Accepts]: Start accepts. Automaton has 84449 states and 112584 transitions. Word has length 219 [2018-07-24 15:11:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:11:34,145 INFO L471 AbstractCegarLoop]: Abstraction has 84449 states and 112584 transitions. [2018-07-24 15:11:34,145 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:11:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 84449 states and 112584 transitions. [2018-07-24 15:11:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-24 15:11:34,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:11:34,156 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:11:34,156 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 15:11:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1978536822, now seen corresponding path program 1 times [2018-07-24 15:11:34,157 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:11:34,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:34,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:34,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:34,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:11:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 98 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:11:34,408 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:11:34,408 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:11:34,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:34,416 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:11:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:34,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:11:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 15:11:34,656 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:11:34,893 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:11:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 98 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:11:35,151 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:11:35,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 15:11:35,152 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:11:35,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:11:35,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:11:35,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:11:35,153 INFO L87 Difference]: Start difference. First operand 84449 states and 112584 transitions. Second operand 5 states. [2018-07-24 15:11:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:11:59,670 INFO L93 Difference]: Finished difference Result 226185 states and 316247 transitions. [2018-07-24 15:11:59,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:11:59,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-07-24 15:11:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:12:00,202 INFO L225 Difference]: With dead ends: 226185 [2018-07-24 15:12:00,202 INFO L226 Difference]: Without dead ends: 141742 [2018-07-24 15:12:00,377 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:12:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141742 states. [2018-07-24 15:12:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141742 to 139956. [2018-07-24 15:12:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139956 states. [2018-07-24 15:12:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139956 states to 139956 states and 188396 transitions. [2018-07-24 15:12:03,484 INFO L78 Accepts]: Start accepts. Automaton has 139956 states and 188396 transitions. Word has length 225 [2018-07-24 15:12:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:12:03,484 INFO L471 AbstractCegarLoop]: Abstraction has 139956 states and 188396 transitions. [2018-07-24 15:12:03,484 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:12:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 139956 states and 188396 transitions. [2018-07-24 15:12:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2018-07-24 15:12:03,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:12:03,531 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:03,532 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 15:12:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash 284539722, now seen corresponding path program 1 times [2018-07-24 15:12:03,532 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:12:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:12:03,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:12:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:12:03,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:12:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:12:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 241 proven. 90 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-07-24 15:12:04,462 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:12:04,462 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 15:12:04,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:12:04,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:12:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:12:04,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:12:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 15:12:06,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:12:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 241 proven. 90 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-07-24 15:12:07,658 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:12:07,659 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:12:07,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:12:07,675 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:12:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:12:08,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:12:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 15:12:08,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:12:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 241 proven. 90 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-07-24 15:12:10,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:12:10,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 15:12:10,118 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:12:10,121 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:12:10,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:12:10,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:12:10,122 INFO L87 Difference]: Start difference. First operand 139956 states and 188396 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 15:12:19,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 15:12:19,512 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:12:19,518 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:12:19,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:12:19 BoogieIcfgContainer [2018-07-24 15:12:19,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:12:19,520 INFO L168 Benchmark]: Toolchain (without parser) took 230684.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 513.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:19,521 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:12:19,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3852.36 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 193.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -105.1 MB). Peak memory consumption was 487.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:19,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.74 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:19,523 INFO L168 Benchmark]: Boogie Preprocessor took 1657.88 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 865.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -895.2 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:19,524 INFO L168 Benchmark]: RCFGBuilder took 20893.52 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 263.2 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 274.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:12:19,525 INFO L168 Benchmark]: TraceAbstraction took 203946.02 ms. Allocated memory was 2.8 GB in the beginning and 4.2 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:12:19,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3852.36 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 193.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -105.1 MB). Peak memory consumption was 487.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.74 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1657.88 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 865.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -895.2 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20893.52 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 263.2 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 274.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 203946.02 ms. Allocated memory was 2.8 GB in the beginning and 4.2 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (139956states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (13738 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 181.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8708 SDtfs, 40526 SDslu, 4794 SDs, 0 SdLazy, 65222 SolverSat, 16674 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 153.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5326 GetRequests, 5250 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139956occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2852 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 4689 NumberOfCodeBlocks, 4689 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7296 ConstructedInterpolants, 0 QuantifiedInterpolants, 7062015 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4094 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 3632/4326 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/Problem19_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-12-19-548.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label09_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-12-19-548.csv Completed graceful shutdown