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_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:14:30,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:14:30,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:14:30,308 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:14:30,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:14:30,310 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:14:30,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:14:30,314 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:14:30,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:14:30,318 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:14:30,319 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:14:30,319 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:14:30,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:14:30,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:14:30,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:14:30,330 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:14:30,331 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:14:30,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:14:30,335 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:14:30,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:14:30,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:14:30,338 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:14:30,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:14:30,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:14:30,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:14:30,341 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:14:30,342 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:14:30,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:14:30,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:14:30,345 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:14:30,345 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:14:30,346 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:14:30,346 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:14:30,346 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:14:30,348 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:14:30,348 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:14:30,349 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 15:14:30,368 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:14:30,368 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:14:30,369 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:14:30,369 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:14:30,369 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:14:30,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:14:30,370 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:14:30,370 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:14:30,370 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:14:30,370 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:14:30,370 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:14:30,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:14:30,371 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:14:30,371 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:14:30,371 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:14:30,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:14:30,372 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:14:30,372 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:14:30,372 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:14:30,372 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:14:30,373 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:14:30,373 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:14:30,373 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:14:30,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:14:30,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:14:30,374 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:14:30,374 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:14:30,374 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:14:30,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:14:30,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:14:30,375 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:14:30,375 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:14:30,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:14:30,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:14:30,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:14:30,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:14:30,441 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:14:30,441 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:14:30,442 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-07-24 15:14:30,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32ee7c5/7a57308750db470e92c50b23c621bc41/FLAGaa484df5d [2018-07-24 15:14:31,364 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:14:31,366 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-07-24 15:14:31,417 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32ee7c5/7a57308750db470e92c50b23c621bc41/FLAGaa484df5d [2018-07-24 15:14:31,433 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32ee7c5/7a57308750db470e92c50b23c621bc41 [2018-07-24 15:14:31,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:14:31,449 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:14:31,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:14:31,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:14:31,461 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:14:31,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:14:31" (1/1) ... [2018-07-24 15:14:31,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4f1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:31, skipping insertion in model container [2018-07-24 15:14:31,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:14:31" (1/1) ... [2018-07-24 15:14:31,984 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:14:34,010 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:14:34,030 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:14:35,283 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:14:35,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35 WrapperNode [2018-07-24 15:14:35,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:14:35,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:14:35,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:14:35,907 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:14:35,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:36,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:36,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:14:36,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:14:36,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:14:36,219 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:14:37,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (1/1) ... [2018-07-24 15:14:37,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:14:37,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:14:37,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:14:37,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:14:37,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (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 15:14:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:14:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:14:37,991 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 15:14:37,992 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 15:14:37,992 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 15:14:37,992 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 15:14:37,992 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 15:14:37,992 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 15:14:37,992 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 15:14:37,992 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 15:14:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:14:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:14:37,993 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 15:14:37,993 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 15:14:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:14:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:14:37,994 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 15:14:37,994 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 15:15:00,658 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:15:00,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:00 BoogieIcfgContainer [2018-07-24 15:15:00,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:15:00,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:15:00,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:15:00,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:15:00,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:14:31" (1/3) ... [2018-07-24 15:15:00,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15963ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:00, skipping insertion in model container [2018-07-24 15:15:00,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:14:35" (2/3) ... [2018-07-24 15:15:00,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15963ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:00, skipping insertion in model container [2018-07-24 15:15:00,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:00" (3/3) ... [2018-07-24 15:15:00,666 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label44_true-unreach-call.c [2018-07-24 15:15:00,676 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:15:00,686 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:15:00,753 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:15:00,753 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:15:00,754 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:15:00,754 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:15:00,754 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:15:00,754 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:15:00,754 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:15:00,754 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:15:00,754 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:15:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:15:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-24 15:15:00,828 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:00,830 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] [2018-07-24 15:15:00,830 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 15:15:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1985963032, now seen corresponding path program 1 times [2018-07-24 15:15:00,837 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:00,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:00,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:00,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:00,892 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:01,329 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:15:01,434 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 15:15:01,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:01,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:15:01,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:01,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:15:01,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:15:01,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:15:01,466 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 15:15:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:15:20,154 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-07-24 15:15:20,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:15:20,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-07-24 15:15:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:15:20,216 INFO L225 Difference]: With dead ends: 4998 [2018-07-24 15:15:20,216 INFO L226 Difference]: Without dead ends: 3218 [2018-07-24 15:15:20,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:15:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-07-24 15:15:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-07-24 15:15:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-07-24 15:15:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-07-24 15:15:20,434 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 41 [2018-07-24 15:15:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:15:20,435 INFO L471 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-07-24 15:15:20,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:15:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-07-24 15:15:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-24 15:15:20,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:20,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:20,448 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 15:15:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1687513870, now seen corresponding path program 1 times [2018-07-24 15:15:20,449 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:20,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:20,454 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:15:21,024 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:21,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:15:21,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:21,026 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:15:21,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:15:21,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:15:21,027 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-07-24 15:15:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:15:54,530 INFO L93 Difference]: Finished difference Result 9683 states and 17692 transitions. [2018-07-24 15:15:54,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:15:54,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-07-24 15:15:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:15:54,584 INFO L225 Difference]: With dead ends: 9683 [2018-07-24 15:15:54,585 INFO L226 Difference]: Without dead ends: 6474 [2018-07-24 15:15:54,597 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:15:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2018-07-24 15:15:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 6371. [2018-07-24 15:15:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6371 states. [2018-07-24 15:15:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 9959 transitions. [2018-07-24 15:15:54,826 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 9959 transitions. Word has length 113 [2018-07-24 15:15:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:15:54,827 INFO L471 AbstractCegarLoop]: Abstraction has 6371 states and 9959 transitions. [2018-07-24 15:15:54,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:15:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 9959 transitions. [2018-07-24 15:15:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-24 15:15:54,833 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:54,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:54,833 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 15:15:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash 612888765, now seen corresponding path program 1 times [2018-07-24 15:15:54,834 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:54,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:54,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:54,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:54,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:55,181 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:15:55,507 WARN L169 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-07-24 15:15:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:15:55,546 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:55,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:15:55,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:55,547 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:15:55,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:15:55,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:15:55,548 INFO L87 Difference]: Start difference. First operand 6371 states and 9959 transitions. Second operand 6 states. [2018-07-24 15:16:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:25,553 INFO L93 Difference]: Finished difference Result 24591 states and 39615 transitions. [2018-07-24 15:16:25,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:16:25,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-07-24 15:16:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:25,654 INFO L225 Difference]: With dead ends: 24591 [2018-07-24 15:16:25,654 INFO L226 Difference]: Without dead ends: 18226 [2018-07-24 15:16:25,685 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 15:16:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18226 states. [2018-07-24 15:16:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18226 to 18009. [2018-07-24 15:16:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18009 states. [2018-07-24 15:16:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18009 states to 18009 states and 26569 transitions. [2018-07-24 15:16:26,147 INFO L78 Accepts]: Start accepts. Automaton has 18009 states and 26569 transitions. Word has length 115 [2018-07-24 15:16:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 18009 states and 26569 transitions. [2018-07-24 15:16:26,147 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:16:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18009 states and 26569 transitions. [2018-07-24 15:16:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-24 15:16:26,153 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:26,154 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:16:26,154 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 15:16:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1489987446, now seen corresponding path program 1 times [2018-07-24 15:16:26,158 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:26,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:26,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:26,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:26,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 68 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:16:26,416 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:16:26,416 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 15:16:26,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:26,430 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:16:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:26,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:16:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:16:26,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:16:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:16:26,978 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:16:26,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 15:16:26,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:26,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:16:26,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:16:26,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:16:26,980 INFO L87 Difference]: Start difference. First operand 18009 states and 26569 transitions. Second operand 3 states. [2018-07-24 15:16:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:41,200 INFO L93 Difference]: Finished difference Result 43282 states and 66125 transitions. [2018-07-24 15:16:41,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:16:41,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-07-24 15:16:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:41,323 INFO L225 Difference]: With dead ends: 43282 [2018-07-24 15:16:41,323 INFO L226 Difference]: Without dead ends: 25279 [2018-07-24 15:16:41,384 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 371 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 15:16:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25279 states. [2018-07-24 15:16:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25279 to 25178. [2018-07-24 15:16:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25178 states. [2018-07-24 15:16:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25178 states to 25178 states and 36261 transitions. [2018-07-24 15:16:41,955 INFO L78 Accepts]: Start accepts. Automaton has 25178 states and 36261 transitions. Word has length 186 [2018-07-24 15:16:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:41,956 INFO L471 AbstractCegarLoop]: Abstraction has 25178 states and 36261 transitions. [2018-07-24 15:16:41,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:16:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 25178 states and 36261 transitions. [2018-07-24 15:16:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 15:16:41,963 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:41,963 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:16:41,964 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 15:16:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1247543126, now seen corresponding path program 1 times [2018-07-24 15:16:41,964 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:41,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:41,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:42,250 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:16:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 68 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:16:42,625 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:16:42,625 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 15:16:42,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:42,641 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:16:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:42,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:16:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 15:16:43,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:16:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 68 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:16:44,051 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:16:44,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 15:16:44,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:44,052 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:16:44,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:16:44,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:16:44,053 INFO L87 Difference]: Start difference. First operand 25178 states and 36261 transitions. Second operand 5 states. [2018-07-24 15:17:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:11,654 INFO L93 Difference]: Finished difference Result 65630 states and 97682 transitions. [2018-07-24 15:17:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:17:11,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-07-24 15:17:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:11,806 INFO L225 Difference]: With dead ends: 65630 [2018-07-24 15:17:11,807 INFO L226 Difference]: Without dead ends: 40458 [2018-07-24 15:17:11,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 15:17:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40458 states. [2018-07-24 15:17:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40458 to 39989. [2018-07-24 15:17:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39989 states. [2018-07-24 15:17:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39989 states to 39989 states and 57071 transitions. [2018-07-24 15:17:12,727 INFO L78 Accepts]: Start accepts. Automaton has 39989 states and 57071 transitions. Word has length 219 [2018-07-24 15:17:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:12,728 INFO L471 AbstractCegarLoop]: Abstraction has 39989 states and 57071 transitions. [2018-07-24 15:17:12,728 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:17:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 39989 states and 57071 transitions. [2018-07-24 15:17:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-24 15:17:12,747 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:12,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:17:12,748 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 15:17:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1175665904, now seen corresponding path program 1 times [2018-07-24 15:17:12,748 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:12,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:12,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:12,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:12,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 68 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:13,526 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:17:13,527 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 15:17:13,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:13,547 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:17:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:13,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:17:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-24 15:17:13,833 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:17:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 15:17:14,110 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:17:14,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2018-07-24 15:17:14,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:14,111 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:17:14,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:17:14,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:14,114 INFO L87 Difference]: Start difference. First operand 39989 states and 57071 transitions. Second operand 3 states. [2018-07-24 15:17:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:30,409 INFO L93 Difference]: Finished difference Result 113031 states and 170771 transitions. [2018-07-24 15:17:30,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:17:30,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 279 [2018-07-24 15:17:30,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:30,713 INFO L225 Difference]: With dead ends: 113031 [2018-07-24 15:17:30,713 INFO L226 Difference]: Without dead ends: 73048 [2018-07-24 15:17:30,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:30,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73048 states. [2018-07-24 15:17:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73048 to 72896. [2018-07-24 15:17:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72896 states. [2018-07-24 15:17:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72896 states to 72896 states and 107304 transitions. [2018-07-24 15:17:32,339 INFO L78 Accepts]: Start accepts. Automaton has 72896 states and 107304 transitions. Word has length 279 [2018-07-24 15:17:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:32,339 INFO L471 AbstractCegarLoop]: Abstraction has 72896 states and 107304 transitions. [2018-07-24 15:17:32,340 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:17:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 72896 states and 107304 transitions. [2018-07-24 15:17:32,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-24 15:17:32,365 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:32,366 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:17:32,366 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 15:17:32,366 INFO L82 PathProgramCache]: Analyzing trace with hash 564396846, now seen corresponding path program 1 times [2018-07-24 15:17:32,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:32,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:32,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:32,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 68 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:33,203 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:17:33,204 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 15:17:33,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:33,216 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:17:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:33,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:17:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 15:17:34,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:17:34,371 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:17:34,474 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:17:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 68 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:17:34,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:17:34,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2018-07-24 15:17:34,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:34,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:17:34,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:17:34,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:17:34,767 INFO L87 Difference]: Start difference. First operand 72896 states and 107304 transitions. Second operand 5 states. [2018-07-24 15:18:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:18:01,308 INFO L93 Difference]: Finished difference Result 193600 states and 307646 transitions. [2018-07-24 15:18:01,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:18:01,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2018-07-24 15:18:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:18:01,738 INFO L225 Difference]: With dead ends: 193600 [2018-07-24 15:18:01,739 INFO L226 Difference]: Without dead ends: 120710 [2018-07-24 15:18:01,869 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 556 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:18:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120710 states. [2018-07-24 15:18:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120710 to 119190. [2018-07-24 15:18:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119190 states. [2018-07-24 15:18:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119190 states to 119190 states and 179587 transitions. [2018-07-24 15:18:04,485 INFO L78 Accepts]: Start accepts. Automaton has 119190 states and 179587 transitions. Word has length 279 [2018-07-24 15:18:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:18:04,486 INFO L471 AbstractCegarLoop]: Abstraction has 119190 states and 179587 transitions. [2018-07-24 15:18:04,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:18:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 119190 states and 179587 transitions. [2018-07-24 15:18:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-24 15:18:04,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:18:04,517 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:04,517 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 15:18:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1326098654, now seen corresponding path program 1 times [2018-07-24 15:18:04,518 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:18:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:04,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:04,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:18:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 102 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:18:04,835 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:04,835 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 15:18:05,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:05,579 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:05,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-07-24 15:18:05,780 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 102 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:18:05,946 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:18:05,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 15:18:05,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:18:05,947 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:18:05,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:18:05,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:18:05,948 INFO L87 Difference]: Start difference. First operand 119190 states and 179587 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 15:18:24,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:18:24,198 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:18:24,204 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:18:24,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:18:24 BoogieIcfgContainer [2018-07-24 15:18:24,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:18:24,205 INFO L168 Benchmark]: Toolchain (without parser) took 232758.18 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,207 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:18:24,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4456.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 169.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -84.0 MB). Peak memory consumption was 487.3 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.76 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,209 INFO L168 Benchmark]: Boogie Preprocessor took 1701.65 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 896.5 MB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -909.1 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,210 INFO L168 Benchmark]: RCFGBuilder took 22737.84 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 206.0 MB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 335.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,211 INFO L168 Benchmark]: TraceAbstraction took 203545.03 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 891.3 MB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -481.1 MB). Peak memory consumption was 410.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:18:24,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4456.19 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 169.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -84.0 MB). Peak memory consumption was 487.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.76 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1701.65 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 896.5 MB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -909.1 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 22737.84 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 206.0 MB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 335.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 203545.03 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 891.3 MB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -481.1 MB). Peak memory consumption was 410.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (119190states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (294437 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 186.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6026 SDtfs, 36970 SDslu, 5006 SDs, 0 SdLazy, 66783 SolverSat, 16774 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 160.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2592 GetRequests, 2526 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119190occurred 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: 6.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 2565 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2797 NumberOfCodeBlocks, 2797 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4043 ConstructedInterpolants, 0 QuantifiedInterpolants, 2689502 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2378 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2167/2987 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_label44_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-18-24-243.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label44_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-18-24-243.csv Completed graceful shutdown