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_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:07:09,239 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:07:09,241 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:07:09,255 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:07:09,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:07:09,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:07:09,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:07:09,259 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:07:09,262 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:07:09,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:07:09,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:07:09,264 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:07:09,265 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:07:09,266 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:07:09,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:07:09,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:07:09,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:07:09,271 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:07:09,273 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:07:09,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:07:09,275 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:07:09,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:07:09,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:07:09,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:07:09,285 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:07:09,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:07:09,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:07:09,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:07:09,289 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:07:09,290 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:07:09,290 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:07:09,293 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:07:09,293 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:07:09,293 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:07:09,294 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:07:09,295 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:07:09,296 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 15:07:09,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:07:09,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:07:09,326 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:07:09,326 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:07:09,326 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:07:09,326 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:07:09,326 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:07:09,327 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:07:09,327 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:07:09,327 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:07:09,327 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:07:09,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:07:09,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:07:09,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:07:09,328 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:07:09,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:07:09,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:07:09,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:07:09,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:07:09,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:07:09,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:07:09,330 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:07:09,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:07:09,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:07:09,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:07:09,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:07:09,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:07:09,331 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:07:09,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:07:09,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:07:09,331 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:07:09,332 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:07:09,332 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:07:09,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:07:09,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:07:09,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:07:09,403 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:07:09,404 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:07:09,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-07-24 15:07:09,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b00aac0/f4d49e7d9ebd45728666b8738de29315/FLAG4e24e8e77 [2018-07-24 15:07:10,408 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:07:10,409 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-07-24 15:07:10,461 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b00aac0/f4d49e7d9ebd45728666b8738de29315/FLAG4e24e8e77 [2018-07-24 15:07:10,476 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b00aac0/f4d49e7d9ebd45728666b8738de29315 [2018-07-24 15:07:10,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:07:10,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:07:10,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:07:10,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:07:10,498 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:07:10,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:07:10" (1/1) ... [2018-07-24 15:07:10,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781dbc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:10, skipping insertion in model container [2018-07-24 15:07:10,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:07:10" (1/1) ... [2018-07-24 15:07:10,972 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:07:12,630 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:07:12,649 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:07:13,978 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:07:14,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14 WrapperNode [2018-07-24 15:07:14,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:07:14,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:07:14,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:07:14,753 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:07:14,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:14,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:15,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:07:15,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:07:15,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:07:15,043 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:07:16,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:16,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (1/1) ... [2018-07-24 15:07:17,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:07:17,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:07:17,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:07:17,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:07:17,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (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 15:07:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:07:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:07:17,078 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 15:07:17,078 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 15:07:17,078 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 15:07:17,078 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 15:07:17,079 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 15:07:17,079 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 15:07:17,079 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 15:07:17,079 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 15:07:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:07:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:07:17,080 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 15:07:17,080 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 15:07:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:07:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:07:17,081 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 15:07:17,081 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 15:07:40,872 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:07:40,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:07:40 BoogieIcfgContainer [2018-07-24 15:07:40,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:07:40,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:07:40,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:07:40,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:07:40,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:07:10" (1/3) ... [2018-07-24 15:07:40,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e5c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:07:40, skipping insertion in model container [2018-07-24 15:07:40,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:07:14" (2/3) ... [2018-07-24 15:07:40,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e5c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:07:40, skipping insertion in model container [2018-07-24 15:07:40,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:07:40" (3/3) ... [2018-07-24 15:07:40,881 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label04_true-unreach-call.c [2018-07-24 15:07:40,891 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:07:40,901 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:07:40,977 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:07:40,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:07:40,979 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:07:40,979 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:07:40,979 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:07:40,979 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:07:40,979 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:07:40,979 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:07:40,980 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:07:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:07:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 15:07:41,044 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:07:41,045 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:07:41,045 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 15:07:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash -425802536, now seen corresponding path program 1 times [2018-07-24 15:07:41,057 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:07:41,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:07:41,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:07:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:07:41,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:07:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:07:41,605 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 15:07:41,607 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:07:41,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 15:07:41,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:07:41,613 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 15:07:41,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 15:07:41,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:07:41,631 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-07-24 15:08:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:08:07,600 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-07-24 15:08:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 15:08:07,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2018-07-24 15:08:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:08:07,658 INFO L225 Difference]: With dead ends: 6465 [2018-07-24 15:08:07,658 INFO L226 Difference]: Without dead ends: 4681 [2018-07-24 15:08:07,671 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 15:08:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-07-24 15:08:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-07-24 15:08:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-07-24 15:08:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-07-24 15:08:07,875 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 69 [2018-07-24 15:08:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:08:07,876 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-07-24 15:08:07,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:08:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-07-24 15:08:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-24 15:08:07,885 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:08:07,887 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:08:07,887 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 15:08:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1567404322, now seen corresponding path program 1 times [2018-07-24 15:08:07,888 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:08:07,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:07,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:08:07,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:07,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:08:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:08:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:08:08,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:08:08,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:08:08,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:08:08,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:08:08,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:08:08,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:08:08,440 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-07-24 15:08:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:08:45,889 INFO L93 Difference]: Finished difference Result 9649 states and 15539 transitions. [2018-07-24 15:08:45,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:08:45,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-07-24 15:08:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:08:45,928 INFO L225 Difference]: With dead ends: 9649 [2018-07-24 15:08:45,929 INFO L226 Difference]: Without dead ends: 6455 [2018-07-24 15:08:45,937 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:08:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2018-07-24 15:08:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6345. [2018-07-24 15:08:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2018-07-24 15:08:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8983 transitions. [2018-07-24 15:08:46,122 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 8983 transitions. Word has length 141 [2018-07-24 15:08:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:08:46,123 INFO L471 AbstractCegarLoop]: Abstraction has 6345 states and 8983 transitions. [2018-07-24 15:08:46,123 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:08:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 8983 transitions. [2018-07-24 15:08:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 15:08:46,136 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:08:46,137 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:08:46,137 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 15:08:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1284430037, now seen corresponding path program 1 times [2018-07-24 15:08:46,138 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:08:46,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:46,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:08:46,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:46,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:08:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:08:46,415 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:08:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:08:46,489 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:08:46,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:08:46,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:08:46,490 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:08:46,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:08:46,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:08:46,491 INFO L87 Difference]: Start difference. First operand 6345 states and 8983 transitions. Second operand 6 states. [2018-07-24 15:09:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:09:15,476 INFO L93 Difference]: Finished difference Result 24607 states and 35808 transitions. [2018-07-24 15:09:15,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:09:15,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-24 15:09:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:09:15,556 INFO L225 Difference]: With dead ends: 24607 [2018-07-24 15:09:15,556 INFO L226 Difference]: Without dead ends: 18268 [2018-07-24 15:09:15,584 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:09:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18268 states. [2018-07-24 15:09:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18268 to 18032. [2018-07-24 15:09:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18032 states. [2018-07-24 15:09:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18032 states to 18032 states and 24383 transitions. [2018-07-24 15:09:16,017 INFO L78 Accepts]: Start accepts. Automaton has 18032 states and 24383 transitions. Word has length 143 [2018-07-24 15:09:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:09:16,019 INFO L471 AbstractCegarLoop]: Abstraction has 18032 states and 24383 transitions. [2018-07-24 15:09:16,019 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:09:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 18032 states and 24383 transitions. [2018-07-24 15:09:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-24 15:09:16,026 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:09:16,030 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:09:16,030 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 15:09:16,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1573454321, now seen corresponding path program 1 times [2018-07-24 15:09:16,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:09:16,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:16,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:16,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:16,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:09:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:16,398 WARN L169 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:09:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:09:16,524 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:09:16,524 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) [2018-07-24 15:09:16,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:16,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:09:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:16,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:09:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:09:17,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:09:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:09:17,551 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:09:17,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 15:09:17,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:09:17,552 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:09:17,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:09:17,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:09:17,553 INFO L87 Difference]: Start difference. First operand 18032 states and 24383 transitions. Second operand 5 states. [2018-07-24 15:09:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:09:40,880 INFO L93 Difference]: Finished difference Result 46945 states and 67270 transitions. [2018-07-24 15:09:40,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:09:40,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2018-07-24 15:09:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:09:41,048 INFO L225 Difference]: With dead ends: 46945 [2018-07-24 15:09:41,048 INFO L226 Difference]: Without dead ends: 28919 [2018-07-24 15:09:41,103 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 438 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:09:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28919 states. [2018-07-24 15:09:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28919 to 28546. [2018-07-24 15:09:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28546 states. [2018-07-24 15:09:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28546 states to 28546 states and 39866 transitions. [2018-07-24 15:09:41,876 INFO L78 Accepts]: Start accepts. Automaton has 28546 states and 39866 transitions. Word has length 222 [2018-07-24 15:09:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:09:41,877 INFO L471 AbstractCegarLoop]: Abstraction has 28546 states and 39866 transitions. [2018-07-24 15:09:41,877 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:09:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 28546 states and 39866 transitions. [2018-07-24 15:09:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 15:09:41,887 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:09:41,888 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:09:41,888 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 15:09:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 669327489, now seen corresponding path program 1 times [2018-07-24 15:09:41,889 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:09:41,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:41,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:41,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:41,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:09:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:09:42,410 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:09:42,410 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 15:09:42,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:42,426 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:09:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:42,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:09:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:09:42,676 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:09:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 15:09:42,921 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:09:42,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-07-24 15:09:42,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:09:42,922 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:09:42,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:09:42,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 15:09:42,923 INFO L87 Difference]: Start difference. First operand 28546 states and 39866 transitions. Second operand 3 states. [2018-07-24 15:10:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:01,133 INFO L93 Difference]: Finished difference Result 69907 states and 99935 transitions. [2018-07-24 15:10:01,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:10:01,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2018-07-24 15:10:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:01,285 INFO L225 Difference]: With dead ends: 69907 [2018-07-24 15:10:01,285 INFO L226 Difference]: Without dead ends: 41367 [2018-07-24 15:10:01,368 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 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 15:10:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41367 states. [2018-07-24 15:10:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41367 to 41322. [2018-07-24 15:10:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41322 states. [2018-07-24 15:10:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41322 states to 41322 states and 55368 transitions. [2018-07-24 15:10:02,118 INFO L78 Accepts]: Start accepts. Automaton has 41322 states and 55368 transitions. Word has length 229 [2018-07-24 15:10:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:02,119 INFO L471 AbstractCegarLoop]: Abstraction has 41322 states and 55368 transitions. [2018-07-24 15:10:02,119 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:10:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41322 states and 55368 transitions. [2018-07-24 15:10:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 15:10:02,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:02,133 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:10:02,134 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 15:10:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1936367436, now seen corresponding path program 1 times [2018-07-24 15:10:02,134 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:02,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:02,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:02,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:02,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:02,430 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:10:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:02,651 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:02,651 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 15:10:02,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:02,663 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:02,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:10:02,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:10:03,039 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:10:03,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 15:10:03,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:03,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:10:03,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:10:03,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:10:03,042 INFO L87 Difference]: Start difference. First operand 41322 states and 55368 transitions. Second operand 3 states. [2018-07-24 15:10:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:18,311 INFO L93 Difference]: Finished difference Result 98399 states and 135526 transitions. [2018-07-24 15:10:18,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:10:18,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2018-07-24 15:10:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:18,489 INFO L225 Difference]: With dead ends: 98399 [2018-07-24 15:10:18,490 INFO L226 Difference]: Without dead ends: 57083 [2018-07-24 15:10:18,561 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:10:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57083 states. [2018-07-24 15:10:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57083 to 56957. [2018-07-24 15:10:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56957 states. [2018-07-24 15:10:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56957 states to 56957 states and 73891 transitions. [2018-07-24 15:10:19,458 INFO L78 Accepts]: Start accepts. Automaton has 56957 states and 73891 transitions. Word has length 232 [2018-07-24 15:10:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:19,458 INFO L471 AbstractCegarLoop]: Abstraction has 56957 states and 73891 transitions. [2018-07-24 15:10:19,459 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:10:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 56957 states and 73891 transitions. [2018-07-24 15:10:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-24 15:10:19,468 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:19,468 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:10:19,468 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 15:10:19,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2065369278, now seen corresponding path program 1 times [2018-07-24 15:10:19,469 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:19,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:19,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:19,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:19,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 124 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:19,820 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:19,820 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 15:10:19,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:19,834 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:19,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:10:20,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 124 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:20,733 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:10:20,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 15:10:20,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:20,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:10:20,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:10:20,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:10:20,735 INFO L87 Difference]: Start difference. First operand 56957 states and 73891 transitions. Second operand 5 states. [2018-07-24 15:10:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:41,461 INFO L93 Difference]: Finished difference Result 153288 states and 207452 transitions. [2018-07-24 15:10:41,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:10:41,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-07-24 15:10:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:41,793 INFO L225 Difference]: With dead ends: 153288 [2018-07-24 15:10:41,793 INFO L226 Difference]: Without dead ends: 96337 [2018-07-24 15:10:41,913 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:10:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96337 states. [2018-07-24 15:10:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96337 to 94671. [2018-07-24 15:10:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94671 states. [2018-07-24 15:10:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94671 states to 94671 states and 124069 transitions. [2018-07-24 15:10:44,505 INFO L78 Accepts]: Start accepts. Automaton has 94671 states and 124069 transitions. Word has length 238 [2018-07-24 15:10:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:44,505 INFO L471 AbstractCegarLoop]: Abstraction has 94671 states and 124069 transitions. [2018-07-24 15:10:44,505 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:10:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 94671 states and 124069 transitions. [2018-07-24 15:10:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-07-24 15:10:44,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:44,520 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:10:44,520 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 15:10:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1287735268, now seen corresponding path program 1 times [2018-07-24 15:10:44,522 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:44,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:44,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:44,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:44,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:45,016 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:10:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 15:10:45,226 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:45,226 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 15:10:45,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:45,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:45,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:10:45,756 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:10:46,370 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:10:46,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 15:10:46,370 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:46,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:10:46,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:10:46,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:10:46,371 INFO L87 Difference]: Start difference. First operand 94671 states and 124069 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 15:11:01,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:11:01,352 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:11:01,357 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:11:01,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:11:01 BoogieIcfgContainer [2018-07-24 15:11:01,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:11:01,359 INFO L168 Benchmark]: Toolchain (without parser) took 230870.16 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -885.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,360 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:11:01,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4261.26 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -116.6 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.06 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,365 INFO L168 Benchmark]: Boogie Preprocessor took 1968.09 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 808.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.8 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,366 INFO L168 Benchmark]: RCFGBuilder took 23861.50 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 310.9 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 206.4 MB). Peak memory consumption was 996.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,367 INFO L168 Benchmark]: TraceAbstraction took 200484.24 ms. Allocated memory was 2.9 GB in the beginning and 3.6 GB in the end (delta: 744.5 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -213.6 MB). Peak memory consumption was 530.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:11:01,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4261.26 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 210.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -116.6 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.06 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1968.09 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 808.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.8 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 23861.50 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 310.9 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 206.4 MB). Peak memory consumption was 996.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200484.24 ms. Allocated memory was 2.9 GB in the beginning and 3.6 GB in the end (delta: 744.5 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -213.6 MB). Peak memory consumption was 530.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (94671states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (163279 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 200.3s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 186.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9739 SDtfs, 34456 SDslu, 4849 SDs, 0 SdLazy, 61840 SolverSat, 15918 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 161.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3034 GetRequests, 2974 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94671occurred 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: 5.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 4037 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 3325 NumberOfCodeBlocks, 3325 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4793 ConstructedInterpolants, 0 QuantifiedInterpolants, 3206617 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2524 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 2202/2680 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_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-11-01-388.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-11-01-388.csv Completed graceful shutdown