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_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:12:34,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:12:34,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:12:34,306 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:12:34,307 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:12:34,308 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:12:34,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:12:34,314 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:12:34,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:12:34,318 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:12:34,320 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:12:34,320 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:12:34,321 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:12:34,322 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:12:34,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:12:34,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:12:34,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:12:34,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:12:34,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:12:34,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:12:34,347 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:12:34,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:12:34,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:12:34,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:12:34,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:12:34,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:12:34,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:12:34,361 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:12:34,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:12:34,366 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:12:34,366 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:12:34,367 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:12:34,367 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:12:34,367 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:12:34,368 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:12:34,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:12:34,371 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 15:12:34,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:12:34,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:12:34,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:12:34,388 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:12:34,388 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:12:34,388 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:12:34,388 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:12:34,389 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:12:34,389 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:12:34,389 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:12:34,389 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:12:34,390 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:12:34,390 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:12:34,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:12:34,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:12:34,391 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:12:34,391 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:12:34,391 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:12:34,391 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:12:34,392 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:12:34,392 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:12:34,392 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:12:34,392 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:12:34,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:12:34,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:12:34,393 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:12:34,393 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:12:34,393 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:12:34,393 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:12:34,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:12:34,394 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:12:34,394 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:12:34,394 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:12:34,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:12:34,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:12:34,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:12:34,479 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:12:34,480 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:12:34,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-07-24 15:12:34,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afbfdac9/9e600752e2bc42b9a48e7bb95480ed1c/FLAGfb5ab2c3f [2018-07-24 15:12:35,417 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:12:35,418 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-07-24 15:12:35,464 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afbfdac9/9e600752e2bc42b9a48e7bb95480ed1c/FLAGfb5ab2c3f [2018-07-24 15:12:35,479 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4afbfdac9/9e600752e2bc42b9a48e7bb95480ed1c [2018-07-24 15:12:35,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:12:35,492 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:12:35,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:12:35,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:12:35,501 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:12:35,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:12:35" (1/1) ... [2018-07-24 15:12:35,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6375fbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:35, skipping insertion in model container [2018-07-24 15:12:35,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:12:35" (1/1) ... [2018-07-24 15:12:35,955 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:12:37,705 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:12:37,723 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:12:38,888 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:12:39,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39 WrapperNode [2018-07-24 15:12:39,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:12:39,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:12:39,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:12:39,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:12:39,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:39,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:39,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:12:39,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:12:39,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:12:39,800 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:12:40,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:40,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:40,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:40,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:41,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:41,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:41,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (1/1) ... [2018-07-24 15:12:41,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:12:41,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:12:41,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:12:41,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:12:41,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (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 15:12:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:12:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:12:41,500 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 15:12:41,500 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 15:12:41,500 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 15:12:41,501 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 15:12:41,501 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 15:12:41,501 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 15:12:41,501 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 15:12:41,501 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 15:12:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:12:41,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:12:41,502 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 15:12:41,502 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 15:12:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:12:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:12:41,503 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 15:12:41,503 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 15:13:02,456 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:13:02,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:13:02 BoogieIcfgContainer [2018-07-24 15:13:02,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:13:02,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:13:02,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:13:02,461 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:13:02,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:12:35" (1/3) ... [2018-07-24 15:13:02,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:13:02, skipping insertion in model container [2018-07-24 15:13:02,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:12:39" (2/3) ... [2018-07-24 15:13:02,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:13:02, skipping insertion in model container [2018-07-24 15:13:02,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:13:02" (3/3) ... [2018-07-24 15:13:02,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label39_true-unreach-call.c [2018-07-24 15:13:02,475 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:13:02,486 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:13:02,557 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:13:02,558 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:13:02,558 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:13:02,558 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:13:02,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:13:02,558 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:13:02,558 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:13:02,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:13:02,559 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:13:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:13:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-24 15:13:02,623 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:13:02,624 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] [2018-07-24 15:13:02,625 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 15:13:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash 627504998, now seen corresponding path program 1 times [2018-07-24 15:13:02,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:13:02,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:02,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:13:02,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:02,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:13:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:13:03,071 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:13:03,181 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 15:13:03,183 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:13:03,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:13:03,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:13:03,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:13:03,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:13:03,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:13:03,208 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 15:13:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:13:20,353 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-07-24 15:13:20,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:13:20,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-07-24 15:13:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:13:20,401 INFO L225 Difference]: With dead ends: 4998 [2018-07-24 15:13:20,402 INFO L226 Difference]: Without dead ends: 3218 [2018-07-24 15:13:20,415 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 15:13:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-07-24 15:13:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-07-24 15:13:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-07-24 15:13:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-07-24 15:13:20,647 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 38 [2018-07-24 15:13:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:13:20,648 INFO L471 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-07-24 15:13:20,648 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:13:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-07-24 15:13:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-24 15:13:20,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:13:20,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:20,663 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 15:13:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash -507756645, now seen corresponding path program 1 times [2018-07-24 15:13:20,664 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:13:20,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:20,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:13:20,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:20,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:13:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:13:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:13:21,257 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:13:21,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:13:21,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:13:21,259 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:13:21,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:13:21,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:13:21,260 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-07-24 15:13:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:13:55,644 INFO L93 Difference]: Finished difference Result 9683 states and 17692 transitions. [2018-07-24 15:13:55,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:13:55,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-07-24 15:13:55,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:13:55,695 INFO L225 Difference]: With dead ends: 9683 [2018-07-24 15:13:55,695 INFO L226 Difference]: Without dead ends: 6474 [2018-07-24 15:13:55,707 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 15:13:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2018-07-24 15:13:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 6371. [2018-07-24 15:13:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6371 states. [2018-07-24 15:13:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 9959 transitions. [2018-07-24 15:13:55,916 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 9959 transitions. Word has length 110 [2018-07-24 15:13:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:13:55,917 INFO L471 AbstractCegarLoop]: Abstraction has 6371 states and 9959 transitions. [2018-07-24 15:13:55,917 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:13:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 9959 transitions. [2018-07-24 15:13:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-24 15:13:55,922 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:13:55,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:55,922 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 15:13:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash 841559024, now seen corresponding path program 1 times [2018-07-24 15:13:55,923 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:13:55,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:55,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:13:55,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:13:55,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:13:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:13:56,195 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:13:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:13:56,297 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:13:56,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:13:56,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:13:56,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:13:56,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:13:56,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:13:56,299 INFO L87 Difference]: Start difference. First operand 6371 states and 9959 transitions. Second operand 6 states. [2018-07-24 15:14:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:14:23,498 INFO L93 Difference]: Finished difference Result 24562 states and 39552 transitions. [2018-07-24 15:14:23,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:14:23,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-07-24 15:14:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:14:23,600 INFO L225 Difference]: With dead ends: 24562 [2018-07-24 15:14:23,600 INFO L226 Difference]: Without dead ends: 18197 [2018-07-24 15:14:23,629 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 15:14:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18197 states. [2018-07-24 15:14:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18197 to 17983. [2018-07-24 15:14:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17983 states. [2018-07-24 15:14:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17983 states to 17983 states and 26520 transitions. [2018-07-24 15:14:24,101 INFO L78 Accepts]: Start accepts. Automaton has 17983 states and 26520 transitions. Word has length 112 [2018-07-24 15:14:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:14:24,101 INFO L471 AbstractCegarLoop]: Abstraction has 17983 states and 26520 transitions. [2018-07-24 15:14:24,101 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:14:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 17983 states and 26520 transitions. [2018-07-24 15:14:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-24 15:14:24,112 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:14:24,113 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:14:24,113 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 15:14:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash -980568860, now seen corresponding path program 1 times [2018-07-24 15:14:24,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:14:24,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:14:24,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:14:24,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:14:24,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:14:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:14:24,384 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:14:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 62 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:14:24,732 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:14:24,733 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 15:14:24,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:14:24,743 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:14:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:14:24,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:14:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:14:25,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:14:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 15:14:25,244 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:14:25,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 15:14:25,245 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:14:25,245 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:14:25,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:14:25,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:14:25,246 INFO L87 Difference]: Start difference. First operand 17983 states and 26520 transitions. Second operand 3 states. [2018-07-24 15:14:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:14:40,699 INFO L93 Difference]: Finished difference Result 41839 states and 63221 transitions. [2018-07-24 15:14:40,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:14:40,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-07-24 15:14:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:14:40,806 INFO L225 Difference]: With dead ends: 41839 [2018-07-24 15:14:40,806 INFO L226 Difference]: Without dead ends: 23862 [2018-07-24 15:14:40,859 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:14:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23862 states. [2018-07-24 15:14:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23862 to 23762. [2018-07-24 15:14:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23762 states. [2018-07-24 15:14:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23762 states to 23762 states and 33433 transitions. [2018-07-24 15:14:41,402 INFO L78 Accepts]: Start accepts. Automaton has 23762 states and 33433 transitions. Word has length 183 [2018-07-24 15:14:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:14:41,403 INFO L471 AbstractCegarLoop]: Abstraction has 23762 states and 33433 transitions. [2018-07-24 15:14:41,403 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:14:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 23762 states and 33433 transitions. [2018-07-24 15:14:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-24 15:14:41,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:14:41,412 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:14:41,413 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 15:14:41,413 INFO L82 PathProgramCache]: Analyzing trace with hash -988303400, now seen corresponding path program 1 times [2018-07-24 15:14:41,413 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:14:41,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:14:41,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:14:41,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:14:41,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:14:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:14:41,723 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:14:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:14:42,143 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:14:42,144 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 15:14:42,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:14:42,158 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:14:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:14:42,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:14:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 15:14:42,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:14:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:14:42,912 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:14:42,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 15:14:42,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:14:42,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:14:42,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:14:42,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:14:42,914 INFO L87 Difference]: Start difference. First operand 23762 states and 33433 transitions. Second operand 5 states. [2018-07-24 15:15:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:15:14,006 INFO L93 Difference]: Finished difference Result 62769 states and 91481 transitions. [2018-07-24 15:15:14,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:15:14,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-07-24 15:15:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:15:14,150 INFO L225 Difference]: With dead ends: 62769 [2018-07-24 15:15:14,150 INFO L226 Difference]: Without dead ends: 39013 [2018-07-24 15:15:14,200 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 15:15:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39013 states. [2018-07-24 15:15:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39013 to 38544. [2018-07-24 15:15:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38544 states. [2018-07-24 15:15:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38544 states to 38544 states and 53861 transitions. [2018-07-24 15:15:14,986 INFO L78 Accepts]: Start accepts. Automaton has 38544 states and 53861 transitions. Word has length 216 [2018-07-24 15:15:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:15:14,986 INFO L471 AbstractCegarLoop]: Abstraction has 38544 states and 53861 transitions. [2018-07-24 15:15:14,987 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:15:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 38544 states and 53861 transitions. [2018-07-24 15:15:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 15:15:15,008 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:15,008 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:15:15,008 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 15:15:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2072446812, now seen corresponding path program 1 times [2018-07-24 15:15:15,009 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:15,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:15,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:15,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:15,011 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:15:15,763 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:15:15,763 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 15:15:15,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:15,782 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:15:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:15,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:15:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-07-24 15:15:16,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:15:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 15:15:16,331 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:15:16,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2018-07-24 15:15:16,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:16,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:15:16,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:15:16,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:15:16,333 INFO L87 Difference]: Start difference. First operand 38544 states and 53861 transitions. Second operand 3 states. [2018-07-24 15:15:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:15:32,108 INFO L93 Difference]: Finished difference Result 110141 states and 163625 transitions. [2018-07-24 15:15:32,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:15:32,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2018-07-24 15:15:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:15:32,392 INFO L225 Difference]: With dead ends: 110141 [2018-07-24 15:15:32,393 INFO L226 Difference]: Without dead ends: 71603 [2018-07-24 15:15:32,481 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 553 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 15:15:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71603 states. [2018-07-24 15:15:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71603 to 71451. [2018-07-24 15:15:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71451 states. [2018-07-24 15:15:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71451 states to 71451 states and 103993 transitions. [2018-07-24 15:15:33,836 INFO L78 Accepts]: Start accepts. Automaton has 71451 states and 103993 transitions. Word has length 276 [2018-07-24 15:15:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:15:33,836 INFO L471 AbstractCegarLoop]: Abstraction has 71451 states and 103993 transitions. [2018-07-24 15:15:33,836 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:15:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 71451 states and 103993 transitions. [2018-07-24 15:15:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 15:15:33,859 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:33,860 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:15:33,860 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 15:15:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash -775939618, now seen corresponding path program 1 times [2018-07-24 15:15:33,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:33,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:33,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:33,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:33,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:15:34,587 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:15:34,588 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 15:15:34,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:34,604 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:15:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:34,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:15:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 15:15:34,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:15:35,130 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:15:35,238 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:15:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:15:35,902 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:15:35,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2018-07-24 15:15:35,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:35,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:15:35,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:15:35,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:15:35,905 INFO L87 Difference]: Start difference. First operand 71451 states and 103993 transitions. Second operand 5 states. [2018-07-24 15:16:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:07,646 INFO L93 Difference]: Finished difference Result 188003 states and 296065 transitions. [2018-07-24 15:16:07,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:16:07,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2018-07-24 15:16:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:08,011 INFO L225 Difference]: With dead ends: 188003 [2018-07-24 15:16:08,011 INFO L226 Difference]: Without dead ends: 116558 [2018-07-24 15:16:08,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:16:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116558 states. [2018-07-24 15:16:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116558 to 115035. [2018-07-24 15:16:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115035 states. [2018-07-24 15:16:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115035 states to 115035 states and 172447 transitions. [2018-07-24 15:16:10,646 INFO L78 Accepts]: Start accepts. Automaton has 115035 states and 172447 transitions. Word has length 276 [2018-07-24 15:16:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:10,647 INFO L471 AbstractCegarLoop]: Abstraction has 115035 states and 172447 transitions. [2018-07-24 15:16:10,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:16:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 115035 states and 172447 transitions. [2018-07-24 15:16:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-24 15:16:10,680 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:10,681 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:16:10,681 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 15:16:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 708562955, now seen corresponding path program 1 times [2018-07-24 15:16:10,681 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:10,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:10,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:10,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:10,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 93 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:16:10,897 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:16:10,897 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 15:16:10,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:10,905 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:16:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:11,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:16:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-07-24 15:16:11,148 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:16:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 93 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 15:16:11,361 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:16:11,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 15:16:11,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:11,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:16:11,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:16:11,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:16:11,362 INFO L87 Difference]: Start difference. First operand 115035 states and 172447 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 15:16:31,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:16:31,142 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:16:31,148 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:16:31,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:16:31 BoogieIcfgContainer [2018-07-24 15:16:31,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:16:31,149 INFO L168 Benchmark]: Toolchain (without parser) took 235658.06 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -386.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,150 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 15:16:31,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3952.93 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -123.0 MB). Peak memory consumption was 477.5 MB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 352.45 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,152 INFO L168 Benchmark]: Boogie Preprocessor took 1625.18 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 866.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -886.2 MB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,153 INFO L168 Benchmark]: RCFGBuilder took 21031.91 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 239.6 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 316.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,154 INFO L168 Benchmark]: TraceAbstraction took 208690.67 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 837.8 MB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 244.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 15:16:31,160 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 3952.93 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -123.0 MB). Peak memory consumption was 477.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 352.45 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1625.18 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 866.6 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -886.2 MB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 21031.91 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 239.6 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 316.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 208690.67 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 837.8 MB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 244.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (115035states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (225690 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 194.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5964 SDtfs, 35665 SDslu, 4882 SDs, 0 SdLazy, 65479 SolverSat, 16423 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 168.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2562 GetRequests, 2496 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115035occurred 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: 6.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 2564 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 2758 NumberOfCodeBlocks, 2758 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3989 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644640 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2358 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2062/2882 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_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-16-31-176.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-16-31-176.csv Completed graceful shutdown