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/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:01:17,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:01:17,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:01:17,732 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:01:17,732 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:01:17,733 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:01:17,735 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:01:17,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:01:17,738 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:01:17,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:01:17,740 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:01:17,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:01:17,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:01:17,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:01:17,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:01:17,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:01:17,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:01:17,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:01:17,749 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:01:17,751 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:01:17,752 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:01:17,753 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:01:17,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:01:17,756 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:01:17,756 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:01:17,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:01:17,758 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:01:17,759 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:01:17,760 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:01:17,761 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:01:17,762 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:01:17,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:01:17,763 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:01:17,763 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:01:17,764 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:01:17,765 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:01:17,765 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 15:01:17,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:01:17,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:01:17,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:01:17,796 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:01:17,796 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:01:17,797 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:01:17,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:01:17,797 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:01:17,797 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:01:17,797 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:01:17,798 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:01:17,798 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:01:17,799 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:01:17,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:01:17,799 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:01:17,799 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:01:17,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:01:17,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:01:17,803 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:01:17,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:01:17,803 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:01:17,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:01:17,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:01:17,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:01:17,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:01:17,804 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:01:17,804 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:01:17,805 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:01:17,805 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:01:17,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:01:17,805 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:01:17,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:01:17,806 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:01:17,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:01:17,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:01:17,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:01:17,878 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:01:17,879 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:01:17,880 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-07-24 15:01:18,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb9cac41e/60b8589eb7ef4c8992cb154e2ea732df/FLAG2d8dcf43f [2018-07-24 15:01:18,680 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:01:18,681 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-07-24 15:01:18,706 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb9cac41e/60b8589eb7ef4c8992cb154e2ea732df/FLAG2d8dcf43f [2018-07-24 15:01:18,721 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb9cac41e/60b8589eb7ef4c8992cb154e2ea732df [2018-07-24 15:01:18,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:01:18,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:01:18,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:18,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:01:18,750 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:01:18,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:18" (1/1) ... [2018-07-24 15:01:18,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:18, skipping insertion in model container [2018-07-24 15:01:18,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:18" (1/1) ... [2018-07-24 15:01:19,066 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:01:19,886 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:19,906 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:01:20,372 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:20,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20 WrapperNode [2018-07-24 15:01:20,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:20,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:20,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:01:20,528 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:01:20,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:20,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:20,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:20,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:01:20,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:01:20,718 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:01:21,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (1/1) ... [2018-07-24 15:01:21,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:01:21,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:01:21,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:01:21,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:01:21,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (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 15:01:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:01:21,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:01:21,421 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 15:01:21,421 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 15:01:21,421 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 15:01:21,421 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 15:01:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:01:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:01:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:01:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:01:21,422 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 15:01:21,422 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 15:01:30,195 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:01:30,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:30 BoogieIcfgContainer [2018-07-24 15:01:30,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:01:30,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:01:30,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:01:30,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:01:30,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:01:18" (1/3) ... [2018-07-24 15:01:30,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e4bd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:30, skipping insertion in model container [2018-07-24 15:01:30,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:20" (2/3) ... [2018-07-24 15:01:30,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e4bd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:30, skipping insertion in model container [2018-07-24 15:01:30,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:30" (3/3) ... [2018-07-24 15:01:30,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-07-24 15:01:30,220 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:01:30,231 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:01:30,303 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:01:30,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:01:30,304 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:01:30,305 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:01:30,305 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:01:30,305 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:01:30,305 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:01:30,305 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:01:30,306 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:01:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 15:01:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-24 15:01:30,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:30,365 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, 1, 1] [2018-07-24 15:01:30,365 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 15:01:30,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1391678927, now seen corresponding path program 1 times [2018-07-24 15:01:30,374 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:30,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:30,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:30,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:30,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:30,840 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:30,962 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 15:01:30,965 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:30,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:01:30,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:30,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:01:30,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:01:30,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:30,994 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 15:01:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:38,075 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 15:01:38,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:01:38,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-07-24 15:01:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:38,111 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 15:01:38,112 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 15:01:38,124 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 15:01:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 15:01:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 15:01:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 15:01:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-07-24 15:01:38,271 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 71 [2018-07-24 15:01:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:38,272 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-07-24 15:01:38,272 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:01:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-07-24 15:01:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-24 15:01:38,282 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:38,282 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, 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] [2018-07-24 15:01:38,283 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 15:01:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1433755882, now seen corresponding path program 1 times [2018-07-24 15:01:38,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:38,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:38,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:38,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:38,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:38,573 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:38,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 15:01:38,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:38,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:01:38,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:01:38,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 15:01:38,577 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 5 states. [2018-07-24 15:01:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:52,457 INFO L93 Difference]: Finished difference Result 5815 states and 11218 transitions. [2018-07-24 15:01:52,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:01:52,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-07-24 15:01:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:52,490 INFO L225 Difference]: With dead ends: 5815 [2018-07-24 15:01:52,491 INFO L226 Difference]: Without dead ends: 4347 [2018-07-24 15:01:52,499 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:01:52,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2018-07-24 15:01:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4315. [2018-07-24 15:01:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2018-07-24 15:01:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 6830 transitions. [2018-07-24 15:01:52,648 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 6830 transitions. Word has length 161 [2018-07-24 15:01:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:52,649 INFO L471 AbstractCegarLoop]: Abstraction has 4315 states and 6830 transitions. [2018-07-24 15:01:52,649 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:01:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 6830 transitions. [2018-07-24 15:01:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-24 15:01:52,664 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:52,665 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, 3, 3, 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 15:01:52,665 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 15:01:52,665 INFO L82 PathProgramCache]: Analyzing trace with hash 989064827, now seen corresponding path program 1 times [2018-07-24 15:01:52,668 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:52,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:52,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:52,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:52,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:01:52,974 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:01:52,974 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 15:01:52,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:52,985 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:01:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:53,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:01:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:01:53,549 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:01:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:01:54,009 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:01:54,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 15:01:54,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:54,011 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:01:54,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:01:54,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:01:54,012 INFO L87 Difference]: Start difference. First operand 4315 states and 6830 transitions. Second operand 5 states. [2018-07-24 15:02:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:01,985 INFO L93 Difference]: Finished difference Result 11692 states and 18881 transitions. [2018-07-24 15:02:01,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:01,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-07-24 15:02:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:02,042 INFO L225 Difference]: With dead ends: 11692 [2018-07-24 15:02:02,042 INFO L226 Difference]: Without dead ends: 7383 [2018-07-24 15:02:02,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 457 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:02:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7383 states. [2018-07-24 15:02:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7383 to 7286. [2018-07-24 15:02:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7286 states. [2018-07-24 15:02:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7286 states to 7286 states and 9840 transitions. [2018-07-24 15:02:02,255 INFO L78 Accepts]: Start accepts. Automaton has 7286 states and 9840 transitions. Word has length 231 [2018-07-24 15:02:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:02,256 INFO L471 AbstractCegarLoop]: Abstraction has 7286 states and 9840 transitions. [2018-07-24 15:02:02,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7286 states and 9840 transitions. [2018-07-24 15:02:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-24 15:02:02,267 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:02,267 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, 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] [2018-07-24 15:02:02,267 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 15:02:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash -604168251, now seen corresponding path program 1 times [2018-07-24 15:02:02,268 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:02,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:02,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:02,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:02,673 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:03,210 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:02:03,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:02:03,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:03,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:02:03,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:02:03,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:02:03,212 INFO L87 Difference]: Start difference. First operand 7286 states and 9840 transitions. Second operand 6 states. [2018-07-24 15:02:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:09,440 INFO L93 Difference]: Finished difference Result 19814 states and 27182 transitions. [2018-07-24 15:02:09,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:09,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2018-07-24 15:02:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:09,493 INFO L225 Difference]: With dead ends: 19814 [2018-07-24 15:02:09,493 INFO L226 Difference]: Without dead ends: 12534 [2018-07-24 15:02:09,516 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:02:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12534 states. [2018-07-24 15:02:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12534 to 12360. [2018-07-24 15:02:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12360 states. [2018-07-24 15:02:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12360 states to 12360 states and 16295 transitions. [2018-07-24 15:02:09,802 INFO L78 Accepts]: Start accepts. Automaton has 12360 states and 16295 transitions. Word has length 306 [2018-07-24 15:02:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:09,803 INFO L471 AbstractCegarLoop]: Abstraction has 12360 states and 16295 transitions. [2018-07-24 15:02:09,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:02:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12360 states and 16295 transitions. [2018-07-24 15:02:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-07-24 15:02:09,816 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:09,816 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:09,817 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 15:02:09,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1548311808, now seen corresponding path program 1 times [2018-07-24 15:02:09,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:09,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:09,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:09,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:09,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 265 proven. 69 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:10,200 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:10,201 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 15:02:10,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:10,216 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:10,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:02:10,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 265 proven. 69 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:10,734 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:10,735 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:10,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:10,750 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:11,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:02:11,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 265 proven. 69 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:11,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:11,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 15:02:11,766 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:11,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 15:02:11,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 15:02:11,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:02:11,769 INFO L87 Difference]: Start difference. First operand 12360 states and 16295 transitions. Second operand 8 states. [2018-07-24 15:02:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:22,807 INFO L93 Difference]: Finished difference Result 27777 states and 37837 transitions. [2018-07-24 15:02:22,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 15:02:22,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2018-07-24 15:02:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:22,880 INFO L225 Difference]: With dead ends: 27777 [2018-07-24 15:02:22,881 INFO L226 Difference]: Without dead ends: 15423 [2018-07-24 15:02:22,921 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1435 GetRequests, 1415 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:02:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15423 states. [2018-07-24 15:02:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15423 to 15337. [2018-07-24 15:02:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15337 states. [2018-07-24 15:02:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 19564 transitions. [2018-07-24 15:02:23,188 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 19564 transitions. Word has length 355 [2018-07-24 15:02:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:23,188 INFO L471 AbstractCegarLoop]: Abstraction has 15337 states and 19564 transitions. [2018-07-24 15:02:23,189 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 15:02:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 19564 transitions. [2018-07-24 15:02:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-24 15:02:23,199 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:23,199 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:23,199 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 15:02:23,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1651040968, now seen corresponding path program 1 times [2018-07-24 15:02:23,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:23,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:23,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:23,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:23,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 269 proven. 73 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:23,804 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:23,804 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 15:02:23,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:23,820 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:23,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:02:24,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 269 proven. 73 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:24,380 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:24,380 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:24,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:24,398 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:24,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 15:02:24,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 269 proven. 73 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 15:02:25,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:25,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 15:02:25,048 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:25,049 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:02:25,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:02:25,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:02:25,050 INFO L87 Difference]: Start difference. First operand 15337 states and 19564 transitions. Second operand 9 states. [2018-07-24 15:02:28,381 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-07-24 15:02:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:38,798 INFO L93 Difference]: Finished difference Result 50427 states and 68804 transitions. [2018-07-24 15:02:38,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 15:02:38,798 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 359 [2018-07-24 15:02:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:38,935 INFO L225 Difference]: With dead ends: 50427 [2018-07-24 15:02:38,935 INFO L226 Difference]: Without dead ends: 30450 [2018-07-24 15:02:39,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1435 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 15:02:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30450 states. [2018-07-24 15:02:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30450 to 29085. [2018-07-24 15:02:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29085 states. [2018-07-24 15:02:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29085 states to 29085 states and 34053 transitions. [2018-07-24 15:02:39,599 INFO L78 Accepts]: Start accepts. Automaton has 29085 states and 34053 transitions. Word has length 359 [2018-07-24 15:02:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:39,599 INFO L471 AbstractCegarLoop]: Abstraction has 29085 states and 34053 transitions. [2018-07-24 15:02:39,600 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:02:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 29085 states and 34053 transitions. [2018-07-24 15:02:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-24 15:02:39,615 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:39,616 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 15:02:39,616 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 15:02:39,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1693827909, now seen corresponding path program 1 times [2018-07-24 15:02:39,617 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:39,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:39,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:39,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:39,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:39,961 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 283 proven. 112 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 15:02:40,406 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:40,406 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:40,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:40,414 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:40,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:02:41,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:02:41,588 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:41,588 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:41,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:41,608 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:41,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:02:42,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:02:42,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:42,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 15 [2018-07-24 15:02:42,477 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:42,478 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 15:02:42,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 15:02:42,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:02:42,479 INFO L87 Difference]: Start difference. First operand 29085 states and 34053 transitions. Second operand 11 states. [2018-07-24 15:02:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:53,066 INFO L93 Difference]: Finished difference Result 62483 states and 73670 transitions. [2018-07-24 15:02:53,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 15:02:53,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 392 [2018-07-24 15:02:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:53,174 INFO L225 Difference]: With dead ends: 62483 [2018-07-24 15:02:53,175 INFO L226 Difference]: Without dead ends: 33492 [2018-07-24 15:02:53,239 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1596 GetRequests, 1564 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2018-07-24 15:02:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33492 states. [2018-07-24 15:02:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33492 to 28347. [2018-07-24 15:02:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28347 states. [2018-07-24 15:02:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28347 states to 28347 states and 31715 transitions. [2018-07-24 15:02:53,771 INFO L78 Accepts]: Start accepts. Automaton has 28347 states and 31715 transitions. Word has length 392 [2018-07-24 15:02:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:53,772 INFO L471 AbstractCegarLoop]: Abstraction has 28347 states and 31715 transitions. [2018-07-24 15:02:53,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 15:02:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 28347 states and 31715 transitions. [2018-07-24 15:02:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-24 15:02:53,796 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:53,796 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:53,797 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 15:02:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash -553932419, now seen corresponding path program 1 times [2018-07-24 15:02:53,797 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:53,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:53,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:53,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:53,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 414 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:02:54,810 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:54,810 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:54,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:54,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:54,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-07-24 15:02:55,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 192 proven. 220 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 15:02:56,148 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:02:56,149 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-07-24 15:02:56,149 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:56,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:02:56,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:02:56,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:02:56,150 INFO L87 Difference]: Start difference. First operand 28347 states and 31715 transitions. Second operand 5 states. [2018-07-24 15:03:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:00,988 INFO L93 Difference]: Finished difference Result 62410 states and 69714 transitions. [2018-07-24 15:03:00,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:03:00,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 452 [2018-07-24 15:03:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:01,081 INFO L225 Difference]: With dead ends: 62410 [2018-07-24 15:03:01,081 INFO L226 Difference]: Without dead ends: 34157 [2018-07-24 15:03:01,143 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 902 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-07-24 15:03:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34157 states. [2018-07-24 15:03:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34157 to 31184. [2018-07-24 15:03:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31184 states. [2018-07-24 15:03:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31184 states to 31184 states and 34707 transitions. [2018-07-24 15:03:01,691 INFO L78 Accepts]: Start accepts. Automaton has 31184 states and 34707 transitions. Word has length 452 [2018-07-24 15:03:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:01,691 INFO L471 AbstractCegarLoop]: Abstraction has 31184 states and 34707 transitions. [2018-07-24 15:03:01,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:03:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31184 states and 34707 transitions. [2018-07-24 15:03:01,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-07-24 15:03:01,704 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:01,705 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:01,705 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:01,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1605565434, now seen corresponding path program 1 times [2018-07-24 15:03:01,705 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:01,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:01,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:01,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:01,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 6 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:03:02,200 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:02,200 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:02,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:02,210 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:02,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:03:02,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:03:03,069 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:03:03,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2018-07-24 15:03:03,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:03:03,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:03:03,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:03:03,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:03:03,072 INFO L87 Difference]: Start difference. First operand 31184 states and 34707 transitions. Second operand 3 states. [2018-07-24 15:03:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:06,490 INFO L93 Difference]: Finished difference Result 60271 states and 67206 transitions. [2018-07-24 15:03:06,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:03:06,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 470 [2018-07-24 15:03:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:06,572 INFO L225 Difference]: With dead ends: 60271 [2018-07-24 15:03:06,572 INFO L226 Difference]: Without dead ends: 29181 [2018-07-24 15:03:06,632 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 944 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:03:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29181 states. [2018-07-24 15:03:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29181 to 26337. [2018-07-24 15:03:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26337 states. [2018-07-24 15:03:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26337 states to 26337 states and 28932 transitions. [2018-07-24 15:03:07,076 INFO L78 Accepts]: Start accepts. Automaton has 26337 states and 28932 transitions. Word has length 470 [2018-07-24 15:03:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:07,077 INFO L471 AbstractCegarLoop]: Abstraction has 26337 states and 28932 transitions. [2018-07-24 15:03:07,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:03:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 26337 states and 28932 transitions. [2018-07-24 15:03:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-07-24 15:03:07,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:07,090 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:07,090 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:07,090 INFO L82 PathProgramCache]: Analyzing trace with hash 614383285, now seen corresponding path program 1 times [2018-07-24 15:03:07,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:07,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:07,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:07,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:07,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:07,838 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 15:03:08,193 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 15:03:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 263 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:03:08,752 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:08,752 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:08,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:08,761 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:08,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-07-24 15:03:09,171 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-07-24 15:03:09,591 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:03:09,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 11 [2018-07-24 15:03:09,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:03:09,592 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:03:09,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:03:09,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:03:09,593 INFO L87 Difference]: Start difference. First operand 26337 states and 28932 transitions. Second operand 3 states. [2018-07-24 15:03:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:12,865 INFO L93 Difference]: Finished difference Result 63294 states and 70719 transitions. [2018-07-24 15:03:12,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:03:12,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 523 [2018-07-24 15:03:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:12,978 INFO L225 Difference]: With dead ends: 63294 [2018-07-24 15:03:12,979 INFO L226 Difference]: Without dead ends: 36968 [2018-07-24 15:03:13,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:03:13,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36968 states. [2018-07-24 15:03:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36968 to 32762. [2018-07-24 15:03:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32762 states. [2018-07-24 15:03:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32762 states to 32762 states and 35879 transitions. [2018-07-24 15:03:13,554 INFO L78 Accepts]: Start accepts. Automaton has 32762 states and 35879 transitions. Word has length 523 [2018-07-24 15:03:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:13,555 INFO L471 AbstractCegarLoop]: Abstraction has 32762 states and 35879 transitions. [2018-07-24 15:03:13,555 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:03:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 32762 states and 35879 transitions. [2018-07-24 15:03:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-07-24 15:03:13,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:13,582 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-07-24 15:03:13,582 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1040263266, now seen corresponding path program 1 times [2018-07-24 15:03:13,583 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:13,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:13,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:13,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:13,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 146 proven. 723 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 15:03:14,790 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:14,790 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:14,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:14,798 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:15,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-07-24 15:03:15,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 256 proven. 366 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-07-24 15:03:16,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:03:16,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2018-07-24 15:03:16,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:03:16,438 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:03:16,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:03:16,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2018-07-24 15:03:16,439 INFO L87 Difference]: Start difference. First operand 32762 states and 35879 transitions. Second operand 5 states. [2018-07-24 15:03:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:22,770 INFO L93 Difference]: Finished difference Result 85109 states and 94555 transitions. [2018-07-24 15:03:22,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:03:22,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 760 [2018-07-24 15:03:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:22,877 INFO L225 Difference]: With dead ends: 85109 [2018-07-24 15:03:22,877 INFO L226 Difference]: Without dead ends: 52396 [2018-07-24 15:03:22,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1518 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:03:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52396 states. [2018-07-24 15:03:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52396 to 50182. [2018-07-24 15:03:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50182 states. [2018-07-24 15:03:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50182 states to 50182 states and 55395 transitions. [2018-07-24 15:03:23,691 INFO L78 Accepts]: Start accepts. Automaton has 50182 states and 55395 transitions. Word has length 760 [2018-07-24 15:03:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:23,692 INFO L471 AbstractCegarLoop]: Abstraction has 50182 states and 55395 transitions. [2018-07-24 15:03:23,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:03:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50182 states and 55395 transitions. [2018-07-24 15:03:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2018-07-24 15:03:23,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:23,735 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:03:23,736 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:23,736 INFO L82 PathProgramCache]: Analyzing trace with hash -841661783, now seen corresponding path program 1 times [2018-07-24 15:03:23,736 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:23,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:23,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:23,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:23,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:24,930 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 15:03:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 288 proven. 1334 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 15:03:28,638 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:28,638 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:28,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:28,646 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:29,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1186 proven. 2 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-07-24 15:03:30,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:30,974 WARN L169 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-07-24 15:03:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 590 proven. 226 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2018-07-24 15:03:32,922 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:32,922 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:32,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:32,937 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:33,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1186 proven. 2 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-07-24 15:03:35,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 590 proven. 226 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2018-07-24 15:03:36,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:36,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5, 5, 5] total 36 [2018-07-24 15:03:36,759 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:36,761 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-24 15:03:36,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-24 15:03:36,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2018-07-24 15:03:36,762 INFO L87 Difference]: Start difference. First operand 50182 states and 55395 transitions. Second operand 29 states. [2018-07-24 15:03:46,939 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-07-24 15:04:01,532 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 15:04:06,740 WARN L169 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-07-24 15:04:24,548 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-07-24 15:04:36,599 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-07-24 15:05:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:05:04,004 INFO L93 Difference]: Finished difference Result 125887 states and 166033 transitions. [2018-07-24 15:05:04,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-24 15:05:04,004 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 1288 [2018-07-24 15:05:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:05:04,008 INFO L225 Difference]: With dead ends: 125887 [2018-07-24 15:05:04,008 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 15:05:04,725 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5529 GetRequests, 5284 SyntacticMatches, 2 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23120 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=7834, Invalid=51946, Unknown=0, NotChecked=0, Total=59780 [2018-07-24 15:05:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 15:05:04,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 15:05:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 15:05:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 15:05:04,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1288 [2018-07-24 15:05:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:05:04,727 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 15:05:04,727 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-24 15:05:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 15:05:04,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 15:05:04,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 15:05:04,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,956 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:04,985 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,707 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:05,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,193 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,529 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:06,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,906 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,974 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:07,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,077 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:05:08,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-07-24 15:05:08,216 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 15:05:08,217 INFO L168 Benchmark]: Toolchain (without parser) took 229480.86 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -946.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,218 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 15:05:08,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1785.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 189.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,221 INFO L168 Benchmark]: Boogie Preprocessor took 633.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,222 INFO L168 Benchmark]: RCFGBuilder took 8846.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 547.0 MB). Peak memory consumption was 547.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,223 INFO L168 Benchmark]: TraceAbstraction took 218018.75 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -598.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 15:05:08,234 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 1785.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 189.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 633.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8846.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 547.0 MB). Peak memory consumption was 547.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218018.75 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -598.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 201]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 35. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-05-08-258.csv Completed graceful shutdown