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/Problem12_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:54:52,639 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:54:52,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:54:52,658 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:54:52,659 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:54:52,660 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:54:52,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:54:52,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:54:52,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:54:52,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:54:52,674 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:54:52,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:54:52,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:54:52,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:54:52,680 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:54:52,681 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:54:52,692 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:54:52,694 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:54:52,696 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:54:52,697 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:54:52,698 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:54:52,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:54:52,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:54:52,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:54:52,704 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:54:52,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:54:52,707 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:54:52,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:54:52,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:54:52,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:54:52,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:54:52,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:54:52,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:54:52,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:54:52,715 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:54:52,716 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:54:52,716 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 11:54:52,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:54:52,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:54:52,747 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:54:52,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:54:52,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:54:52,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:54:52,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:54:52,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:54:52,751 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:54:52,751 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:54:52,752 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:54:52,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:54:52,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:54:52,753 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:54:52,753 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:54:52,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:54:52,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:54:52,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:54:52,754 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:54:52,756 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:54:52,756 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:54:52,756 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:54:52,756 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:54:52,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:54:52,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:54:52,757 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:54:52,757 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:54:52,757 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:54:52,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:54:52,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:54:52,758 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:54:52,758 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:54:52,758 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:54:52,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:54:52,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:54:52,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:54:52,847 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:54:52,847 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:54:52,848 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-07-24 11:54:53,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61f73b22/c18c4684e7cc42dcab0ff341c3d12ad2/FLAGf54407d6d [2018-07-24 11:54:53,706 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:54:53,706 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label55_false-unreach-call.c [2018-07-24 11:54:53,741 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61f73b22/c18c4684e7cc42dcab0ff341c3d12ad2/FLAGf54407d6d [2018-07-24 11:54:53,759 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61f73b22/c18c4684e7cc42dcab0ff341c3d12ad2 [2018-07-24 11:54:53,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:54:53,774 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:54:53,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:54:53,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:54:53,785 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:54:53,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:54:53" (1/1) ... [2018-07-24 11:54:53,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e68d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:53, skipping insertion in model container [2018-07-24 11:54:53,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:54:53" (1/1) ... [2018-07-24 11:54:54,130 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:54:55,131 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:54:55,150 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:54:55,866 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:54:56,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56 WrapperNode [2018-07-24 11:54:56,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:54:56,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:54:56,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:54:56,154 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:54:56,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:56,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:56,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:54:56,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:54:56,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:54:56,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:54:57,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:54:57,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:54:57,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:54:57,483 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:54:57,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (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 11:54:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:54:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:54:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:54:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:54:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:54:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:54:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:54:57,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:54:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:54:57,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:54:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:54:57,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:54:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:54:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:55:07,907 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:55:07,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:55:07 BoogieIcfgContainer [2018-07-24 11:55:07,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:55:07,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:55:07,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:55:07,913 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:55:07,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:54:53" (1/3) ... [2018-07-24 11:55:07,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b186f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:55:07, skipping insertion in model container [2018-07-24 11:55:07,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (2/3) ... [2018-07-24 11:55:07,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b186f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:55:07, skipping insertion in model container [2018-07-24 11:55:07,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:55:07" (3/3) ... [2018-07-24 11:55:07,917 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label55_false-unreach-call.c [2018-07-24 11:55:07,927 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:55:07,945 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:55:08,025 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:55:08,026 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:55:08,026 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:55:08,026 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:55:08,026 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:55:08,026 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:55:08,027 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:55:08,027 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:55:08,027 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:55:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:55:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 11:55:08,069 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:08,071 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:55:08,071 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1574383501, now seen corresponding path program 1 times [2018-07-24 11:55:08,082 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:08,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:08,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:08,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:08,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:08,509 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:55:08,617 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 11:55:08,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:08,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:55:08,620 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:08,627 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:55:08,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:55:08,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:55:08,649 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 11:55:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:18,024 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 11:55:18,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:55:18,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-07-24 11:55:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:18,070 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 11:55:18,070 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 11:55:18,083 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:55:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 11:55:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 11:55:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 11:55:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-07-24 11:55:18,256 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 15 [2018-07-24 11:55:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:18,257 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-07-24 11:55:18,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:55:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-07-24 11:55:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-24 11:55:18,265 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:18,265 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:55:18,266 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 510083540, now seen corresponding path program 1 times [2018-07-24 11:55:18,266 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:18,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:18,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:18,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:18,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:18,702 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:18,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:55:18,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:18,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:55:18,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:55:18,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:55:18,705 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-07-24 11:55:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:37,304 INFO L93 Difference]: Finished difference Result 6324 states and 12116 transitions. [2018-07-24 11:55:37,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:55:37,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-07-24 11:55:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:37,342 INFO L225 Difference]: With dead ends: 6324 [2018-07-24 11:55:37,342 INFO L226 Difference]: Without dead ends: 4726 [2018-07-24 11:55:37,353 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:55:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-07-24 11:55:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4694. [2018-07-24 11:55:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4694 states. [2018-07-24 11:55:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7666 transitions. [2018-07-24 11:55:37,528 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7666 transitions. Word has length 93 [2018-07-24 11:55:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:37,529 INFO L471 AbstractCegarLoop]: Abstraction has 4694 states and 7666 transitions. [2018-07-24 11:55:37,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:55:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7666 transitions. [2018-07-24 11:55:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 11:55:37,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:37,534 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:55:37,534 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:37,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1561080145, now seen corresponding path program 1 times [2018-07-24 11:55:37,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:37,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:37,835 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:55:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:38,043 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:38,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:55:38,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:38,044 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:55:38,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:55:38,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:55:38,045 INFO L87 Difference]: Start difference. First operand 4694 states and 7666 transitions. Second operand 6 states. [2018-07-24 11:55:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:49,671 INFO L93 Difference]: Finished difference Result 12563 states and 20913 transitions. [2018-07-24 11:55:49,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:55:49,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 11:55:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:49,712 INFO L225 Difference]: With dead ends: 12563 [2018-07-24 11:55:49,713 INFO L226 Difference]: Without dead ends: 7875 [2018-07-24 11:55:49,733 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:55:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2018-07-24 11:55:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 7836. [2018-07-24 11:55:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2018-07-24 11:55:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11625 transitions. [2018-07-24 11:55:49,923 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11625 transitions. Word has length 96 [2018-07-24 11:55:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:49,923 INFO L471 AbstractCegarLoop]: Abstraction has 7836 states and 11625 transitions. [2018-07-24 11:55:49,923 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:55:49,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11625 transitions. [2018-07-24 11:55:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 11:55:49,927 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:49,927 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:55:49,928 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:49,928 INFO L82 PathProgramCache]: Analyzing trace with hash -210490200, now seen corresponding path program 1 times [2018-07-24 11:55:49,928 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:49,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:49,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:49,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:49,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:50,195 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:50,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:55:50,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:50,196 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:55:50,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:55:50,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:55:50,197 INFO L87 Difference]: Start difference. First operand 7836 states and 11625 transitions. Second operand 5 states. [2018-07-24 11:56:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:08,822 INFO L93 Difference]: Finished difference Result 28467 states and 43104 transitions. [2018-07-24 11:56:08,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:56:08,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-07-24 11:56:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:08,921 INFO L225 Difference]: With dead ends: 28467 [2018-07-24 11:56:08,921 INFO L226 Difference]: Without dead ends: 20637 [2018-07-24 11:56:08,962 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 11:56:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20637 states. [2018-07-24 11:56:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20637 to 20438. [2018-07-24 11:56:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20438 states. [2018-07-24 11:56:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20438 states to 20438 states and 27972 transitions. [2018-07-24 11:56:09,702 INFO L78 Accepts]: Start accepts. Automaton has 20438 states and 27972 transitions. Word has length 119 [2018-07-24 11:56:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:09,702 INFO L471 AbstractCegarLoop]: Abstraction has 20438 states and 27972 transitions. [2018-07-24 11:56:09,703 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:56:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20438 states and 27972 transitions. [2018-07-24 11:56:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-24 11:56:09,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:09,710 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:09,710 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1446796980, now seen corresponding path program 1 times [2018-07-24 11:56:09,711 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:09,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:09,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:09,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:09,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:10,247 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:10,247 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 11:56:10,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:10,272 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:10,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:10,817 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:11,494 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:11,494 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:56:11,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:11,519 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:11,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:11,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:12,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:56:12,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:56:12,316 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:56:12,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:56:12,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:56:12,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:56:12,319 INFO L87 Difference]: Start difference. First operand 20438 states and 27972 transitions. Second operand 9 states. [2018-07-24 11:56:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:32,127 INFO L93 Difference]: Finished difference Result 77501 states and 133702 transitions. [2018-07-24 11:56:32,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 11:56:32,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2018-07-24 11:56:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:32,490 INFO L225 Difference]: With dead ends: 77501 [2018-07-24 11:56:32,491 INFO L226 Difference]: Without dead ends: 57069 [2018-07-24 11:56:32,771 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 692 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 11:56:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57069 states. [2018-07-24 11:56:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57069 to 53418. [2018-07-24 11:56:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53418 states. [2018-07-24 11:56:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53418 states to 53418 states and 74261 transitions. [2018-07-24 11:56:34,526 INFO L78 Accepts]: Start accepts. Automaton has 53418 states and 74261 transitions. Word has length 172 [2018-07-24 11:56:34,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:34,527 INFO L471 AbstractCegarLoop]: Abstraction has 53418 states and 74261 transitions. [2018-07-24 11:56:34,527 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:56:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 53418 states and 74261 transitions. [2018-07-24 11:56:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-24 11:56:34,536 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:34,536 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:34,537 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:34,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1197802860, now seen corresponding path program 1 times [2018-07-24 11:56:34,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:34,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:34,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:34,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:34,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:34,817 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:56:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:35,202 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:35,202 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:56:35,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:35,222 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:35,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 11:56:35,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:36,481 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:56:36,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:56:36,482 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:36,483 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:36,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:36,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:56:36,483 INFO L87 Difference]: Start difference. First operand 53418 states and 74261 transitions. Second operand 5 states. [2018-07-24 11:56:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:46,839 INFO L93 Difference]: Finished difference Result 110853 states and 169496 transitions. [2018-07-24 11:56:46,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:56:46,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-07-24 11:56:46,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:47,146 INFO L225 Difference]: With dead ends: 110853 [2018-07-24 11:56:47,146 INFO L226 Difference]: Without dead ends: 57441 [2018-07-24 11:56:47,332 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:56:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57441 states. [2018-07-24 11:56:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57441 to 55631. [2018-07-24 11:56:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55631 states. [2018-07-24 11:56:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55631 states to 55631 states and 75063 transitions. [2018-07-24 11:56:48,647 INFO L78 Accepts]: Start accepts. Automaton has 55631 states and 75063 transitions. Word has length 176 [2018-07-24 11:56:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:48,647 INFO L471 AbstractCegarLoop]: Abstraction has 55631 states and 75063 transitions. [2018-07-24 11:56:48,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:56:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 55631 states and 75063 transitions. [2018-07-24 11:56:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-24 11:56:48,652 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:48,653 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:48,653 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:48,653 INFO L82 PathProgramCache]: Analyzing trace with hash 858293868, now seen corresponding path program 1 times [2018-07-24 11:56:48,653 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:48,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:48,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:48,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:48,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:49,513 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:49,514 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 11:56:49,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:49,527 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:49,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 11:56:49,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:50,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:56:50,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 11:56:50,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:50,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:50,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:50,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:56:50,054 INFO L87 Difference]: Start difference. First operand 55631 states and 75063 transitions. Second operand 5 states. [2018-07-24 11:56:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:59,620 INFO L93 Difference]: Finished difference Result 163315 states and 233280 transitions. [2018-07-24 11:56:59,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:56:59,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-07-24 11:56:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:00,011 INFO L225 Difference]: With dead ends: 163315 [2018-07-24 11:57:00,011 INFO L226 Difference]: Without dead ends: 87513 [2018-07-24 11:57:00,965 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:57:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87513 states. [2018-07-24 11:57:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87513 to 84005. [2018-07-24 11:57:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84005 states. [2018-07-24 11:57:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84005 states to 84005 states and 108966 transitions. [2018-07-24 11:57:02,638 INFO L78 Accepts]: Start accepts. Automaton has 84005 states and 108966 transitions. Word has length 188 [2018-07-24 11:57:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:02,639 INFO L471 AbstractCegarLoop]: Abstraction has 84005 states and 108966 transitions. [2018-07-24 11:57:02,639 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 84005 states and 108966 transitions. [2018-07-24 11:57:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-07-24 11:57:02,647 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:02,647 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:02,648 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:02,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1646706985, now seen corresponding path program 1 times [2018-07-24 11:57:02,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:02,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:02,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:03,260 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:03,260 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:57:03,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:03,280 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:03,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:03,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:04,345 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:04,345 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:57:04,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:04,361 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:04,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:04,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:04,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:57:04,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:57:04,754 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:57:04,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:57:04,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:57:04,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:57:04,756 INFO L87 Difference]: Start difference. First operand 84005 states and 108966 transitions. Second operand 9 states. [2018-07-24 11:57:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:27,563 INFO L93 Difference]: Finished difference Result 223922 states and 357551 transitions. [2018-07-24 11:57:27,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 11:57:27,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 277 [2018-07-24 11:57:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:28,229 INFO L225 Difference]: With dead ends: 223922 [2018-07-24 11:57:28,229 INFO L226 Difference]: Without dead ends: 139923 [2018-07-24 11:57:28,621 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1123 GetRequests, 1106 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:57:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139923 states. [2018-07-24 11:57:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139923 to 138937. [2018-07-24 11:57:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138937 states. [2018-07-24 11:57:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138937 states to 138937 states and 204400 transitions. [2018-07-24 11:57:32,662 INFO L78 Accepts]: Start accepts. Automaton has 138937 states and 204400 transitions. Word has length 277 [2018-07-24 11:57:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:32,662 INFO L471 AbstractCegarLoop]: Abstraction has 138937 states and 204400 transitions. [2018-07-24 11:57:32,662 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:57:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 138937 states and 204400 transitions. [2018-07-24 11:57:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-24 11:57:32,670 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:32,671 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:32,671 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash -358999898, now seen corresponding path program 1 times [2018-07-24 11:57:32,671 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:32,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:32,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:32,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:32,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:33,094 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:33,094 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:57:33,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:33,104 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:33,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:33,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:34,168 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:34,168 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:57:34,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:34,190 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:34,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:34,513 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:34,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:57:34,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 11:57:34,703 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:57:34,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:57:34,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:57:34,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:57:34,705 INFO L87 Difference]: Start difference. First operand 138937 states and 204400 transitions. Second operand 9 states. [2018-07-24 11:58:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:21,538 INFO L93 Difference]: Finished difference Result 351128 states and 749014 transitions. [2018-07-24 11:58:21,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-24 11:58:21,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2018-07-24 11:58:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:22,766 INFO L225 Difference]: With dead ends: 351128 [2018-07-24 11:58:22,766 INFO L226 Difference]: Without dead ends: 212202 [2018-07-24 11:58:23,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1138 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=646, Invalid=2776, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 11:58:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212202 states. [2018-07-24 11:58:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212202 to 206305. [2018-07-24 11:58:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206305 states. [2018-07-24 11:58:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206305 states to 206305 states and 349027 transitions. [2018-07-24 11:58:31,590 INFO L78 Accepts]: Start accepts. Automaton has 206305 states and 349027 transitions. Word has length 280 [2018-07-24 11:58:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:31,591 INFO L471 AbstractCegarLoop]: Abstraction has 206305 states and 349027 transitions. [2018-07-24 11:58:31,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:58:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 206305 states and 349027 transitions. [2018-07-24 11:58:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-24 11:58:31,598 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:31,598 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:31,599 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash -201879695, now seen corresponding path program 1 times [2018-07-24 11:58:31,599 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:31,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:31,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:31,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:31,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:31,906 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:58:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:58:32,386 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:32,386 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 11:58:32,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:32,395 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:32,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 11:58:32,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 11:58:32,833 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:58:32,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 11:58:32,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:32,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:58:32,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:58:32,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:58:32,835 INFO L87 Difference]: Start difference. First operand 206305 states and 349027 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 11:58:38,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:58:38,733 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:58:38,738 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:58:38,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:58:38 BoogieIcfgContainer [2018-07-24 11:58:38,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:58:38,740 INFO L168 Benchmark]: Toolchain (without parser) took 224966.95 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,741 INFO L168 Benchmark]: CDTParser took 0.30 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 11:58:38,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2377.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 275.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,744 INFO L168 Benchmark]: Boogie Preprocessor took 1052.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,745 INFO L168 Benchmark]: RCFGBuilder took 10425.81 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -152.3 MB). Peak memory consumption was 754.4 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,746 INFO L168 Benchmark]: TraceAbstraction took 210829.26 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.6 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -811.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 11:58:38,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 2377.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 275.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1052.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10425.81 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -152.3 MB). Peak memory consumption was 754.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210829.26 ms. Allocated memory was 2.6 GB in the beginning and 5.2 GB in the end (delta: 2.6 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -811.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (206305states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (47779 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 179.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2088 SDtfs, 33522 SDslu, 2386 SDs, 0 SdLazy, 77767 SolverSat, 17202 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 125.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4381 GetRequests, 4226 SyntacticMatches, 14 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206305occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 16122 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 3800 NumberOfCodeBlocks, 3800 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5875 ConstructedInterpolants, 0 QuantifiedInterpolants, 3868122 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4021 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 2330/2794 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label55_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-58-38-771.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label55_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-58-38-771.csv Completed graceful shutdown