java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:31:11,004 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:31:11,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:31:11,018 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:31:11,019 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:31:11,020 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:31:11,021 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:31:11,023 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:31:11,025 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:31:11,026 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:31:11,027 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:31:11,027 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:31:11,028 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:31:11,029 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:31:11,030 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:31:11,031 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:31:11,032 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:31:11,034 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:31:11,036 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:31:11,037 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:31:11,039 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:31:11,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:31:11,042 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:31:11,042 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:31:11,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:31:11,045 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:31:11,046 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:31:11,046 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:31:11,047 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:31:11,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:31:11,050 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:31:11,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:31:11,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:31:11,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:31:11,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:31:11,054 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:31:11,054 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 [2018-08-07 12:31:11,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:31:11,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:31:11,079 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:31:11,080 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:31:11,080 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:31:11,080 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:31:11,080 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:31:11,081 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:31:11,081 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:31:11,081 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:31:11,081 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:31:11,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:31:11,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:31:11,082 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:31:11,083 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:31:11,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:31:11,083 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:31:11,083 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:31:11,084 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:31:11,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:31:11,084 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:31:11,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:31:11,084 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:31:11,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:31:11,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:31:11,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:31:11,085 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:31:11,085 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:31:11,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:31:11,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:31:11,086 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:31:11,086 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:31:11,087 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:31:11,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:31:11,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:31:11,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:31:11,161 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:31:11,161 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:31:11,162 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-08-07 12:31:11,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af66c10e/ab25059e28974dceabd858f50de070dd/FLAG70938f883 [2018-08-07 12:31:12,007 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:31:12,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-08-07 12:31:12,049 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af66c10e/ab25059e28974dceabd858f50de070dd/FLAG70938f883 [2018-08-07 12:31:12,071 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af66c10e/ab25059e28974dceabd858f50de070dd [2018-08-07 12:31:12,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:31:12,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:31:12,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:31:12,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:31:12,096 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:31:12,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:31:12" (1/1) ... [2018-08-07 12:31:12,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d23126d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:12, skipping insertion in model container [2018-08-07 12:31:12,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:31:12" (1/1) ... [2018-08-07 12:31:12,491 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:31:13,761 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:31:13,781 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:31:14,983 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:31:15,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15 WrapperNode [2018-08-07 12:31:15,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:31:15,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:31:15,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:31:15,393 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:31:15,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:15,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:15,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:31:15,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:31:15,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:31:15,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:31:16,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:16,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:16,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:16,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:16,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:16,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:17,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (1/1) ... [2018-08-07 12:31:17,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:31:17,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:31:17,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:31:17,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:31:17,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (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 [2018-08-07 12:31:17,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:31:17,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:31:17,148 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 [2018-08-07 12:31:17,148 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 [2018-08-07 12:31:17,148 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 [2018-08-07 12:31:17,148 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 [2018-08-07 12:31:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:31:17,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:31:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 12:31:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 12:31:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:31:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:31:17,149 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 [2018-08-07 12:31:17,149 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 [2018-08-07 12:31:29,834 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:31:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:31:29 BoogieIcfgContainer [2018-08-07 12:31:29,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:31:29,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:31:29,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:31:29,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:31:29,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:31:12" (1/3) ... [2018-08-07 12:31:29,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325d4b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:31:29, skipping insertion in model container [2018-08-07 12:31:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:15" (2/3) ... [2018-08-07 12:31:29,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325d4b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:31:29, skipping insertion in model container [2018-08-07 12:31:29,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:31:29" (3/3) ... [2018-08-07 12:31:29,843 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-08-07 12:31:29,853 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:31:29,865 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:31:29,931 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:31:29,932 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:31:29,932 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:31:29,932 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:31:29,932 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:31:29,932 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:31:29,932 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:31:29,933 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:31:29,933 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:31:29,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-08-07 12:31:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-08-07 12:31:29,984 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:31:29,986 INFO L376 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] [2018-08-07 12:31:29,987 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:31:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1540748465, now seen corresponding path program 1 times [2018-08-07 12:31:29,996 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:31:30,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:30,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:31:30,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:30,051 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:31:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:31:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:31:30,444 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:31:30,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:31:30,445 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:31:30,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:31:30,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:31:30,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:31:30,469 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-08-07 12:31:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:31:47,220 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-08-07 12:31:47,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:31:47,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-08-07 12:31:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:31:47,272 INFO L225 Difference]: With dead ends: 4105 [2018-08-07 12:31:47,272 INFO L226 Difference]: Without dead ends: 2979 [2018-08-07 12:31:47,285 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:31:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-08-07 12:31:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-08-07 12:31:47,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-08-07 12:31:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-08-07 12:31:47,491 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 39 [2018-08-07 12:31:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:31:47,492 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-08-07 12:31:47,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:31:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-08-07 12:31:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-08-07 12:31:47,499 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:31:47,500 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:31:47,500 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:31:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1284679823, now seen corresponding path program 1 times [2018-08-07 12:31:47,501 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:31:47,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:47,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:31:47,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:47,502 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:31:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:31:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:31:47,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:31:47,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:31:47,886 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:31:47,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:31:47,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:31:47,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:31:47,889 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-08-07 12:32:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:06,013 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-08-07 12:32:06,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:32:06,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-08-07 12:32:06,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:06,061 INFO L225 Difference]: With dead ends: 10635 [2018-08-07 12:32:06,062 INFO L226 Difference]: Without dead ends: 7792 [2018-08-07 12:32:06,082 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:32:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-08-07 12:32:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-08-07 12:32:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-08-07 12:32:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-08-07 12:32:06,326 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 110 [2018-08-07 12:32:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:06,327 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-08-07 12:32:06,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-08-07 12:32:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-08-07 12:32:06,331 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:06,331 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:06,331 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:32:06,332 INFO L82 PathProgramCache]: Analyzing trace with hash 653214236, now seen corresponding path program 1 times [2018-08-07 12:32:06,332 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:06,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:06,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:06,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:06,333 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:06,548 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:32:06,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:32:06,548 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:06,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:32:06,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:32:06,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:32:06,550 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-08-07 12:32:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:20,875 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-08-07 12:32:20,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:32:20,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-08-07 12:32:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:20,957 INFO L225 Difference]: With dead ends: 25316 [2018-08-07 12:32:20,958 INFO L226 Difference]: Without dead ends: 17593 [2018-08-07 12:32:21,003 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:32:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-08-07 12:32:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-08-07 12:32:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-08-07 12:32:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-08-07 12:32:21,475 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 113 [2018-08-07 12:32:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:21,475 INFO L480 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-08-07 12:32:21,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-08-07 12:32:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-08-07 12:32:21,480 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:21,484 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:21,484 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:32:21,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2096792784, now seen corresponding path program 1 times [2018-08-07 12:32:21,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:21,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:21,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:21,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:21,486 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:21,749 WARN L170 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:32:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:21,786 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:32:21,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:32:21,787 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:21,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:32:21,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:32:21,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:32:21,788 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-08-07 12:32:32,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:32,319 INFO L93 Difference]: Finished difference Result 45753 states and 75639 transitions. [2018-08-07 12:32:32,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:32:32,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-08-07 12:32:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:32,466 INFO L225 Difference]: With dead ends: 45753 [2018-08-07 12:32:32,467 INFO L226 Difference]: Without dead ends: 28241 [2018-08-07 12:32:32,525 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:32:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28241 states. [2018-08-07 12:32:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28241 to 28077. [2018-08-07 12:32:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28077 states. [2018-08-07 12:32:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28077 states to 28077 states and 42424 transitions. [2018-08-07 12:32:33,291 INFO L78 Accepts]: Start accepts. Automaton has 28077 states and 42424 transitions. Word has length 123 [2018-08-07 12:32:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:33,292 INFO L480 AbstractCegarLoop]: Abstraction has 28077 states and 42424 transitions. [2018-08-07 12:32:33,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 28077 states and 42424 transitions. [2018-08-07 12:32:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-08-07 12:32:33,297 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:33,297 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:33,298 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:32:33,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1240376352, now seen corresponding path program 1 times [2018-08-07 12:32:33,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:33,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:33,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:33,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:33,299 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:33,635 WARN L170 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:32:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:34,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:32:34,333 INFO L194 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 [2018-08-07 12:32:34,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:34,354 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:32:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:34,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:32:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-08-07 12:32:34,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:32:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-08-07 12:32:35,529 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:32:35,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-08-07 12:32:35,529 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:35,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:32:35,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:32:35,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:32:35,534 INFO L87 Difference]: Start difference. First operand 28077 states and 42424 transitions. Second operand 4 states. [2018-08-07 12:32:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:50,132 INFO L93 Difference]: Finished difference Result 80800 states and 131856 transitions. [2018-08-07 12:32:50,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:32:50,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-08-07 12:32:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:50,423 INFO L225 Difference]: With dead ends: 80800 [2018-08-07 12:32:50,423 INFO L226 Difference]: Without dead ends: 52729 [2018-08-07 12:32:50,641 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:32:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52729 states. [2018-08-07 12:32:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52729 to 52723. [2018-08-07 12:32:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52723 states. [2018-08-07 12:32:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52723 states to 52723 states and 82780 transitions. [2018-08-07 12:32:52,484 INFO L78 Accepts]: Start accepts. Automaton has 52723 states and 82780 transitions. Word has length 140 [2018-08-07 12:32:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:52,485 INFO L480 AbstractCegarLoop]: Abstraction has 52723 states and 82780 transitions. [2018-08-07 12:32:52,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:32:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 52723 states and 82780 transitions. [2018-08-07 12:32:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-08-07 12:32:52,496 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:52,496 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:32:52,497 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:32:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash 113966859, now seen corresponding path program 1 times [2018-08-07 12:32:52,498 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:52,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:52,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:52,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:52,499 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 64 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:32:52,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:32:52,823 INFO L194 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 [2018-08-07 12:32:52,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:52,838 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:32:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:52,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:32:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-08-07 12:32:53,117 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:32:53,320 WARN L170 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 12:32:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 64 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:32:53,655 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:32:53,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-08-07 12:32:53,655 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:53,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:32:53,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:32:53,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:32:53,657 INFO L87 Difference]: Start difference. First operand 52723 states and 82780 transitions. Second operand 5 states. [2018-08-07 12:33:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:05,487 INFO L93 Difference]: Finished difference Result 144322 states and 248047 transitions. [2018-08-07 12:33:05,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:33:05,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2018-08-07 12:33:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:05,902 INFO L225 Difference]: With dead ends: 144322 [2018-08-07 12:33:05,903 INFO L226 Difference]: Without dead ends: 91605 [2018-08-07 12:33:06,015 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:33:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91605 states. [2018-08-07 12:33:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91605 to 91258. [2018-08-07 12:33:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91258 states. [2018-08-07 12:33:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91258 states to 91258 states and 137579 transitions. [2018-08-07 12:33:07,841 INFO L78 Accepts]: Start accepts. Automaton has 91258 states and 137579 transitions. Word has length 189 [2018-08-07 12:33:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:07,841 INFO L480 AbstractCegarLoop]: Abstraction has 91258 states and 137579 transitions. [2018-08-07 12:33:07,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:33:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 91258 states and 137579 transitions. [2018-08-07 12:33:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-08-07 12:33:07,851 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:07,851 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:33:07,852 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:33:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash 926001227, now seen corresponding path program 1 times [2018-08-07 12:33:07,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:07,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:07,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:07,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:07,853 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 64 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:08,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:33:08,188 INFO L194 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 [2018-08-07 12:33:08,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:08,205 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:33:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:08,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:33:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-08-07 12:33:08,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:33:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 64 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:08,971 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:33:08,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-08-07 12:33:08,972 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:08,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:33:08,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:33:08,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:33:08,973 INFO L87 Difference]: Start difference. First operand 91258 states and 137579 transitions. Second operand 5 states. [2018-08-07 12:33:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:25,916 INFO L93 Difference]: Finished difference Result 233598 states and 387046 transitions. [2018-08-07 12:33:25,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:33:25,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2018-08-07 12:33:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:26,543 INFO L225 Difference]: With dead ends: 233598 [2018-08-07 12:33:26,543 INFO L226 Difference]: Without dead ends: 142346 [2018-08-07 12:33:26,709 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:33:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142346 states. [2018-08-07 12:33:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142346 to 141820. [2018-08-07 12:33:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141820 states. [2018-08-07 12:33:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141820 states to 141820 states and 228654 transitions. [2018-08-07 12:33:30,847 INFO L78 Accepts]: Start accepts. Automaton has 141820 states and 228654 transitions. Word has length 221 [2018-08-07 12:33:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:30,847 INFO L480 AbstractCegarLoop]: Abstraction has 141820 states and 228654 transitions. [2018-08-07 12:33:30,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:33:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 141820 states and 228654 transitions. [2018-08-07 12:33:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-08-07 12:33:30,859 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:30,860 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:33:30,860 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:33:30,860 INFO L82 PathProgramCache]: Analyzing trace with hash -520002859, now seen corresponding path program 1 times [2018-08-07 12:33:30,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:30,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:30,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:30,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:30,862 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:31,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:33:31,226 INFO L194 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 [2018-08-07 12:33:31,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:31,237 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:33:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:31,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:33:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-08-07 12:33:31,407 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:33:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:33:31,628 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:33:31,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 7 [2018-08-07 12:33:31,628 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:31,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:33:31,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:33:31,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:33:31,629 INFO L87 Difference]: Start difference. First operand 141820 states and 228654 transitions. Second operand 3 states. [2018-08-07 12:33:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:41,704 INFO L93 Difference]: Finished difference Result 307034 states and 504077 transitions. [2018-08-07 12:33:41,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:33:41,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-08-07 12:33:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:42,379 INFO L225 Difference]: With dead ends: 307034 [2018-08-07 12:33:42,380 INFO L226 Difference]: Without dead ends: 166024 [2018-08-07 12:33:42,649 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:33:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166024 states. [2018-08-07 12:33:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166024 to 161192. [2018-08-07 12:33:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161192 states. [2018-08-07 12:33:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161192 states to 161192 states and 246026 transitions. [2018-08-07 12:33:46,461 INFO L78 Accepts]: Start accepts. Automaton has 161192 states and 246026 transitions. Word has length 244 [2018-08-07 12:33:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:46,461 INFO L480 AbstractCegarLoop]: Abstraction has 161192 states and 246026 transitions. [2018-08-07 12:33:46,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:33:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 161192 states and 246026 transitions. [2018-08-07 12:33:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-08-07 12:33:46,474 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:46,475 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:33:46,475 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:33:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 704561342, now seen corresponding path program 1 times [2018-08-07 12:33:46,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:46,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:46,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:46,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:46,476 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 96 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-08-07 12:33:46,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:33:46,758 INFO L194 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 [2018-08-07 12:33:46,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:46,767 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:33:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:46,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:33:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-08-07 12:33:48,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:33:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 96 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-08-07 12:33:48,638 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:33:48,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-08-07 12:33:48,638 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:48,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:33:48,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:33:48,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:33:48,640 INFO L87 Difference]: Start difference. First operand 161192 states and 246026 transitions. Second operand 5 states. [2018-08-07 12:34:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:34:11,759 INFO L93 Difference]: Finished difference Result 395350 states and 622563 transitions. [2018-08-07 12:34:11,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:34:11,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-08-07 12:34:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:34:12,686 INFO L225 Difference]: With dead ends: 395350 [2018-08-07 12:34:12,686 INFO L226 Difference]: Without dead ends: 234968 [2018-08-07 12:34:13,414 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 529 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:34:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234968 states. [2018-08-07 12:34:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234968 to 233005. [2018-08-07 12:34:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233005 states. [2018-08-07 12:34:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233005 states to 233005 states and 335312 transitions. [2018-08-07 12:34:17,431 INFO L78 Accepts]: Start accepts. Automaton has 233005 states and 335312 transitions. Word has length 267 [2018-08-07 12:34:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:34:17,431 INFO L480 AbstractCegarLoop]: Abstraction has 233005 states and 335312 transitions. [2018-08-07 12:34:17,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:34:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 233005 states and 335312 transitions. [2018-08-07 12:34:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-08-07 12:34:17,442 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:34:17,442 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:34:17,442 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:34:17,442 INFO L82 PathProgramCache]: Analyzing trace with hash 348217035, now seen corresponding path program 1 times [2018-08-07 12:34:17,443 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:34:17,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:17,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:17,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:17,444 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:34:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:17,783 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:17,783 INFO L194 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 [2018-08-07 12:34:17,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:17,790 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:17,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:18,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:19,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:19,071 INFO L194 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 [2018-08-07 12:34:19,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:19,086 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:19,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:19,412 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:19,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:34:19,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-08-07 12:34:19,550 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:34:19,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:34:19,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:34:19,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:34:19,551 INFO L87 Difference]: Start difference. First operand 233005 states and 335312 transitions. Second operand 9 states. [2018-08-07 12:34:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:34:34,244 INFO L93 Difference]: Finished difference Result 469573 states and 694367 transitions. [2018-08-07 12:34:34,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 12:34:34,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2018-08-07 12:34:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:34:35,029 INFO L225 Difference]: With dead ends: 469573 [2018-08-07 12:34:35,029 INFO L226 Difference]: Without dead ends: 237378 [2018-08-07 12:34:35,381 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1081 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-08-07 12:34:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237378 states. [2018-08-07 12:34:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237378 to 231726. [2018-08-07 12:34:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231726 states. [2018-08-07 12:34:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231726 states to 231726 states and 294911 transitions. [2018-08-07 12:34:39,670 INFO L78 Accepts]: Start accepts. Automaton has 231726 states and 294911 transitions. Word has length 272 [2018-08-07 12:34:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:34:39,670 INFO L480 AbstractCegarLoop]: Abstraction has 231726 states and 294911 transitions. [2018-08-07 12:34:39,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:34:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 231726 states and 294911 transitions. [2018-08-07 12:34:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-08-07 12:34:39,688 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:34:39,689 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:34:39,689 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:34:39,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1446232164, now seen corresponding path program 1 times [2018-08-07 12:34:39,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:34:39,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:39,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:39,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:40,540 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:34:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-08-07 12:34:40,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:40,849 INFO L194 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 [2018-08-07 12:34:40,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:40,865 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:41,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 57 proven. 45 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-08-07 12:34:41,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-08-07 12:34:41,724 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:34:41,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 13 [2018-08-07 12:34:41,724 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:34:41,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 12:34:41,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 12:34:41,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:34:41,726 INFO L87 Difference]: Start difference. First operand 231726 states and 294911 transitions. Second operand 7 states. Received shutdown request... [2018-08-07 12:34:52,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:34:52,371 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:34:52,375 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:34:52,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:34:52 BoogieIcfgContainer [2018-08-07 12:34:52,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:34:52,377 INFO L168 Benchmark]: Toolchain (without parser) took 220293.68 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.4 GB). Peak memory consumption was 994.6 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,378 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-08-07 12:34:52,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3304.22 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 338.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,380 INFO L168 Benchmark]: Boogie Preprocessor took 1341.77 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,381 INFO L168 Benchmark]: RCFGBuilder took 12761.58 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 183.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 59.1 MB). Peak memory consumption was 749.2 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,382 INFO L168 Benchmark]: TraceAbstraction took 202540.05 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 683.9 MB. Max. memory is 7.1 GB. [2018-08-07 12:34:52,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3304.22 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 338.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1341.77 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12761.58 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 183.5 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 59.1 MB). Peak memory consumption was 749.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202540.05 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 683.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (231726states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement), while ReachableStatesComputation was computing reachable states (49865 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 202.4s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 167.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5252 SDtfs, 41240 SDslu, 4590 SDs, 0 SdLazy, 58866 SolverSat, 16045 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 120.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4052 GetRequests, 3941 SyntacticMatches, 14 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233005occurred 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: 21.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 13758 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 4063 NumberOfCodeBlocks, 4063 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6011 ConstructedInterpolants, 21 QuantifiedInterpolants, 4043265 SizeOfPredicates, 28 NumberOfNonLiveVariables, 3753 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 3796/4486 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/Problem13_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-34-52-406.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-34-52-406.csv Completed graceful shutdown