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/Problem18_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:35:23,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:35:23,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:35:23,961 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:35:23,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:35:23,962 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:35:23,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:35:23,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:35:23,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:35:23,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:35:23,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:35:23,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:35:23,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:35:23,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:35:23,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:35:23,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:35:23,974 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:35:23,976 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:35:23,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:35:23,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:35:23,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:35:23,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:35:23,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:35:23,985 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:35:23,986 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:35:23,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:35:23,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:35:23,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:35:23,990 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:35:23,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:35:23,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:35:23,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:35:23,992 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:35:23,992 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:35:23,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:35:23,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:35:23,995 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 [2018-09-10 12:35:24,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:35:24,011 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:35:24,012 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:35:24,012 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:35:24,012 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:35:24,013 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:35:24,013 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:35:24,013 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:35:24,013 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:35:24,013 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:35:24,013 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:35:24,014 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:35:24,014 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:35:24,015 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:35:24,015 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:35:24,015 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:35:24,015 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:35:24,015 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:35:24,016 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:35:24,016 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:35:24,016 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:35:24,016 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:35:24,017 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:35:24,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:35:24,017 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:35:24,017 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:35:24,017 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:35:24,018 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:35:24,018 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:35:24,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:35:24,018 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:35:24,019 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:35:24,019 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:35:24,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:35:24,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:35:24,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:35:24,107 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:35:24,108 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:35:24,108 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label15_true-unreach-call.c [2018-09-10 12:35:24,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fee2df8e/20261289f2aa4da5843acfb4797743b7/FLAG30f5a38f1 [2018-09-10 12:35:24,886 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:35:24,887 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label15_true-unreach-call.c [2018-09-10 12:35:24,927 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fee2df8e/20261289f2aa4da5843acfb4797743b7/FLAG30f5a38f1 [2018-09-10 12:35:24,949 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fee2df8e/20261289f2aa4da5843acfb4797743b7 [2018-09-10 12:35:24,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:35:24,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:35:24,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:35:24,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:35:24,979 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:35:24,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:35:24" (1/1) ... [2018-09-10 12:35:24,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10421fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:24, skipping insertion in model container [2018-09-10 12:35:24,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:35:24" (1/1) ... [2018-09-10 12:35:25,308 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:35:26,063 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:35:26,087 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:35:26,863 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:35:27,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27 WrapperNode [2018-09-10 12:35:27,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:35:27,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:35:27,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:35:27,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:35:27,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:35:27,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:35:27,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:35:27,230 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:35:27,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (1/1) ... [2018-09-10 12:35:27,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:35:27,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:35:27,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:35:27,856 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:35:27,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (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 [2018-09-10 12:35:27,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:35:27,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:35:27,929 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 [2018-09-10 12:35:27,929 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 [2018-09-10 12:35:27,929 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 [2018-09-10 12:35:27,929 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 [2018-09-10 12:35:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:35:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:35:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:35:27,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:35:27,930 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 [2018-09-10 12:35:27,930 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 [2018-09-10 12:35:35,769 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:35:35,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:35:35 BoogieIcfgContainer [2018-09-10 12:35:35,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:35:35,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:35:35,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:35:35,776 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:35:35,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:35:24" (1/3) ... [2018-09-10 12:35:35,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457c6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:35:35, skipping insertion in model container [2018-09-10 12:35:35,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:35:27" (2/3) ... [2018-09-10 12:35:35,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457c6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:35:35, skipping insertion in model container [2018-09-10 12:35:35,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:35:35" (3/3) ... [2018-09-10 12:35:35,780 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label15_true-unreach-call.c [2018-09-10 12:35:35,791 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:35:35,801 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:35:35,866 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:35:35,867 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:35:35,867 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:35:35,867 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:35:35,867 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:35:35,867 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:35:35,868 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:35:35,868 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:35:35,868 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:35:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-10 12:35:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-10 12:35:35,920 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:35:35,924 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, 1, 1, 1] [2018-09-10 12:35:35,925 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]=== [2018-09-10 12:35:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1834996916, now seen corresponding path program 1 times [2018-09-10 12:35:35,936 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:35:35,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:35:35,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:35:35,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:35:35,991 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:35:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:35:36,416 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:35:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:35:36,485 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:35:36,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:35:36,485 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:35:36,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:35:36,508 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:35:36,509 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:35:36,512 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-10 12:35:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:35:42,591 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-10 12:35:42,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:35:42,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-09-10 12:35:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:35:42,626 INFO L225 Difference]: With dead ends: 2251 [2018-09-10 12:35:42,626 INFO L226 Difference]: Without dead ends: 1474 [2018-09-10 12:35:42,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:35:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-10 12:35:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-10 12:35:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-10 12:35:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-09-10 12:35:42,842 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 42 [2018-09-10 12:35:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:35:42,843 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-09-10 12:35:42,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:35:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-09-10 12:35:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-10 12:35:42,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:35:42,855 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, 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] [2018-09-10 12:35:42,856 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]=== [2018-09-10 12:35:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash 551165417, now seen corresponding path program 1 times [2018-09-10 12:35:42,856 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:35:42,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:35:42,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:35:42,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:35:42,861 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:35:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:35:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:35:43,193 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:35:43,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:35:43,194 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:35:43,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:35:43,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:35:43,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:35:43,197 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 6 states. [2018-09-10 12:35:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:35:59,777 INFO L93 Difference]: Finished difference Result 5916 states and 11168 transitions. [2018-09-10 12:35:59,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:35:59,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-09-10 12:35:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:35:59,813 INFO L225 Difference]: With dead ends: 5916 [2018-09-10 12:35:59,813 INFO L226 Difference]: Without dead ends: 4448 [2018-09-10 12:35:59,830 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:35:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2018-09-10 12:35:59,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4408. [2018-09-10 12:35:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4408 states. [2018-09-10 12:35:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6587 transitions. [2018-09-10 12:35:59,991 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6587 transitions. Word has length 113 [2018-09-10 12:35:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:35:59,992 INFO L480 AbstractCegarLoop]: Abstraction has 4408 states and 6587 transitions. [2018-09-10 12:35:59,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:35:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6587 transitions. [2018-09-10 12:35:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 12:35:59,997 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:35:59,998 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, 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] [2018-09-10 12:35:59,998 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]=== [2018-09-10 12:35:59,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1413824026, now seen corresponding path program 1 times [2018-09-10 12:35:59,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:36:00,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:00,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:00,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:00,000 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:36:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:00,336 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:36:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:00,840 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:36:00,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:36:00,840 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:36:00,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:36:00,841 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:36:00,841 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:36:00,842 INFO L87 Difference]: Start difference. First operand 4408 states and 6587 transitions. Second operand 6 states. [2018-09-10 12:36:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:36:07,402 INFO L93 Difference]: Finished difference Result 12743 states and 20240 transitions. [2018-09-10 12:36:07,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:36:07,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 12:36:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:36:07,463 INFO L225 Difference]: With dead ends: 12743 [2018-09-10 12:36:07,463 INFO L226 Difference]: Without dead ends: 8341 [2018-09-10 12:36:07,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:36:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2018-09-10 12:36:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8214. [2018-09-10 12:36:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8214 states. [2018-09-10 12:36:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11805 transitions. [2018-09-10 12:36:07,727 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11805 transitions. Word has length 116 [2018-09-10 12:36:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:36:07,728 INFO L480 AbstractCegarLoop]: Abstraction has 8214 states and 11805 transitions. [2018-09-10 12:36:07,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:36:07,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11805 transitions. [2018-09-10 12:36:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-10 12:36:07,731 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:36:07,732 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, 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] [2018-09-10 12:36:07,732 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]=== [2018-09-10 12:36:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1893435446, now seen corresponding path program 1 times [2018-09-10 12:36:07,732 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:36:07,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:07,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:07,734 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:36:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:08,041 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:36:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:08,353 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:36:08,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:36:08,353 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:36:08,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:36:08,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:36:08,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:36:08,354 INFO L87 Difference]: Start difference. First operand 8214 states and 11805 transitions. Second operand 6 states. [2018-09-10 12:36:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:36:15,208 INFO L93 Difference]: Finished difference Result 20977 states and 30660 transitions. [2018-09-10 12:36:15,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:36:15,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-10 12:36:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:36:15,290 INFO L225 Difference]: With dead ends: 20977 [2018-09-10 12:36:15,290 INFO L226 Difference]: Without dead ends: 12769 [2018-09-10 12:36:15,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:36:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12769 states. [2018-09-10 12:36:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12769 to 12706. [2018-09-10 12:36:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12706 states. [2018-09-10 12:36:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12706 states to 12706 states and 16774 transitions. [2018-09-10 12:36:15,631 INFO L78 Accepts]: Start accepts. Automaton has 12706 states and 16774 transitions. Word has length 150 [2018-09-10 12:36:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:36:15,632 INFO L480 AbstractCegarLoop]: Abstraction has 12706 states and 16774 transitions. [2018-09-10 12:36:15,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:36:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12706 states and 16774 transitions. [2018-09-10 12:36:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-10 12:36:15,639 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:36:15,639 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:36:15,640 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]=== [2018-09-10 12:36:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash -80150437, now seen corresponding path program 1 times [2018-09-10 12:36:15,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:36:15,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:15,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:15,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:15,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:36:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:15,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:36:15,912 INFO L197 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 [2018-09-10 12:36:15,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:15,923 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:36:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:16,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:36:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:16,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:36:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:16,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:36:16,873 INFO L197 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 [2018-09-10 12:36:16,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:16,894 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:36:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:17,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:36:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:17,306 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:36:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:17,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:36:17,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:36:17,546 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:36:17,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:36:17,547 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:36:17,548 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:36:17,548 INFO L87 Difference]: Start difference. First operand 12706 states and 16774 transitions. Second operand 9 states. [2018-09-10 12:36:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:36:33,176 INFO L93 Difference]: Finished difference Result 44124 states and 64608 transitions. [2018-09-10 12:36:33,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:36:33,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2018-09-10 12:36:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:36:33,400 INFO L225 Difference]: With dead ends: 44124 [2018-09-10 12:36:33,401 INFO L226 Difference]: Without dead ends: 31382 [2018-09-10 12:36:33,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 913 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:36:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31382 states. [2018-09-10 12:36:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31382 to 31289. [2018-09-10 12:36:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31289 states. [2018-09-10 12:36:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31289 states to 31289 states and 41523 transitions. [2018-09-10 12:36:34,891 INFO L78 Accepts]: Start accepts. Automaton has 31289 states and 41523 transitions. Word has length 229 [2018-09-10 12:36:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:36:34,891 INFO L480 AbstractCegarLoop]: Abstraction has 31289 states and 41523 transitions. [2018-09-10 12:36:34,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:36:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 31289 states and 41523 transitions. [2018-09-10 12:36:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-09-10 12:36:34,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:36:34,899 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:36:34,899 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]=== [2018-09-10 12:36:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash 340584935, now seen corresponding path program 1 times [2018-09-10 12:36:34,900 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:36:34,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:34,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:34,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:34,902 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:36:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:35,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:36:35,458 INFO L197 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 [2018-09-10 12:36:35,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:35,476 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:36:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:35,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:36:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:36,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:36:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:36,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:36:36,607 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:36:36,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:36,625 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:36:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:36,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:36:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:36:37,046 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:36:37,200 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:36:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 12:36:37,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:36:37,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:36:37,778 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:36:37,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:36:37,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:36:37,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:36:37,785 INFO L87 Difference]: Start difference. First operand 31289 states and 41523 transitions. Second operand 9 states. [2018-09-10 12:36:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:36:50,881 INFO L93 Difference]: Finished difference Result 69637 states and 104566 transitions. [2018-09-10 12:36:50,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:36:50,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2018-09-10 12:36:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:36:51,171 INFO L225 Difference]: With dead ends: 69637 [2018-09-10 12:36:51,172 INFO L226 Difference]: Without dead ends: 36200 [2018-09-10 12:36:51,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 953 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:36:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36200 states. [2018-09-10 12:36:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36200 to 35828. [2018-09-10 12:36:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35828 states. [2018-09-10 12:36:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35828 states to 35828 states and 49001 transitions. [2018-09-10 12:36:52,955 INFO L78 Accepts]: Start accepts. Automaton has 35828 states and 49001 transitions. Word has length 239 [2018-09-10 12:36:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:36:52,956 INFO L480 AbstractCegarLoop]: Abstraction has 35828 states and 49001 transitions. [2018-09-10 12:36:52,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:36:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 35828 states and 49001 transitions. [2018-09-10 12:36:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-09-10 12:36:52,965 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:36:52,965 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:36:52,965 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]=== [2018-09-10 12:36:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash 134030165, now seen corresponding path program 1 times [2018-09-10 12:36:52,966 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:36:52,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:52,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:52,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:36:52,967 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:36:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:53,669 WARN L175 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:36:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 206 proven. 87 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-10 12:36:54,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:36:54,230 INFO L197 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 [2018-09-10 12:36:54,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:36:54,240 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:36:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:36:54,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:36:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:36:54,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:36:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:36:54,588 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:36:54,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-09-10 12:36:54,588 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:36:54,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:36:54,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:36:54,589 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:36:54,590 INFO L87 Difference]: Start difference. First operand 35828 states and 49001 transitions. Second operand 3 states. [2018-09-10 12:37:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:37:01,054 INFO L93 Difference]: Finished difference Result 98576 states and 142401 transitions. [2018-09-10 12:37:01,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:37:01,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2018-09-10 12:37:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:37:01,530 INFO L225 Difference]: With dead ends: 98576 [2018-09-10 12:37:01,531 INFO L226 Difference]: Without dead ends: 62759 [2018-09-10 12:37:01,839 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 668 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:37:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62759 states. [2018-09-10 12:37:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62759 to 62739. [2018-09-10 12:37:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62739 states. [2018-09-10 12:37:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62739 states to 62739 states and 85121 transitions. [2018-09-10 12:37:03,500 INFO L78 Accepts]: Start accepts. Automaton has 62739 states and 85121 transitions. Word has length 335 [2018-09-10 12:37:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:37:03,500 INFO L480 AbstractCegarLoop]: Abstraction has 62739 states and 85121 transitions. [2018-09-10 12:37:03,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:37:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 62739 states and 85121 transitions. [2018-09-10 12:37:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 12:37:03,511 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:37:03,511 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, 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, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:37:03,512 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]=== [2018-09-10 12:37:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1900479035, now seen corresponding path program 1 times [2018-09-10 12:37:03,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:37:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:03,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:03,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:37:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 206 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:37:05,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:37:05,318 INFO L197 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 [2018-09-10 12:37:05,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:05,326 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:37:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:05,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:37:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-09-10 12:37:05,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:37:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-09-10 12:37:05,618 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:37:05,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 14 [2018-09-10 12:37:05,619 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:37:05,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:37:05,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:37:05,620 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:37:05,620 INFO L87 Difference]: Start difference. First operand 62739 states and 85121 transitions. Second operand 3 states. [2018-09-10 12:37:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:37:12,437 INFO L93 Difference]: Finished difference Result 150926 states and 215907 transitions. [2018-09-10 12:37:12,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:37:12,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2018-09-10 12:37:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:37:13,887 INFO L225 Difference]: With dead ends: 150926 [2018-09-10 12:37:13,888 INFO L226 Difference]: Without dead ends: 88198 [2018-09-10 12:37:14,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:37:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88198 states. [2018-09-10 12:37:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88198 to 88196. [2018-09-10 12:37:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88196 states. [2018-09-10 12:37:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88196 states to 88196 states and 122673 transitions. [2018-09-10 12:37:16,495 INFO L78 Accepts]: Start accepts. Automaton has 88196 states and 122673 transitions. Word has length 343 [2018-09-10 12:37:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:37:16,496 INFO L480 AbstractCegarLoop]: Abstraction has 88196 states and 122673 transitions. [2018-09-10 12:37:16,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:37:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 88196 states and 122673 transitions. [2018-09-10 12:37:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-10 12:37:16,510 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:37:16,510 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, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:37:16,511 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]=== [2018-09-10 12:37:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1554477738, now seen corresponding path program 1 times [2018-09-10 12:37:16,511 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:37:16,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:16,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:16,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:16,512 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:37:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 206 proven. 106 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-10 12:37:18,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:37:18,163 INFO L197 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 [2018-09-10 12:37:18,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:18,172 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:37:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:18,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:37:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 12:37:19,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:37:19,242 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:37:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 12:37:19,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:37:19,645 INFO L197 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 [2018-09-10 12:37:19,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:19,660 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:37:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:19,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:37:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 12:37:20,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:37:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-10 12:37:20,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:37:20,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 22 [2018-09-10 12:37:20,284 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:37:20,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-10 12:37:20,286 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-10 12:37:20,286 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:37:20,286 INFO L87 Difference]: Start difference. First operand 88196 states and 122673 transitions. Second operand 15 states. [2018-09-10 12:37:43,496 WARN L175 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2018-09-10 12:37:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:37:47,660 INFO L93 Difference]: Finished difference Result 176816 states and 262695 transitions. [2018-09-10 12:37:47,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 12:37:47,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 370 [2018-09-10 12:37:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:37:48,629 INFO L225 Difference]: With dead ends: 176816 [2018-09-10 12:37:48,629 INFO L226 Difference]: Without dead ends: 86322 [2018-09-10 12:37:49,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1549 GetRequests, 1495 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=527, Invalid=2443, Unknown=0, NotChecked=0, Total=2970 [2018-09-10 12:37:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86322 states. [2018-09-10 12:37:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86322 to 83433. [2018-09-10 12:37:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83433 states. [2018-09-10 12:37:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83433 states to 83433 states and 105244 transitions. [2018-09-10 12:37:51,021 INFO L78 Accepts]: Start accepts. Automaton has 83433 states and 105244 transitions. Word has length 370 [2018-09-10 12:37:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:37:51,022 INFO L480 AbstractCegarLoop]: Abstraction has 83433 states and 105244 transitions. [2018-09-10 12:37:51,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-10 12:37:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 83433 states and 105244 transitions. [2018-09-10 12:37:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-09-10 12:37:51,037 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:37:51,037 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:37:51,038 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]=== [2018-09-10 12:37:51,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1468638803, now seen corresponding path program 1 times [2018-09-10 12:37:51,038 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:37:51,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:51,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:37:51,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:37:51,039 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:37:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:37:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2018-09-10 12:37:52,080 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:37:52,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:37:52,080 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:37:52,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:37:52,081 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:37:52,081 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:37:52,081 INFO L87 Difference]: Start difference. First operand 83433 states and 105244 transitions. Second operand 4 states. [2018-09-10 12:38:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:38:03,568 INFO L93 Difference]: Finished difference Result 183351 states and 235827 transitions. [2018-09-10 12:38:03,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:38:03,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2018-09-10 12:38:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:38:03,866 INFO L225 Difference]: With dead ends: 183351 [2018-09-10 12:38:03,867 INFO L226 Difference]: Without dead ends: 96435 [2018-09-10 12:38:04,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:38:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96435 states. [2018-09-10 12:38:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96435 to 96392. [2018-09-10 12:38:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96392 states. [2018-09-10 12:38:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96392 states to 96392 states and 120318 transitions. [2018-09-10 12:38:06,076 INFO L78 Accepts]: Start accepts. Automaton has 96392 states and 120318 transitions. Word has length 465 [2018-09-10 12:38:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:38:06,077 INFO L480 AbstractCegarLoop]: Abstraction has 96392 states and 120318 transitions. [2018-09-10 12:38:06,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:38:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 96392 states and 120318 transitions. [2018-09-10 12:38:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-09-10 12:38:06,100 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:38:06,101 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:38:06,101 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]=== [2018-09-10 12:38:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash -847120218, now seen corresponding path program 1 times [2018-09-10 12:38:06,101 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:38:06,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:38:06,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:38:06,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:38:06,103 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:38:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:38:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 36 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:38:07,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:38:07,610 INFO L197 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 [2018-09-10 12:38:07,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:38:07,618 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:38:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:38:07,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:38:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-09-10 12:38:08,072 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:38:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-09-10 12:38:08,392 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:38:08,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-09-10 12:38:08,393 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:38:08,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:38:08,395 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:38:08,396 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:38:08,396 INFO L87 Difference]: Start difference. First operand 96392 states and 120318 transitions. Second operand 3 states. [2018-09-10 12:38:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:38:13,711 INFO L93 Difference]: Finished difference Result 188467 states and 236040 transitions. [2018-09-10 12:38:13,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:38:13,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 626 [2018-09-10 12:38:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:38:14,170 INFO L225 Difference]: With dead ends: 188467 [2018-09-10 12:38:14,170 INFO L226 Difference]: Without dead ends: 96357 [2018-09-10 12:38:14,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1254 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:38:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96357 states. [2018-09-10 12:38:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96357 to 96354. [2018-09-10 12:38:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96354 states. [2018-09-10 12:38:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96354 states to 96354 states and 117122 transitions. [2018-09-10 12:38:16,926 INFO L78 Accepts]: Start accepts. Automaton has 96354 states and 117122 transitions. Word has length 626 [2018-09-10 12:38:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:38:16,927 INFO L480 AbstractCegarLoop]: Abstraction has 96354 states and 117122 transitions. [2018-09-10 12:38:16,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:38:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 96354 states and 117122 transitions. [2018-09-10 12:38:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2018-09-10 12:38:17,340 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:38:17,341 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:38:17,341 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:38:17,342 INFO L82 PathProgramCache]: Analyzing trace with hash 262016328, now seen corresponding path program 1 times [2018-09-10 12:38:17,342 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:38:17,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:38:17,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:38:17,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:38:17,343 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:38:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:38:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 485 proven. 530 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-09-10 12:38:20,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:38:20,885 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:38:20,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:38:20,892 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:38:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:38:21,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:38:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-09-10 12:38:22,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:38:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-09-10 12:38:23,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:38:23,892 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:38:23,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:38:23,908 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:38:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:38:24,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:38:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-09-10 12:38:25,588 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:38:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-09-10 12:38:27,018 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:38:27,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5, 5, 5] total 27 [2018-09-10 12:38:27,020 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:38:27,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-10 12:38:27,023 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-10 12:38:27,023 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2018-09-10 12:38:27,024 INFO L87 Difference]: Start difference. First operand 96354 states and 117122 transitions. Second operand 22 states. [2018-09-10 12:38:41,250 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2018-09-10 12:38:44,138 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-09-10 12:38:46,842 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2018-09-10 12:38:47,757 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2018-09-10 12:38:48,939 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-09-10 12:39:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:39:02,640 INFO L93 Difference]: Finished difference Result 194034 states and 240874 transitions. [2018-09-10 12:39:02,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-10 12:39:02,640 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1200 [2018-09-10 12:39:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:39:02,982 INFO L225 Difference]: With dead ends: 194034 [2018-09-10 12:39:02,982 INFO L226 Difference]: Without dead ends: 95101 [2018-09-10 12:39:03,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4927 GetRequests, 4840 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1889 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1243, Invalid=5729, Unknown=0, NotChecked=0, Total=6972 [2018-09-10 12:39:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95101 states. [2018-09-10 12:39:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95101 to 91584. [2018-09-10 12:39:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91584 states. [2018-09-10 12:39:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91584 states to 91584 states and 107244 transitions. [2018-09-10 12:39:05,074 INFO L78 Accepts]: Start accepts. Automaton has 91584 states and 107244 transitions. Word has length 1200 [2018-09-10 12:39:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:39:05,075 INFO L480 AbstractCegarLoop]: Abstraction has 91584 states and 107244 transitions. [2018-09-10 12:39:05,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-10 12:39:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 91584 states and 107244 transitions. [2018-09-10 12:39:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2018-09-10 12:39:05,361 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:39:05,362 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:39:05,362 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:39:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash -327429318, now seen corresponding path program 1 times [2018-09-10 12:39:05,363 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:39:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:39:05,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:39:05,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:39:05,364 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:39:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:39:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 676 proven. 380 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2018-09-10 12:39:07,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:39:07,946 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:39:07,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:39:07,954 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:39:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:39:08,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:39:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 1707 proven. 2 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-09-10 12:39:09,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:39:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 676 proven. 380 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2018-09-10 12:39:11,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:39:11,106 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:39:11,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:39:11,123 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:39:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:39:12,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:39:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 1707 proven. 2 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-09-10 12:39:13,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-10 12:39:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 676 proven. 380 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2018-09-10 12:39:14,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:39:14,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:39:14,321 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:39:14,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:39:14,322 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:39:14,323 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:39:14,323 INFO L87 Difference]: Start difference. First operand 91584 states and 107244 transitions. Second operand 9 states. [2018-09-10 12:39:14,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-10 12:39:14,324 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:39:14,329 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:39:14,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:39:14 BoogieIcfgContainer [2018-09-10 12:39:14,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:39:14,331 INFO L168 Benchmark]: Toolchain (without parser) took 229366.30 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,332 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-09-10 12:39:14,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2038.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,334 INFO L168 Benchmark]: Boogie Preprocessor took 626.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,335 INFO L168 Benchmark]: RCFGBuilder took 7914.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 545.8 MB). Peak memory consumption was 545.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,336 INFO L168 Benchmark]: TraceAbstraction took 218558.13 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -797.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-10 12:39:14,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2038.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 626.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7914.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 545.8 MB). Peak memory consumption was 545.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218558.13 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -797.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (91584states) and FLOYD_HOARE automaton (currently 2 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 218.4s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 165.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5861 SDtfs, 58386 SDslu, 3396 SDs, 0 SdLazy, 94470 SolverSat, 17717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16870 GetRequests, 16595 SyntacticMatches, 30 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96392occurred in iteration=10, 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: 15.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 7169 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 13946 NumberOfCodeBlocks, 13946 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 22179 ConstructedInterpolants, 0 QuantifiedInterpolants, 55806404 SizeOfPredicates, 6 NumberOfNonLiveVariables, 11678 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 22579/24887 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/Problem18_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-39-14-355.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-39-14-355.csv Completed graceful shutdown