java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:52:45,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:52:45,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:52:45,934 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:52:45,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:52:45,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:52:45,937 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:52:45,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:52:45,941 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:52:45,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:52:45,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:52:45,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:52:45,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:52:45,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:52:45,946 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:52:45,947 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:52:45,948 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:52:45,950 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:52:45,952 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:52:45,953 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:52:45,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:52:45,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:52:45,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:52:45,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:52:45,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:52:45,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:52:45,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:52:45,968 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:52:45,975 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:52:45,976 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:52:45,976 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:52:45,977 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:52:45,977 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:52:45,977 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:52:45,978 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:52:45,979 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:52:45,979 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:52:46,008 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:52:46,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:52:46,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:52:46,010 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:52:46,010 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:52:46,010 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:52:46,010 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:52:46,011 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:52:46,011 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:52:46,011 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:52:46,011 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:52:46,012 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:52:46,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:52:46,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:52:46,013 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:52:46,013 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:52:46,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:52:46,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:52:46,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:52:46,014 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:52:46,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:52:46,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:52:46,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:52:46,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:52:46,015 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:52:46,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:52:46,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:52:46,015 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:52:46,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:52:46,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:52:46,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:52:46,016 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:52:46,016 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:52:46,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:52:46,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:52:46,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:52:46,093 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:52:46,093 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:52:46,094 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-07-24 12:52:46,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0372a3130/30140989a8a24fa3bd9fb6cbcd392622/FLAG45dcc80a8 [2018-07-24 12:52:46,787 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:52:46,788 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-07-24 12:52:46,814 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0372a3130/30140989a8a24fa3bd9fb6cbcd392622/FLAG45dcc80a8 [2018-07-24 12:52:46,835 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0372a3130/30140989a8a24fa3bd9fb6cbcd392622 [2018-07-24 12:52:46,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:52:46,849 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:52:46,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:52:46,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:52:46,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:52:46,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:52:46" (1/1) ... [2018-07-24 12:52:46,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c2495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:46, skipping insertion in model container [2018-07-24 12:52:46,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:52:46" (1/1) ... [2018-07-24 12:52:47,089 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:52:47,595 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:52:47,614 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:52:48,084 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:52:48,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48 WrapperNode [2018-07-24 12:52:48,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:52:48,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:52:48,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:52:48,146 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:52:48,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:52:48,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:52:48,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:52:48,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:52:48,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... [2018-07-24 12:52:48,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:52:48,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:52:48,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:52:48,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:52:48,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:52:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:52:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:52:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:52:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:52:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:52:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:52:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:52:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:52:54,014 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:52:54,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:52:54 BoogieIcfgContainer [2018-07-24 12:52:54,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:52:54,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:52:54,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:52:54,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:52:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:52:46" (1/3) ... [2018-07-24 12:52:54,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6effc989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:52:54, skipping insertion in model container [2018-07-24 12:52:54,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:52:48" (2/3) ... [2018-07-24 12:52:54,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6effc989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:52:54, skipping insertion in model container [2018-07-24 12:52:54,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:52:54" (3/3) ... [2018-07-24 12:52:54,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label40_true-unreach-call.c [2018-07-24 12:52:54,034 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:52:54,043 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:52:54,105 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:52:54,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:52:54,107 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:52:54,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:52:54,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:52:54,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:52:54,107 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:52:54,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:52:54,108 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:52:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 12:52:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-24 12:52:54,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:52:54,180 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:52:54,180 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:52:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash -859326052, now seen corresponding path program 1 times [2018-07-24 12:52:54,187 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:52:54,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:52:54,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:52:54,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:52:54,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:52:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:52:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:52:55,508 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:52:55,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:52:55,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:52:55,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:52:55,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:52:55,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:52:55,536 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-07-24 12:52:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:52:59,154 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-07-24 12:52:59,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:52:59,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-07-24 12:52:59,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:52:59,182 INFO L225 Difference]: With dead ends: 1054 [2018-07-24 12:52:59,182 INFO L226 Difference]: Without dead ends: 736 [2018-07-24 12:52:59,190 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:52:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-07-24 12:52:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-07-24 12:52:59,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-07-24 12:52:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-07-24 12:52:59,294 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 191 [2018-07-24 12:52:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:52:59,295 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-07-24 12:52:59,295 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:52:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-07-24 12:52:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-24 12:52:59,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:52:59,309 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:52:59,309 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:52:59,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1108255403, now seen corresponding path program 1 times [2018-07-24 12:52:59,310 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:52:59,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:52:59,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:52:59,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:52:59,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:52:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:52:59,655 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:52:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:52:59,708 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:52:59,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:52:59,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:52:59,710 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:52:59,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:52:59,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:52:59,711 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-07-24 12:53:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:02,545 INFO L93 Difference]: Finished difference Result 1492 states and 2599 transitions. [2018-07-24 12:53:02,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:53:02,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2018-07-24 12:53:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:02,555 INFO L225 Difference]: With dead ends: 1492 [2018-07-24 12:53:02,556 INFO L226 Difference]: Without dead ends: 972 [2018-07-24 12:53:02,559 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:53:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2018-07-24 12:53:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 951. [2018-07-24 12:53:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-07-24 12:53:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1526 transitions. [2018-07-24 12:53:02,609 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1526 transitions. Word has length 201 [2018-07-24 12:53:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:02,609 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1526 transitions. [2018-07-24 12:53:02,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:53:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1526 transitions. [2018-07-24 12:53:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 12:53:02,615 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:02,615 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:53:02,615 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -803582056, now seen corresponding path program 1 times [2018-07-24 12:53:02,616 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:02,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:02,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:02,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:02,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:02,982 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:53:02,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:53:02,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:02,983 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:53:02,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:53:02,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:53:02,984 INFO L87 Difference]: Start difference. First operand 951 states and 1526 transitions. Second operand 3 states. [2018-07-24 12:53:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:06,409 INFO L93 Difference]: Finished difference Result 2745 states and 4537 transitions. [2018-07-24 12:53:06,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:53:06,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-07-24 12:53:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:06,432 INFO L225 Difference]: With dead ends: 2745 [2018-07-24 12:53:06,433 INFO L226 Difference]: Without dead ends: 1800 [2018-07-24 12:53:06,438 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:53:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-07-24 12:53:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-07-24 12:53:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-07-24 12:53:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2775 transitions. [2018-07-24 12:53:06,518 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2775 transitions. Word has length 204 [2018-07-24 12:53:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:06,518 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2775 transitions. [2018-07-24 12:53:06,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:53:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2775 transitions. [2018-07-24 12:53:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-24 12:53:06,528 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:06,528 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:53:06,528 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1724529435, now seen corresponding path program 1 times [2018-07-24 12:53:06,529 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:06,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:06,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:06,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:06,863 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:53:06,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 12:53:06,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:06,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:53:06,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:53:06,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:53:06,865 INFO L87 Difference]: Start difference. First operand 1798 states and 2775 transitions. Second operand 7 states. [2018-07-24 12:53:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:10,308 INFO L93 Difference]: Finished difference Result 5591 states and 9817 transitions. [2018-07-24 12:53:10,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:53:10,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2018-07-24 12:53:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:10,351 INFO L225 Difference]: With dead ends: 5591 [2018-07-24 12:53:10,352 INFO L226 Difference]: Without dead ends: 3799 [2018-07-24 12:53:10,362 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:53:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-07-24 12:53:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3621. [2018-07-24 12:53:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2018-07-24 12:53:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5701 transitions. [2018-07-24 12:53:10,523 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5701 transitions. Word has length 209 [2018-07-24 12:53:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:10,523 INFO L471 AbstractCegarLoop]: Abstraction has 3621 states and 5701 transitions. [2018-07-24 12:53:10,523 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:53:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5701 transitions. [2018-07-24 12:53:10,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-24 12:53:10,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:10,540 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:53:10,540 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:10,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1632431248, now seen corresponding path program 1 times [2018-07-24 12:53:10,541 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:10,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:10,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:10,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:10,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:10,763 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:53:10,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:53:10,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:10,764 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:53:10,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:53:10,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:53:10,765 INFO L87 Difference]: Start difference. First operand 3621 states and 5701 transitions. Second operand 6 states. [2018-07-24 12:53:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:12,738 INFO L93 Difference]: Finished difference Result 9454 states and 15492 transitions. [2018-07-24 12:53:12,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:53:12,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-07-24 12:53:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:12,770 INFO L225 Difference]: With dead ends: 9454 [2018-07-24 12:53:12,770 INFO L226 Difference]: Without dead ends: 5839 [2018-07-24 12:53:12,793 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:53:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2018-07-24 12:53:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5751. [2018-07-24 12:53:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2018-07-24 12:53:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8277 transitions. [2018-07-24 12:53:12,964 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8277 transitions. Word has length 216 [2018-07-24 12:53:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:12,965 INFO L471 AbstractCegarLoop]: Abstraction has 5751 states and 8277 transitions. [2018-07-24 12:53:12,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:53:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8277 transitions. [2018-07-24 12:53:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-24 12:53:12,983 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:12,984 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:53:12,984 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash -895134751, now seen corresponding path program 1 times [2018-07-24 12:53:12,984 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:12,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:12,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:12,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:12,986 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:13,476 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:13,476 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:13,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:13,495 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:13,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:14,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:14,986 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:14,986 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:53:15,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:15,024 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:15,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:15,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 12:53:15,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:53:15,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-07-24 12:53:15,872 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:53:15,873 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 12:53:15,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 12:53:15,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:53:15,874 INFO L87 Difference]: Start difference. First operand 5751 states and 8277 transitions. Second operand 8 states. [2018-07-24 12:53:19,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:19,869 INFO L93 Difference]: Finished difference Result 11543 states and 17418 transitions. [2018-07-24 12:53:19,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:53:19,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2018-07-24 12:53:19,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:19,905 INFO L225 Difference]: With dead ends: 11543 [2018-07-24 12:53:19,905 INFO L226 Difference]: Without dead ends: 5798 [2018-07-24 12:53:19,929 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 882 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:53:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2018-07-24 12:53:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5619. [2018-07-24 12:53:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5619 states. [2018-07-24 12:53:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 7610 transitions. [2018-07-24 12:53:20,145 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 7610 transitions. Word has length 222 [2018-07-24 12:53:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:20,146 INFO L471 AbstractCegarLoop]: Abstraction has 5619 states and 7610 transitions. [2018-07-24 12:53:20,146 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 12:53:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 7610 transitions. [2018-07-24 12:53:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 12:53:20,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:20,167 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:53:20,167 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2110823573, now seen corresponding path program 1 times [2018-07-24 12:53:20,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:20,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:20,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:20,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:20,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:20,775 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:20,775 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:20,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:20,800 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:21,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:21,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:22,030 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:22,030 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:53:22,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:22,061 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:22,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:22,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:23,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:53:23,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-07-24 12:53:23,118 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:53:23,119 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:53:23,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:53:23,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:53:23,120 INFO L87 Difference]: Start difference. First operand 5619 states and 7610 transitions. Second operand 7 states. [2018-07-24 12:53:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:27,940 INFO L93 Difference]: Finished difference Result 20935 states and 31490 transitions. [2018-07-24 12:53:27,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:53:27,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-07-24 12:53:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:28,031 INFO L225 Difference]: With dead ends: 20935 [2018-07-24 12:53:28,031 INFO L226 Difference]: Without dead ends: 15322 [2018-07-24 12:53:28,079 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:53:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2018-07-24 12:53:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 14969. [2018-07-24 12:53:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14969 states. [2018-07-24 12:53:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 19807 transitions. [2018-07-24 12:53:28,631 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 19807 transitions. Word has length 276 [2018-07-24 12:53:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:28,632 INFO L471 AbstractCegarLoop]: Abstraction has 14969 states and 19807 transitions. [2018-07-24 12:53:28,632 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:53:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 19807 transitions. [2018-07-24 12:53:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-24 12:53:28,691 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:28,691 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:53:28,692 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1339118199, now seen corresponding path program 1 times [2018-07-24 12:53:28,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:28,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:28,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:28,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:28,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:29,236 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:29,237 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:29,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:29,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:29,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:53:29,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:53:30,185 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:53:30,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-07-24 12:53:30,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:30,186 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:53:30,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:53:30,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:53:30,187 INFO L87 Difference]: Start difference. First operand 14969 states and 19807 transitions. Second operand 3 states. [2018-07-24 12:53:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:31,899 INFO L93 Difference]: Finished difference Result 26101 states and 34455 transitions. [2018-07-24 12:53:31,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:53:31,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 280 [2018-07-24 12:53:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:31,960 INFO L225 Difference]: With dead ends: 26101 [2018-07-24 12:53:31,960 INFO L226 Difference]: Without dead ends: 14967 [2018-07-24 12:53:31,982 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:53:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2018-07-24 12:53:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 14967. [2018-07-24 12:53:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14967 states. [2018-07-24 12:53:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 19801 transitions. [2018-07-24 12:53:32,361 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 19801 transitions. Word has length 280 [2018-07-24 12:53:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:32,361 INFO L471 AbstractCegarLoop]: Abstraction has 14967 states and 19801 transitions. [2018-07-24 12:53:32,361 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:53:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 19801 transitions. [2018-07-24 12:53:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-24 12:53:32,413 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:32,414 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:53:32,414 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash -569318288, now seen corresponding path program 1 times [2018-07-24 12:53:32,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:32,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:32,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:32,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:32,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:32,787 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:53:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 90 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:33,675 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:33,675 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:33,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:33,686 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:33,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 12:53:34,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:34,601 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:53:34,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2018-07-24 12:53:34,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:34,602 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:53:34,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:53:34,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:53:34,603 INFO L87 Difference]: Start difference. First operand 14967 states and 19801 transitions. Second operand 6 states. [2018-07-24 12:53:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:37,301 INFO L93 Difference]: Finished difference Result 31561 states and 42642 transitions. [2018-07-24 12:53:37,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:53:37,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 288 [2018-07-24 12:53:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:37,391 INFO L225 Difference]: With dead ends: 31561 [2018-07-24 12:53:37,391 INFO L226 Difference]: Without dead ends: 16272 [2018-07-24 12:53:37,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 568 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:53:37,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2018-07-24 12:53:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 15946. [2018-07-24 12:53:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15946 states. [2018-07-24 12:53:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15946 states to 15946 states and 20882 transitions. [2018-07-24 12:53:37,844 INFO L78 Accepts]: Start accepts. Automaton has 15946 states and 20882 transitions. Word has length 288 [2018-07-24 12:53:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:37,844 INFO L471 AbstractCegarLoop]: Abstraction has 15946 states and 20882 transitions. [2018-07-24 12:53:37,844 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:53:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15946 states and 20882 transitions. [2018-07-24 12:53:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-24 12:53:37,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:37,876 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:53:37,876 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash -206211133, now seen corresponding path program 1 times [2018-07-24 12:53:37,877 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:37,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:37,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:37,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:37,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:38,400 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:38,400 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:38,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:38,408 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:38,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 12:53:38,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:53:39,038 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:53:39,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:53:39,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:39,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:53:39,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:53:39,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:53:39,040 INFO L87 Difference]: Start difference. First operand 15946 states and 20882 transitions. Second operand 5 states. [2018-07-24 12:53:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:41,850 INFO L93 Difference]: Finished difference Result 44547 states and 59537 transitions. [2018-07-24 12:53:41,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:53:41,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2018-07-24 12:53:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:41,974 INFO L225 Difference]: With dead ends: 44547 [2018-07-24 12:53:41,974 INFO L226 Difference]: Without dead ends: 28607 [2018-07-24 12:53:42,018 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:53:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28607 states. [2018-07-24 12:53:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28607 to 27426. [2018-07-24 12:53:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27426 states. [2018-07-24 12:53:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27426 states to 27426 states and 35402 transitions. [2018-07-24 12:53:42,698 INFO L78 Accepts]: Start accepts. Automaton has 27426 states and 35402 transitions. Word has length 290 [2018-07-24 12:53:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:42,698 INFO L471 AbstractCegarLoop]: Abstraction has 27426 states and 35402 transitions. [2018-07-24 12:53:42,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:53:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27426 states and 35402 transitions. [2018-07-24 12:53:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-24 12:53:42,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:42,734 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:53:42,734 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1632880686, now seen corresponding path program 1 times [2018-07-24 12:53:42,734 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:42,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:42,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:42,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:42,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:43,214 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:53:43,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 12:53:43,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:43,215 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:53:43,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:53:43,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:53:43,215 INFO L87 Difference]: Start difference. First operand 27426 states and 35402 transitions. Second operand 7 states. [2018-07-24 12:53:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:46,306 INFO L93 Difference]: Finished difference Result 75134 states and 104382 transitions. [2018-07-24 12:53:46,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:53:46,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-07-24 12:53:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:46,665 INFO L225 Difference]: With dead ends: 75134 [2018-07-24 12:53:46,666 INFO L226 Difference]: Without dead ends: 53604 [2018-07-24 12:53:46,744 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:53:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53604 states. [2018-07-24 12:53:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53604 to 52220. [2018-07-24 12:53:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52220 states. [2018-07-24 12:53:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52220 states to 52220 states and 66647 transitions. [2018-07-24 12:53:48,442 INFO L78 Accepts]: Start accepts. Automaton has 52220 states and 66647 transitions. Word has length 304 [2018-07-24 12:53:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:48,442 INFO L471 AbstractCegarLoop]: Abstraction has 52220 states and 66647 transitions. [2018-07-24 12:53:48,442 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:53:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52220 states and 66647 transitions. [2018-07-24 12:53:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 12:53:48,495 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:48,495 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:53:48,495 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:48,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1326697983, now seen corresponding path program 1 times [2018-07-24 12:53:48,496 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:48,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:48,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:48,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:48,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:48,766 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:53:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:53:49,194 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:49,195 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:49,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:49,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:49,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 12:53:49,950 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:53:50,096 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:53:50,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:53:50,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:50,097 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:53:50,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:53:50,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:53:50,098 INFO L87 Difference]: Start difference. First operand 52220 states and 66647 transitions. Second operand 5 states. [2018-07-24 12:53:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:53:52,961 INFO L93 Difference]: Finished difference Result 127152 states and 163719 transitions. [2018-07-24 12:53:52,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:53:52,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-07-24 12:53:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:53:53,738 INFO L225 Difference]: With dead ends: 127152 [2018-07-24 12:53:53,739 INFO L226 Difference]: Without dead ends: 74953 [2018-07-24 12:53:53,813 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:53:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74953 states. [2018-07-24 12:53:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74953 to 74240. [2018-07-24 12:53:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74240 states. [2018-07-24 12:53:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74240 states to 74240 states and 93542 transitions. [2018-07-24 12:53:55,529 INFO L78 Accepts]: Start accepts. Automaton has 74240 states and 93542 transitions. Word has length 307 [2018-07-24 12:53:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:53:55,529 INFO L471 AbstractCegarLoop]: Abstraction has 74240 states and 93542 transitions. [2018-07-24 12:53:55,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:53:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 74240 states and 93542 transitions. [2018-07-24 12:53:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-24 12:53:55,587 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:53:55,587 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:53:55,588 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:53:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1034631474, now seen corresponding path program 1 times [2018-07-24 12:53:55,588 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:53:55,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:55,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:55,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:53:55,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:53:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:56,003 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:53:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 113 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:56,367 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:56,367 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:53:56,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:56,375 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:56,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:57,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:53:57,692 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:53:57,692 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:53:57,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:53:57,707 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:53:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:53:58,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:53:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:53:58,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:53:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:53:59,133 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-24 12:53:59,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 5, 5] total 21 [2018-07-24 12:53:59,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:53:59,135 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:53:59,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:53:59,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:53:59,136 INFO L87 Difference]: Start difference. First operand 74240 states and 93542 transitions. Second operand 5 states. [2018-07-24 12:54:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:54:01,255 INFO L93 Difference]: Finished difference Result 188242 states and 242216 transitions. [2018-07-24 12:54:01,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:54:01,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2018-07-24 12:54:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:54:01,786 INFO L225 Difference]: With dead ends: 188242 [2018-07-24 12:54:01,786 INFO L226 Difference]: Without dead ends: 131001 [2018-07-24 12:54:01,938 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1224 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:54:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131001 states. [2018-07-24 12:54:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131001 to 129633. [2018-07-24 12:54:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129633 states. [2018-07-24 12:54:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129633 states to 129633 states and 162384 transitions. [2018-07-24 12:54:05,876 INFO L78 Accepts]: Start accepts. Automaton has 129633 states and 162384 transitions. Word has length 309 [2018-07-24 12:54:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:54:05,876 INFO L471 AbstractCegarLoop]: Abstraction has 129633 states and 162384 transitions. [2018-07-24 12:54:05,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:54:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 129633 states and 162384 transitions. [2018-07-24 12:54:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-24 12:54:05,953 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:54:05,953 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:54:05,953 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:54:05,954 INFO L82 PathProgramCache]: Analyzing trace with hash 694967487, now seen corresponding path program 1 times [2018-07-24 12:54:05,954 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:54:05,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:05,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:05,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:05,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:54:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:06,392 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:54:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:54:06,577 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:06,577 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:54:06,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:06,587 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:06,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:54:06,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:54:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:54:07,119 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:07,119 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:54:07,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:07,135 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:07,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:54:07,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:54:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:54:08,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:54:08,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4, 4, 4] total 15 [2018-07-24 12:54:08,076 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:54:08,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 12:54:08,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 12:54:08,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:54:08,078 INFO L87 Difference]: Start difference. First operand 129633 states and 162384 transitions. Second operand 10 states. [2018-07-24 12:54:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:54:19,496 INFO L93 Difference]: Finished difference Result 262622 states and 367442 transitions. [2018-07-24 12:54:19,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-24 12:54:19,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 310 [2018-07-24 12:54:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:54:20,078 INFO L225 Difference]: With dead ends: 262622 [2018-07-24 12:54:20,078 INFO L226 Difference]: Without dead ends: 131621 [2018-07-24 12:54:20,361 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1267 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=760, Invalid=2546, Unknown=0, NotChecked=0, Total=3306 [2018-07-24 12:54:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131621 states. [2018-07-24 12:54:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131621 to 119278. [2018-07-24 12:54:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119278 states. [2018-07-24 12:54:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119278 states to 119278 states and 154982 transitions. [2018-07-24 12:54:24,662 INFO L78 Accepts]: Start accepts. Automaton has 119278 states and 154982 transitions. Word has length 310 [2018-07-24 12:54:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:54:24,663 INFO L471 AbstractCegarLoop]: Abstraction has 119278 states and 154982 transitions. [2018-07-24 12:54:24,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 12:54:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 119278 states and 154982 transitions. [2018-07-24 12:54:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-24 12:54:24,790 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:54:24,791 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:54:24,791 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:54:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash 789354965, now seen corresponding path program 1 times [2018-07-24 12:54:24,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:54:24,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:24,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:24,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:24,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:54:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:25,389 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:25,389 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:54:25,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:25,399 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:25,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:25,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:54:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:26,712 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:26,712 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:54:26,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:26,729 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:27,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:27,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:54:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:27,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:54:27,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-07-24 12:54:27,674 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:54:27,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:54:27,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:54:27,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:54:27,676 INFO L87 Difference]: Start difference. First operand 119278 states and 154982 transitions. Second operand 9 states. [2018-07-24 12:54:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:54:42,974 INFO L93 Difference]: Finished difference Result 256293 states and 360560 transitions. [2018-07-24 12:54:42,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-24 12:54:42,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2018-07-24 12:54:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:54:43,666 INFO L225 Difference]: With dead ends: 256293 [2018-07-24 12:54:43,666 INFO L226 Difference]: Without dead ends: 137031 [2018-07-24 12:54:43,958 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-07-24 12:54:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137031 states. [2018-07-24 12:54:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137031 to 128671. [2018-07-24 12:54:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128671 states. [2018-07-24 12:54:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128671 states to 128671 states and 157049 transitions. [2018-07-24 12:54:48,106 INFO L78 Accepts]: Start accepts. Automaton has 128671 states and 157049 transitions. Word has length 329 [2018-07-24 12:54:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:54:48,106 INFO L471 AbstractCegarLoop]: Abstraction has 128671 states and 157049 transitions. [2018-07-24 12:54:48,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:54:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 128671 states and 157049 transitions. [2018-07-24 12:54:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-24 12:54:48,227 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:54:48,227 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:54:48,227 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:54:48,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1582672545, now seen corresponding path program 1 times [2018-07-24 12:54:48,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:54:48,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:48,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:48,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:48,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:54:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:54:48,752 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:48,752 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:54:48,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:48,760 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:49,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:54:49,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:54:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:54:50,352 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:54:50,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 12:54:50,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:54:50,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:54:50,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:54:50,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:54:50,354 INFO L87 Difference]: Start difference. First operand 128671 states and 157049 transitions. Second operand 3 states. [2018-07-24 12:54:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:54:53,990 INFO L93 Difference]: Finished difference Result 247556 states and 302688 transitions. [2018-07-24 12:54:53,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:54:53,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 354 [2018-07-24 12:54:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:54:54,373 INFO L225 Difference]: With dead ends: 247556 [2018-07-24 12:54:54,373 INFO L226 Difference]: Without dead ends: 118951 [2018-07-24 12:54:54,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:54:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118951 states. [2018-07-24 12:54:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118951 to 117486. [2018-07-24 12:54:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117486 states. [2018-07-24 12:54:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117486 states to 117486 states and 143099 transitions. [2018-07-24 12:54:58,012 INFO L78 Accepts]: Start accepts. Automaton has 117486 states and 143099 transitions. Word has length 354 [2018-07-24 12:54:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:54:58,012 INFO L471 AbstractCegarLoop]: Abstraction has 117486 states and 143099 transitions. [2018-07-24 12:54:58,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:54:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 117486 states and 143099 transitions. [2018-07-24 12:54:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-07-24 12:54:58,211 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:54:58,212 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:54:58,212 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:54:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash -685305379, now seen corresponding path program 1 times [2018-07-24 12:54:58,212 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:54:58,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:58,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:58,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:54:58,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:54:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 12:54:58,727 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:54:58,728 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:54:58,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:54:58,736 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:54:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:54:59,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:54:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:54:59,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:55:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:55:00,030 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:55:00,030 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:55:00,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:55:00,047 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:55:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:55:00,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:55:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:55:01,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:55:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:55:01,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:55:01,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:55:01,315 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:55:01,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:55:01,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:55:01,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:55:01,317 INFO L87 Difference]: Start difference. First operand 117486 states and 143099 transitions. Second operand 9 states. [2018-07-24 12:55:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:55:11,817 INFO L93 Difference]: Finished difference Result 219708 states and 288561 transitions. [2018-07-24 12:55:11,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 12:55:11,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 475 [2018-07-24 12:55:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:55:11,819 INFO L225 Difference]: With dead ends: 219708 [2018-07-24 12:55:11,819 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 12:55:12,176 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1965 GetRequests, 1917 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2018-07-24 12:55:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 12:55:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 12:55:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 12:55:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 12:55:12,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 475 [2018-07-24 12:55:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:55:12,180 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 12:55:12,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:55:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 12:55:12,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 12:55:12,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 12:55:12,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:12,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,407 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,653 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:13,994 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:14,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:16,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:16,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:18,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:18,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:18,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:18,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:20,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:26,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:30,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:44,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:55:44,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:06,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:06,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:06,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:07,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:07,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:07,717 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:08,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:10,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:12,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:12,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:13,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:13,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:15,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:15,734 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:16,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:17,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:19,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:20,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:28,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:28,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:29,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:30,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 12:56:32,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-07-24 12:56:33,702 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 12:56:33,703 INFO L168 Benchmark]: Toolchain (without parser) took 226855.11 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,704 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:56:33,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1295.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,706 INFO L168 Benchmark]: Boogie Preprocessor took 360.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.2 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,707 INFO L168 Benchmark]: RCFGBuilder took 5380.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 275.7 MB). Peak memory consumption was 275.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,707 INFO L168 Benchmark]: TraceAbstraction took 219686.11 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:56:33,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1295.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 127.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 360.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.2 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5380.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 275.7 MB). Peak memory consumption was 275.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219686.11 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1587]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 5180. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-56-33-730.csv Completed graceful shutdown