java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:26,813 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:26,815 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:26,828 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:26,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:26,830 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:26,831 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:26,833 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:26,835 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:26,835 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:26,836 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:26,837 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:26,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:26,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:26,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:26,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:26,842 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:26,844 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:26,846 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:26,847 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:26,848 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:26,850 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:26,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:13:26,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:13:26,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:13:26,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:13:26,858 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:13:26,860 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:13:26,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:13:26,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:13:26,863 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:13:26,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:13:26,871 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:13:26,901 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:26,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:26,902 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:26,903 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:26,903 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:26,903 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:26,904 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:26,904 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:26,904 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:26,904 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:26,904 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:26,905 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:26,905 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:26,905 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:26,907 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:26,907 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:26,907 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:26,907 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:26,908 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:26,908 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:26,908 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:26,908 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:26,908 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:26,908 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:26,910 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:26,910 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:26,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:26,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:26,911 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:26,911 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:26,911 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:26,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:26,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:26,912 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:26,912 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:26,912 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:26,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:26,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:26,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:26,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:26,999 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:27,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c [2018-10-25 00:13:27,063 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0a7cbda0/2f37907766b342d2ab9c10343d90b3e7/FLAG96d1d4679 [2018-10-25 00:13:27,719 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:27,720 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c [2018-10-25 00:13:27,744 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0a7cbda0/2f37907766b342d2ab9c10343d90b3e7/FLAG96d1d4679 [2018-10-25 00:13:27,764 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a0a7cbda0/2f37907766b342d2ab9c10343d90b3e7 [2018-10-25 00:13:27,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:27,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:27,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:27,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:27,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:27,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:27" (1/1) ... [2018-10-25 00:13:27,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e748750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:27, skipping insertion in model container [2018-10-25 00:13:27,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:27" (1/1) ... [2018-10-25 00:13:27,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:27,916 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:28,662 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:28,668 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:29,119 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:29,142 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:29,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29 WrapperNode [2018-10-25 00:13:29,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:29,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:29,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:29,144 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:29,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:29,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:29,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:29,446 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:29,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... [2018-10-25 00:13:29,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:29,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:29,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:29,580 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:29,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:13:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:34,131 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:34,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:34 BoogieIcfgContainer [2018-10-25 00:13:34,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:34,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:34,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:34,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:34,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:27" (1/3) ... [2018-10-25 00:13:34,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39acd5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:34, skipping insertion in model container [2018-10-25 00:13:34,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:29" (2/3) ... [2018-10-25 00:13:34,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39acd5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:34, skipping insertion in model container [2018-10-25 00:13:34,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:34" (3/3) ... [2018-10-25 00:13:34,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20_true-unreach-call.c [2018-10-25 00:13:34,154 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:34,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:34,188 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:34,236 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:34,236 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:34,236 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:34,236 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:34,236 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:34,237 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:34,237 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:34,237 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-25 00:13:34,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:34,291 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:34,293 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:34,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:34,299 INFO L82 PathProgramCache]: Analyzing trace with hash -775720303, now seen corresponding path program 1 times [2018-10-25 00:13:34,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:34,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:34,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:34,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:34,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:35,316 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:35,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:35,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:35,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:35,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:35,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:35,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:35,539 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:13:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:37,544 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-25 00:13:37,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:37,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2018-10-25 00:13:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:37,571 INFO L225 Difference]: With dead ends: 838 [2018-10-25 00:13:37,571 INFO L226 Difference]: Without dead ends: 524 [2018-10-25 00:13:37,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-25 00:13:37,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-25 00:13:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-25 00:13:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-25 00:13:37,680 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 202 [2018-10-25 00:13:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:37,682 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-25 00:13:37,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-25 00:13:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-25 00:13:37,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:37,693 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:37,693 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:37,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1755738424, now seen corresponding path program 1 times [2018-10-25 00:13:37,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:37,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:37,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:37,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:37,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:38,013 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:13:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:38,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:38,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:38,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:38,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:38,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:38,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:38,214 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-25 00:13:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:42,248 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-25 00:13:42,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:13:42,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2018-10-25 00:13:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:42,271 INFO L225 Difference]: With dead ends: 1581 [2018-10-25 00:13:42,271 INFO L226 Difference]: Without dead ends: 1065 [2018-10-25 00:13:42,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:13:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-25 00:13:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-25 00:13:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-25 00:13:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-25 00:13:42,359 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 212 [2018-10-25 00:13:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:42,360 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-25 00:13:42,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:13:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-25 00:13:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-25 00:13:42,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:42,369 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:42,369 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:42,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash -548370667, now seen corresponding path program 1 times [2018-10-25 00:13:42,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:42,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:42,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:42,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:42,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:42,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:42,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:42,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:42,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:42,693 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-25 00:13:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:45,769 INFO L93 Difference]: Finished difference Result 2903 states and 5102 transitions. [2018-10-25 00:13:45,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:45,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-10-25 00:13:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:45,788 INFO L225 Difference]: With dead ends: 2903 [2018-10-25 00:13:45,788 INFO L226 Difference]: Without dead ends: 1886 [2018-10-25 00:13:45,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2018-10-25 00:13:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1866. [2018-10-25 00:13:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2018-10-25 00:13:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 3136 transitions. [2018-10-25 00:13:45,864 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 3136 transitions. Word has length 215 [2018-10-25 00:13:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:45,866 INFO L481 AbstractCegarLoop]: Abstraction has 1866 states and 3136 transitions. [2018-10-25 00:13:45,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 3136 transitions. [2018-10-25 00:13:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-25 00:13:45,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:45,876 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:45,877 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:45,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1747135276, now seen corresponding path program 1 times [2018-10-25 00:13:45,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:45,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:45,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:45,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:45,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:46,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:46,133 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:46,134 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-25 00:13:46,137 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:46,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:46,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:47,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:13:47,791 INFO L272 AbstractInterpreter]: Visited 203 different actions 203 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:13:47,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:47,836 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:13:48,974 INFO L232 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 74.41% of their original sizes. [2018-10-25 00:13:48,974 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:13:49,440 INFO L413 sIntCurrentIteration]: We have 232 unified AI predicates [2018-10-25 00:13:49,440 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:13:49,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:49,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:13:49,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:49,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:13:49,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:13:49,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:13:49,443 INFO L87 Difference]: Start difference. First operand 1866 states and 3136 transitions. Second operand 13 states. [2018-10-25 00:14:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:02,199 INFO L93 Difference]: Finished difference Result 3936 states and 6627 transitions. [2018-10-25 00:14:02,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:14:02,199 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2018-10-25 00:14:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:02,210 INFO L225 Difference]: With dead ends: 3936 [2018-10-25 00:14:02,210 INFO L226 Difference]: Without dead ends: 2076 [2018-10-25 00:14:02,216 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:14:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2018-10-25 00:14:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2074. [2018-10-25 00:14:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2018-10-25 00:14:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3354 transitions. [2018-10-25 00:14:02,272 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3354 transitions. Word has length 233 [2018-10-25 00:14:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:02,272 INFO L481 AbstractCegarLoop]: Abstraction has 2074 states and 3354 transitions. [2018-10-25 00:14:02,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:14:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3354 transitions. [2018-10-25 00:14:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-25 00:14:02,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:02,282 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:14:02,283 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:02,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:02,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1415226935, now seen corresponding path program 1 times [2018-10-25 00:14:02,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:02,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:02,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:02,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:02,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:02,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:02,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:02,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-25 00:14:02,509 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:02,520 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:02,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:05,269 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:14:05,269 INFO L272 AbstractInterpreter]: Visited 207 different actions 406 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:14:05,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:05,278 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:14:05,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:05,279 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:14:05,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:05,289 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:14:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:05,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:14:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-25 00:14:05,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:14:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-25 00:14:06,170 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:14:06,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:14:06,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:06,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:14:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:14:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:14:06,172 INFO L87 Difference]: Start difference. First operand 2074 states and 3354 transitions. Second operand 3 states. [2018-10-25 00:14:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:08,943 INFO L93 Difference]: Finished difference Result 5683 states and 9678 transitions. [2018-10-25 00:14:08,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:14:08,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2018-10-25 00:14:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:08,969 INFO L225 Difference]: With dead ends: 5683 [2018-10-25 00:14:08,969 INFO L226 Difference]: Without dead ends: 3823 [2018-10-25 00:14:08,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:14:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2018-10-25 00:14:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3821. [2018-10-25 00:14:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3821 states. [2018-10-25 00:14:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 6011 transitions. [2018-10-25 00:14:09,098 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 6011 transitions. Word has length 242 [2018-10-25 00:14:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:09,102 INFO L481 AbstractCegarLoop]: Abstraction has 3821 states and 6011 transitions. [2018-10-25 00:14:09,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:14:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 6011 transitions. [2018-10-25 00:14:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-25 00:14:09,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:09,120 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:14:09,120 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:09,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1659653317, now seen corresponding path program 1 times [2018-10-25 00:14:09,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:09,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:09,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:09,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:09,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:09,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:09,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:09,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-10-25 00:14:09,422 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:09,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:09,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:12,498 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:14:12,499 INFO L272 AbstractInterpreter]: Visited 207 different actions 406 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:14:12,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:12,507 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:14:12,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:12,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:14:12,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:12,515 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:14:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:12,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:14:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:12,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:14:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:13,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:14:13,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 00:14:13,129 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:14:13,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:14:13,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:14:13,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:14:13,131 INFO L87 Difference]: Start difference. First operand 3821 states and 6011 transitions. Second operand 6 states. [2018-10-25 00:14:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:17,442 INFO L93 Difference]: Finished difference Result 13871 states and 25111 transitions. [2018-10-25 00:14:17,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:14:17,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2018-10-25 00:14:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:17,536 INFO L225 Difference]: With dead ends: 13871 [2018-10-25 00:14:17,537 INFO L226 Difference]: Without dead ends: 10264 [2018-10-25 00:14:17,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 537 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:14:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2018-10-25 00:14:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 10000. [2018-10-25 00:14:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10000 states. [2018-10-25 00:14:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 15825 transitions. [2018-10-25 00:14:17,971 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 15825 transitions. Word has length 268 [2018-10-25 00:14:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:17,972 INFO L481 AbstractCegarLoop]: Abstraction has 10000 states and 15825 transitions. [2018-10-25 00:14:17,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:14:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 15825 transitions. [2018-10-25 00:14:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-25 00:14:18,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:18,030 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:14:18,030 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:18,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash -130487088, now seen corresponding path program 1 times [2018-10-25 00:14:18,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:18,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:18,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:18,372 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:14:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 94 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 00:14:18,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:18,839 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:18,840 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-10-25 00:14:18,840 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:18,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:18,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:19,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:14:19,789 INFO L272 AbstractInterpreter]: Visited 206 different actions 406 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:14:19,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:19,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:14:21,866 INFO L232 lantSequenceWeakener]: Weakened 298 states. On average, predicates are now at 73.33% of their original sizes. [2018-10-25 00:14:21,867 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:14:22,558 INFO L413 sIntCurrentIteration]: We have 300 unified AI predicates [2018-10-25 00:14:22,558 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:14:22,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:14:22,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-25 00:14:22,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:14:22,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-25 00:14:22,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-25 00:14:22,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-10-25 00:14:22,560 INFO L87 Difference]: Start difference. First operand 10000 states and 15825 transitions. Second operand 19 states. [2018-10-25 00:14:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:14:44,540 INFO L93 Difference]: Finished difference Result 19950 states and 31337 transitions. [2018-10-25 00:14:44,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:14:44,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 301 [2018-10-25 00:14:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:14:44,584 INFO L225 Difference]: With dead ends: 19950 [2018-10-25 00:14:44,585 INFO L226 Difference]: Without dead ends: 10169 [2018-10-25 00:14:44,620 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 309 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2018-10-25 00:14:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10169 states. [2018-10-25 00:14:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10169 to 10166. [2018-10-25 00:14:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10166 states. [2018-10-25 00:14:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10166 states to 10166 states and 15661 transitions. [2018-10-25 00:14:44,897 INFO L78 Accepts]: Start accepts. Automaton has 10166 states and 15661 transitions. Word has length 301 [2018-10-25 00:14:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:14:44,898 INFO L481 AbstractCegarLoop]: Abstraction has 10166 states and 15661 transitions. [2018-10-25 00:14:44,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-25 00:14:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10166 states and 15661 transitions. [2018-10-25 00:14:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-25 00:14:44,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:14:44,946 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:14:44,946 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:14:44,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:44,947 INFO L82 PathProgramCache]: Analyzing trace with hash -703077052, now seen corresponding path program 1 times [2018-10-25 00:14:44,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:14:44,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:44,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:44,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:14:44,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:14:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:45,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:45,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:14:45,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-25 00:14:45,545 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:14:45,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:14:45,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:14:50,401 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:14:50,401 INFO L272 AbstractInterpreter]: Visited 207 different actions 619 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:14:50,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:14:50,411 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:14:50,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:14:50,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:14:50,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:14:50,420 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:14:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:14:50,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:14:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:51,129 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:14:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:14:51,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:14:51,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:14:51,530 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:14:51,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:14:51,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:14:51,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:14:51,531 INFO L87 Difference]: Start difference. First operand 10166 states and 15661 transitions. Second operand 9 states. [2018-10-25 00:15:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:01,027 INFO L93 Difference]: Finished difference Result 39149 states and 75858 transitions. [2018-10-25 00:15:01,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-25 00:15:01,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2018-10-25 00:15:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:01,244 INFO L225 Difference]: With dead ends: 39149 [2018-10-25 00:15:01,244 INFO L226 Difference]: Without dead ends: 29408 [2018-10-25 00:15:01,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 641 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2018-10-25 00:15:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2018-10-25 00:15:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 28079. [2018-10-25 00:15:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28079 states. [2018-10-25 00:15:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28079 states to 28079 states and 37973 transitions. [2018-10-25 00:15:02,405 INFO L78 Accepts]: Start accepts. Automaton has 28079 states and 37973 transitions. Word has length 311 [2018-10-25 00:15:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:02,406 INFO L481 AbstractCegarLoop]: Abstraction has 28079 states and 37973 transitions. [2018-10-25 00:15:02,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:15:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 28079 states and 37973 transitions. [2018-10-25 00:15:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-25 00:15:02,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:02,472 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:02,472 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:02,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2112084087, now seen corresponding path program 1 times [2018-10-25 00:15:02,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:02,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:02,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:02,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:02,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:03,061 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:15:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 132 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:15:03,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:03,305 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:03,305 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-25 00:15:03,306 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:03,311 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:03,312 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:08,108 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:08,109 INFO L272 AbstractInterpreter]: Visited 208 different actions 627 times. Merged at 8 different actions 26 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:15:08,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:08,117 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:08,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:08,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:15:08,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:08,126 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:08,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:15:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 00:15:09,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:15:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:15:09,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:15:09,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-10-25 00:15:09,921 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:15:09,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:15:09,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:15:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:15:09,923 INFO L87 Difference]: Start difference. First operand 28079 states and 37973 transitions. Second operand 12 states. [2018-10-25 00:15:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:24,611 INFO L93 Difference]: Finished difference Result 115622 states and 163821 transitions. [2018-10-25 00:15:24,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-25 00:15:24,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 318 [2018-10-25 00:15:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:24,980 INFO L225 Difference]: With dead ends: 115622 [2018-10-25 00:15:24,980 INFO L226 Difference]: Without dead ends: 87966 [2018-10-25 00:15:25,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1536, Invalid=8564, Unknown=0, NotChecked=0, Total=10100 [2018-10-25 00:15:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87966 states. [2018-10-25 00:15:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87966 to 86918. [2018-10-25 00:15:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86918 states. [2018-10-25 00:15:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86918 states to 86918 states and 112172 transitions. [2018-10-25 00:15:27,731 INFO L78 Accepts]: Start accepts. Automaton has 86918 states and 112172 transitions. Word has length 318 [2018-10-25 00:15:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:27,733 INFO L481 AbstractCegarLoop]: Abstraction has 86918 states and 112172 transitions. [2018-10-25 00:15:27,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:15:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 86918 states and 112172 transitions. [2018-10-25 00:15:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-25 00:15:27,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:27,861 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 00:15:27,861 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:27,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash -2006203841, now seen corresponding path program 1 times [2018-10-25 00:15:27,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:27,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:27,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 169 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:15:28,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:28,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:28,565 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-10-25 00:15:28,565 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [409], [412], [416], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:28,571 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:28,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:33,292 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:33,292 INFO L272 AbstractInterpreter]: Visited 208 different actions 622 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:15:33,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:33,301 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:33,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:33,301 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:15:33,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:33,310 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:33,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:15:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 00:15:33,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:15:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 169 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:15:33,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:15:33,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 00:15:33,816 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:15:33,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:15:33,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:15:33,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:15:33,818 INFO L87 Difference]: Start difference. First operand 86918 states and 112172 transitions. Second operand 6 states. [2018-10-25 00:15:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:35,542 INFO L93 Difference]: Finished difference Result 155547 states and 200322 transitions. [2018-10-25 00:15:35,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:15:35,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 357 [2018-10-25 00:15:35,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:35,820 INFO L225 Difference]: With dead ends: 155547 [2018-10-25 00:15:35,820 INFO L226 Difference]: Without dead ends: 81730 [2018-10-25 00:15:35,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 713 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:15:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81730 states. [2018-10-25 00:15:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81730 to 81688. [2018-10-25 00:15:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81688 states. [2018-10-25 00:15:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81688 states to 81688 states and 103733 transitions. [2018-10-25 00:15:38,589 INFO L78 Accepts]: Start accepts. Automaton has 81688 states and 103733 transitions. Word has length 357 [2018-10-25 00:15:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:38,590 INFO L481 AbstractCegarLoop]: Abstraction has 81688 states and 103733 transitions. [2018-10-25 00:15:38,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:15:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 81688 states and 103733 transitions. [2018-10-25 00:15:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-25 00:15:38,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:38,692 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:38,692 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:38,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 180731622, now seen corresponding path program 1 times [2018-10-25 00:15:38,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:38,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:38,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:38,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:38,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 196 proven. 66 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-25 00:15:39,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:39,294 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:39,294 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-10-25 00:15:39,294 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:39,300 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:39,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:44,820 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:44,820 INFO L272 AbstractInterpreter]: Visited 208 different actions 629 times. Merged at 8 different actions 28 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:15:44,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:44,828 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:44,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:44,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:15:44,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:44,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:45,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:15:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 293 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-25 00:15:45,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:15:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 295 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-25 00:15:45,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:15:45,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:15:45,422 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:15:45,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:15:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:15:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:15:45,423 INFO L87 Difference]: Start difference. First operand 81688 states and 103733 transitions. Second operand 9 states. [2018-10-25 00:15:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:52,270 INFO L93 Difference]: Finished difference Result 157757 states and 204460 transitions. [2018-10-25 00:15:52,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-25 00:15:52,270 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 367 [2018-10-25 00:15:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:52,466 INFO L225 Difference]: With dead ends: 157757 [2018-10-25 00:15:52,466 INFO L226 Difference]: Without dead ends: 76492 [2018-10-25 00:15:52,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 757 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2018-10-25 00:15:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76492 states. [2018-10-25 00:15:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76492 to 75081. [2018-10-25 00:15:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75081 states. [2018-10-25 00:15:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75081 states to 75081 states and 88029 transitions. [2018-10-25 00:15:53,968 INFO L78 Accepts]: Start accepts. Automaton has 75081 states and 88029 transitions. Word has length 367 [2018-10-25 00:15:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:53,968 INFO L481 AbstractCegarLoop]: Abstraction has 75081 states and 88029 transitions. [2018-10-25 00:15:53,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:15:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 75081 states and 88029 transitions. [2018-10-25 00:15:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-25 00:15:54,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:54,051 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:54,051 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:54,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash 973085746, now seen corresponding path program 1 times [2018-10-25 00:15:54,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:54,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:54,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:54,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:54,712 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:15:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 190 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-25 00:15:55,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:55,021 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:55,021 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-10-25 00:15:55,021 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:55,027 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:55,027 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:59,618 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:15:59,618 INFO L272 AbstractInterpreter]: Visited 209 different actions 631 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:15:59,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:59,630 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:15:59,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:59,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:15:59,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:59,641 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:15:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:59,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-25 00:16:00,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 190 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-25 00:16:00,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:00,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2018-10-25 00:16:00,620 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:00,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 00:16:00,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 00:16:00,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:16:00,622 INFO L87 Difference]: Start difference. First operand 75081 states and 88029 transitions. Second operand 10 states. [2018-10-25 00:16:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:06,739 INFO L93 Difference]: Finished difference Result 114780 states and 137493 transitions. [2018-10-25 00:16:06,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-25 00:16:06,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 376 [2018-10-25 00:16:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:06,913 INFO L225 Difference]: With dead ends: 114780 [2018-10-25 00:16:06,913 INFO L226 Difference]: Without dead ends: 76167 [2018-10-25 00:16:06,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2018-10-25 00:16:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76167 states. [2018-10-25 00:16:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76167 to 75018. [2018-10-25 00:16:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75018 states. [2018-10-25 00:16:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75018 states to 75018 states and 87402 transitions. [2018-10-25 00:16:08,503 INFO L78 Accepts]: Start accepts. Automaton has 75018 states and 87402 transitions. Word has length 376 [2018-10-25 00:16:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:08,504 INFO L481 AbstractCegarLoop]: Abstraction has 75018 states and 87402 transitions. [2018-10-25 00:16:08,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-25 00:16:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 75018 states and 87402 transitions. [2018-10-25 00:16:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-10-25 00:16:08,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:08,568 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:08,569 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:08,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash 199903188, now seen corresponding path program 1 times [2018-10-25 00:16:08,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:08,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:08,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:08,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:08,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 255 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-25 00:16:09,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:09,342 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:09,342 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 426 with the following transitions: [2018-10-25 00:16:09,343 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [127], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [491], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:09,347 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:09,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:13,913 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:13,913 INFO L272 AbstractInterpreter]: Visited 209 different actions 632 times. Merged at 8 different actions 28 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:16:13,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:13,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:13,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:13,941 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:16:13,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:13,948 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:14,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-25 00:16:14,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 224 proven. 125 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-25 00:16:14,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:14,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-10-25 00:16:14,619 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:14,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 00:16:14,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 00:16:14,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:16:14,620 INFO L87 Difference]: Start difference. First operand 75018 states and 87402 transitions. Second operand 10 states. [2018-10-25 00:16:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:19,181 INFO L93 Difference]: Finished difference Result 162528 states and 198966 transitions. [2018-10-25 00:16:19,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:16:19,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 425 [2018-10-25 00:16:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:19,443 INFO L225 Difference]: With dead ends: 162528 [2018-10-25 00:16:19,444 INFO L226 Difference]: Without dead ends: 92347 [2018-10-25 00:16:19,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-10-25 00:16:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92347 states. [2018-10-25 00:16:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92347 to 89827. [2018-10-25 00:16:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89827 states. [2018-10-25 00:16:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89827 states to 89827 states and 106236 transitions. [2018-10-25 00:16:20,901 INFO L78 Accepts]: Start accepts. Automaton has 89827 states and 106236 transitions. Word has length 425 [2018-10-25 00:16:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:20,901 INFO L481 AbstractCegarLoop]: Abstraction has 89827 states and 106236 transitions. [2018-10-25 00:16:20,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-25 00:16:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 89827 states and 106236 transitions. [2018-10-25 00:16:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-10-25 00:16:20,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:20,986 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:20,987 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:20,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash -462507210, now seen corresponding path program 1 times [2018-10-25 00:16:20,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:20,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:20,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:20,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:20,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:21,560 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:16:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 257 proven. 44 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-25 00:16:21,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:21,831 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:21,831 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-10-25 00:16:21,831 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [562], [565], [569], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:21,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:21,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:29,079 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:29,080 INFO L272 AbstractInterpreter]: Visited 210 different actions 634 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:16:29,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:29,085 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:29,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:29,085 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:16:29,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:29,094 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:29,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 00:16:29,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 324 proven. 34 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-25 00:16:29,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:29,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:16:29,731 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:29,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:16:29,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:16:29,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:16:29,732 INFO L87 Difference]: Start difference. First operand 89827 states and 106236 transitions. Second operand 9 states. [2018-10-25 00:16:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:41,969 INFO L93 Difference]: Finished difference Result 286661 states and 353276 transitions. [2018-10-25 00:16:41,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-25 00:16:41,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 446 [2018-10-25 00:16:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:42,542 INFO L225 Difference]: With dead ends: 286661 [2018-10-25 00:16:42,542 INFO L226 Difference]: Without dead ends: 181859 [2018-10-25 00:16:42,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=474, Invalid=2282, Unknown=0, NotChecked=0, Total=2756 [2018-10-25 00:16:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181859 states. [2018-10-25 00:16:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181859 to 170060. [2018-10-25 00:16:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170060 states. [2018-10-25 00:16:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170060 states to 170060 states and 194512 transitions. [2018-10-25 00:16:46,376 INFO L78 Accepts]: Start accepts. Automaton has 170060 states and 194512 transitions. Word has length 446 [2018-10-25 00:16:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:46,376 INFO L481 AbstractCegarLoop]: Abstraction has 170060 states and 194512 transitions. [2018-10-25 00:16:46,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:16:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 170060 states and 194512 transitions. [2018-10-25 00:16:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-25 00:16:46,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:46,626 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-25 00:16:46,626 INFO L424 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:46,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash -968096671, now seen corresponding path program 1 times [2018-10-25 00:16:46,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:46,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:46,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:46,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:46,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:47,113 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:16:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 267 proven. 214 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-25 00:16:47,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:47,423 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:47,423 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 471 with the following transitions: [2018-10-25 00:16:47,423 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1077], [1079], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:47,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:47,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:49,611 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:16:49,611 INFO L272 AbstractInterpreter]: Visited 208 different actions 410 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:16:49,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:49,619 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:16:54,515 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 82.91% of their original sizes. [2018-10-25 00:16:54,515 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-25 00:17:07,536 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:07,541 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:07,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:07 BoogieIcfgContainer [2018-10-25 00:17:07,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:07,542 INFO L168 Benchmark]: Toolchain (without parser) took 219764.09 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,543 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-25 00:17:07,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1361.65 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,545 INFO L168 Benchmark]: Boogie Preprocessor took 133.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,546 INFO L168 Benchmark]: RCFGBuilder took 4553.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,547 INFO L168 Benchmark]: TraceAbstraction took 213407.75 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:07,551 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1361.65 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4553.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213407.75 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1620]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1620). Cancelled while BasicCegarLoop was analyzing trace of length 471 with TraceHistMax 5,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 109.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3182 SDtfs, 27149 SDslu, 4454 SDs, 0 SdLazy, 42523 SolverSat, 9231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 7251 GetRequests, 6893 SyntacticMatches, 14 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6050 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170060occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.1s AbstIntTime, 12 AbstIntIterations, 3 AbstIntStrong, 0.9991955423047182 AbsIntWeakeningRatio, 0.19880119880119881 AbsIntAvgWeakeningVarsNumRemoved, 14.512487512487512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 19633 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 7383 NumberOfCodeBlocks, 7383 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 10461 ConstructedInterpolants, 0 QuantifiedInterpolants, 8365750 SizeOfPredicates, 30 NumberOfNonLiveVariables, 12125 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 32 InterpolantComputations, 5 PerfectInterpolantSequences, 6260/6946 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown