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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:46:01,589 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:46:01,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:46:01,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:46:01,613 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:46:01,614 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:46:01,616 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:46:01,618 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:46:01,620 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:46:01,621 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:46:01,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:46:01,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:46:01,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:46:01,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:46:01,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:46:01,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:46:01,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:46:01,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:46:01,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:46:01,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:46:01,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:46:01,636 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:46:01,638 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:46:01,639 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:46:01,639 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:46:01,640 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:46:01,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:46:01,642 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:46:01,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:46:01,646 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:46:01,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:46:01,647 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:46:01,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:46:01,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:46:01,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:46:01,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:46:01,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:46:01,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:46:01,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:46:01,688 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:46:01,688 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:46:01,688 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:46:01,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:46:01,689 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:46:01,691 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:46:01,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:46:01,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:46:01,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:46:01,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:46:01,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:46:01,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:46:01,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:46:01,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:46:01,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:46:01,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:46:01,693 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:46:01,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:46:01,694 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:46:01,694 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:46:01,694 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:46:01,695 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:46:01,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:46:01,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:46:01,695 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:46:01,695 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:46:01,696 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:46:01,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:46:01,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:46:01,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:46:01,789 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:46:01,790 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:46:01,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c [2018-10-24 19:46:01,872 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d797e0083/c66b1d382605411a9c819f6bd01da92b/FLAGda16aed43 [2018-10-24 19:46:02,647 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:46:02,648 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label42_true-unreach-call.c [2018-10-24 19:46:02,676 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d797e0083/c66b1d382605411a9c819f6bd01da92b/FLAGda16aed43 [2018-10-24 19:46:02,697 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d797e0083/c66b1d382605411a9c819f6bd01da92b [2018-10-24 19:46:02,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:46:02,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:46:02,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:46:02,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:46:02,717 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:46:02,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:46:02" (1/1) ... [2018-10-24 19:46:02,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b65f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:02, skipping insertion in model container [2018-10-24 19:46:02,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:46:02" (1/1) ... [2018-10-24 19:46:02,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:46:02,826 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:46:03,523 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:46:03,529 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:46:03,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:46:03,901 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:46:03,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03 WrapperNode [2018-10-24 19:46:03,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:46:03,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:46:03,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:46:03,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:46:03,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:03,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:46:04,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:46:04,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:46:04,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:46:04,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (1/1) ... [2018-10-24 19:46:04,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:46:04,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:46:04,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:46:04,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:46:04,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (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 [2018-10-24 19:46:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:46:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:46:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:46:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:46:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:46:04,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:46:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:46:04,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:46:09,895 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:46:09,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:46:09 BoogieIcfgContainer [2018-10-24 19:46:09,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:46:09,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:46:09,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:46:09,902 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:46:09,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:46:02" (1/3) ... [2018-10-24 19:46:09,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a9a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:46:09, skipping insertion in model container [2018-10-24 19:46:09,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:46:03" (2/3) ... [2018-10-24 19:46:09,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a9a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:46:09, skipping insertion in model container [2018-10-24 19:46:09,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:46:09" (3/3) ... [2018-10-24 19:46:09,907 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label42_true-unreach-call.c [2018-10-24 19:46:09,918 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:46:09,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:46:09,949 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:46:09,996 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:46:09,996 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:46:09,997 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:46:09,997 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:46:09,997 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:46:09,997 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:46:09,997 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:46:09,998 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:46:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:46:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 19:46:10,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:46:10,067 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, 1] [2018-10-24 19:46:10,070 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:46:10,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:46:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1722479500, now seen corresponding path program 1 times [2018-10-24 19:46:10,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:46:10,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:10,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:46:10,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:10,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:46:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:46:11,055 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:46:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:46:11,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:46:11,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:46:11,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:46:11,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:46:11,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:46:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:46:11,307 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 19:46:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:46:15,354 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-10-24 19:46:15,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:46:15,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-10-24 19:46:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:46:15,385 INFO L225 Difference]: With dead ends: 1080 [2018-10-24 19:46:15,385 INFO L226 Difference]: Without dead ends: 762 [2018-10-24 19:46:15,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:46:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-10-24 19:46:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-10-24 19:46:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-24 19:46:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-24 19:46:15,492 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 203 [2018-10-24 19:46:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:46:15,493 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-24 19:46:15,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:46:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-24 19:46:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 19:46:15,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:46:15,504 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:46:15,504 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:46:15,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:46:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash 951455952, now seen corresponding path program 1 times [2018-10-24 19:46:15,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:46:15,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:15,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:46:15,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:15,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:46:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:46:15,867 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:46:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:46:16,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:46:16,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 19:46:16,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:46:16,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:46:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:46:16,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:46:16,087 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 7 states. [2018-10-24 19:46:20,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:46:20,022 INFO L93 Difference]: Finished difference Result 1609 states and 2945 transitions. [2018-10-24 19:46:20,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 19:46:20,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-10-24 19:46:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:46:20,046 INFO L225 Difference]: With dead ends: 1609 [2018-10-24 19:46:20,046 INFO L226 Difference]: Without dead ends: 1095 [2018-10-24 19:46:20,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:46:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-10-24 19:46:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1030. [2018-10-24 19:46:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2018-10-24 19:46:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1816 transitions. [2018-10-24 19:46:20,170 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1816 transitions. Word has length 220 [2018-10-24 19:46:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:46:20,171 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1816 transitions. [2018-10-24 19:46:20,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:46:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1816 transitions. [2018-10-24 19:46:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 19:46:20,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:46:20,179 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:46:20,179 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:46:20,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:46:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1564649131, now seen corresponding path program 1 times [2018-10-24 19:46:20,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:46:20,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:20,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:46:20,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:20,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:46:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:46:20,468 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:46:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:46:20,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:46:20,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:46:20,767 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:46:20,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:46:20,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:46:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:46:20,770 INFO L87 Difference]: Start difference. First operand 1030 states and 1816 transitions. Second operand 6 states. [2018-10-24 19:46:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:46:24,505 INFO L93 Difference]: Finished difference Result 3134 states and 5772 transitions. [2018-10-24 19:46:24,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:46:24,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-10-24 19:46:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:46:24,529 INFO L225 Difference]: With dead ends: 3134 [2018-10-24 19:46:24,529 INFO L226 Difference]: Without dead ends: 2110 [2018-10-24 19:46:24,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:46:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-10-24 19:46:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2036. [2018-10-24 19:46:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-10-24 19:46:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3605 transitions. [2018-10-24 19:46:24,665 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3605 transitions. Word has length 221 [2018-10-24 19:46:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:46:24,666 INFO L481 AbstractCegarLoop]: Abstraction has 2036 states and 3605 transitions. [2018-10-24 19:46:24,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:46:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3605 transitions. [2018-10-24 19:46:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-24 19:46:24,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:46:24,679 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:46:24,680 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:46:24,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:46:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash -767863881, now seen corresponding path program 1 times [2018-10-24 19:46:24,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:46:24,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:24,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:46:24,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:46:24,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:46:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:46:24,997 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:46:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:46:25,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:46:25,186 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:46:25,187 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-10-24 19:46:25,190 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [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], [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], [1081], [1085], [1087], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:46:25,310 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:46:25,311 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:50:37,098 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:50:37,099 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:50:37,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:50:37,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:50:37,101 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 [2018-10-24 19:50:37,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:50:37,111 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:50:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:50:37,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:50:37,374 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:50:37,575 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:50:37,576 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:50:37,584 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:50:37,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:50:37 BoogieIcfgContainer [2018-10-24 19:50:37,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:50:37,586 INFO L168 Benchmark]: Toolchain (without parser) took 274875.42 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -660.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,594 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 19:50:37,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1190.34 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 363.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -847.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,600 INFO L168 Benchmark]: Boogie Preprocessor took 199.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,603 INFO L168 Benchmark]: RCFGBuilder took 5427.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,604 INFO L168 Benchmark]: TraceAbstraction took 267687.37 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -164.2 MB). Peak memory consumption was 960.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:50:37,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1190.34 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 363.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -847.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 199.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5427.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267687.37 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -164.2 MB). Peak memory consumption was 960.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1623]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1623). Cancelled while BasicCegarLoop was analyzing trace of length 231 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 267.5s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 11.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 453 SDtfs, 2879 SDslu, 705 SDs, 0 SdLazy, 3781 SolverSat, 712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2036occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 251.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 381 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 644 NumberOfCodeBlocks, 644 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 508877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 29/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown