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/Problem11_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:28:33,638 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:28:33,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:28:33,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:28:33,661 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:28:33,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:28:33,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:28:33,665 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:28:33,666 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:28:33,667 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:28:33,668 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:28:33,668 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:28:33,669 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:28:33,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:28:33,673 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:28:33,674 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:28:33,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:28:33,680 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:28:33,685 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:28:33,686 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:28:33,690 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:28:33,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:28:33,697 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:28:33,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:28:33,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:28:33,698 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:28:33,699 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:28:33,699 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:28:33,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:28:33,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:28:33,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:28:33,705 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:28:33,709 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 [2018-10-24 23:28:33,723 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:28:33,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:28:33,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:28:33,724 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:28:33,725 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:28:33,725 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:28:33,725 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:28:33,725 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:28:33,725 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:28:33,726 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:28:33,726 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:28:33,726 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:28:33,726 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:28:33,726 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:28:33,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:28:33,727 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:28:33,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:28:33,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:28:33,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:28:33,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:28:33,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:28:33,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:28:33,729 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:28:33,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:28:33,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:28:33,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:28:33,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:28:33,730 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:28:33,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:28:33,730 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:28:33,730 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:28:33,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:28:33,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:28:33,731 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:28:33,731 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:28:33,731 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:28:33,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:28:33,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:28:33,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:28:33,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:28:33,796 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:28:33,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label29_false-unreach-call.c [2018-10-24 23:28:33,858 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/637e2936f/0c438893c6d94369b14bf803883ba0db/FLAG97fc2f8bf [2018-10-24 23:28:34,453 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:28:34,455 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label29_false-unreach-call.c [2018-10-24 23:28:34,473 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/637e2936f/0c438893c6d94369b14bf803883ba0db/FLAG97fc2f8bf [2018-10-24 23:28:34,495 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/637e2936f/0c438893c6d94369b14bf803883ba0db [2018-10-24 23:28:34,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:28:34,512 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:28:34,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:28:34,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:28:34,523 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:28:34,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:34,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54abafb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:34, skipping insertion in model container [2018-10-24 23:28:34,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:28:34" (1/1) ... [2018-10-24 23:28:34,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:28:34,624 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:28:35,254 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:28:35,259 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:28:35,454 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:28:35,475 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:28:35,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35 WrapperNode [2018-10-24 23:28:35,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:28:35,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:28:35,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:28:35,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:28:35,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:28:35,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:28:35,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:28:35,814 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:28:35,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (1/1) ... [2018-10-24 23:28:35,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:28:35,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:28:35,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:28:35,943 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:28:35,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (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 23:28:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:28:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:28:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:28:36,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:28:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:28:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:28:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:28:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:28:40,947 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:28:40,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:28:40 BoogieIcfgContainer [2018-10-24 23:28:40,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:28:40,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:28:40,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:28:40,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:28:40,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:28:34" (1/3) ... [2018-10-24 23:28:40,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da5e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:28:40, skipping insertion in model container [2018-10-24 23:28:40,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:28:35" (2/3) ... [2018-10-24 23:28:40,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da5e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:28:40, skipping insertion in model container [2018-10-24 23:28:40,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:28:40" (3/3) ... [2018-10-24 23:28:40,957 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label29_false-unreach-call.c [2018-10-24 23:28:40,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:28:40,976 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:28:40,993 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:28:41,032 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:28:41,032 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:28:41,032 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:28:41,032 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:28:41,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:28:41,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:28:41,033 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:28:41,033 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:28:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 23:28:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 23:28:41,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:41,072 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] [2018-10-24 23:28:41,075 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:41,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:41,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1657837633, now seen corresponding path program 1 times [2018-10-24 23:28:41,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:41,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:41,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:41,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:41,543 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:28:41,597 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 23:28:41,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:41,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:28:41,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:41,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:28:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:28:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:28:41,622 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 23:28:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:44,101 INFO L93 Difference]: Finished difference Result 785 states and 1378 transitions. [2018-10-24 23:28:44,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:28:44,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-10-24 23:28:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:44,127 INFO L225 Difference]: With dead ends: 785 [2018-10-24 23:28:44,127 INFO L226 Difference]: Without dead ends: 490 [2018-10-24 23:28:44,138 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 [2018-10-24 23:28:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-10-24 23:28:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2018-10-24 23:28:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 23:28:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 841 transitions. [2018-10-24 23:28:44,225 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 841 transitions. Word has length 27 [2018-10-24 23:28:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:44,226 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 841 transitions. [2018-10-24 23:28:44,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:28:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 841 transitions. [2018-10-24 23:28:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 23:28:44,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:44,233 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:28:44,234 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:44,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1966736396, now seen corresponding path program 1 times [2018-10-24 23:28:44,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:44,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:44,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:44,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:44,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:44,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:44,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:28:44,583 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:44,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:28:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:28:44,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:28:44,587 INFO L87 Difference]: Start difference. First operand 482 states and 841 transitions. Second operand 6 states. [2018-10-24 23:28:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:50,875 INFO L93 Difference]: Finished difference Result 1761 states and 3209 transitions. [2018-10-24 23:28:50,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 23:28:50,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-24 23:28:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:50,889 INFO L225 Difference]: With dead ends: 1761 [2018-10-24 23:28:50,889 INFO L226 Difference]: Without dead ends: 1285 [2018-10-24 23:28:50,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:28:50,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2018-10-24 23:28:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1253. [2018-10-24 23:28:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2018-10-24 23:28:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1989 transitions. [2018-10-24 23:28:50,966 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1989 transitions. Word has length 97 [2018-10-24 23:28:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:50,967 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 1989 transitions. [2018-10-24 23:28:50,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:28:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1989 transitions. [2018-10-24 23:28:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 23:28:50,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:50,973 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:28:50,973 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:50,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1683891539, now seen corresponding path program 1 times [2018-10-24 23:28:50,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:50,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:50,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:50,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:50,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:51,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:51,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:28:51,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:51,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:28:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:28:51,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:28:51,272 INFO L87 Difference]: Start difference. First operand 1253 states and 1989 transitions. Second operand 6 states. [2018-10-24 23:28:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:28:54,316 INFO L93 Difference]: Finished difference Result 3468 states and 5572 transitions. [2018-10-24 23:28:54,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:28:54,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-24 23:28:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:28:54,338 INFO L225 Difference]: With dead ends: 3468 [2018-10-24 23:28:54,338 INFO L226 Difference]: Without dead ends: 2221 [2018-10-24 23:28:54,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:28:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-10-24 23:28:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2196. [2018-10-24 23:28:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2018-10-24 23:28:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3228 transitions. [2018-10-24 23:28:54,429 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3228 transitions. Word has length 100 [2018-10-24 23:28:54,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:28:54,429 INFO L481 AbstractCegarLoop]: Abstraction has 2196 states and 3228 transitions. [2018-10-24 23:28:54,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:28:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3228 transitions. [2018-10-24 23:28:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 23:28:54,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:28:54,437 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:28:54,437 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:28:54,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:28:54,438 INFO L82 PathProgramCache]: Analyzing trace with hash 353905340, now seen corresponding path program 1 times [2018-10-24 23:28:54,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:28:54,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:54,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:28:54,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:28:54,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:28:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:28:54,928 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-24 23:28:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:28:54,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:28:54,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 23:28:54,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:28:54,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:28:54,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:28:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:28:54,977 INFO L87 Difference]: Start difference. First operand 2196 states and 3228 transitions. Second operand 7 states. [2018-10-24 23:29:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:29:02,533 INFO L93 Difference]: Finished difference Result 5928 states and 8995 transitions. [2018-10-24 23:29:02,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:29:02,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-10-24 23:29:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:29:02,563 INFO L225 Difference]: With dead ends: 5928 [2018-10-24 23:29:02,563 INFO L226 Difference]: Without dead ends: 3738 [2018-10-24 23:29:02,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:29:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2018-10-24 23:29:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3564. [2018-10-24 23:29:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2018-10-24 23:29:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4994 transitions. [2018-10-24 23:29:02,771 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4994 transitions. Word has length 101 [2018-10-24 23:29:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:29:02,772 INFO L481 AbstractCegarLoop]: Abstraction has 3564 states and 4994 transitions. [2018-10-24 23:29:02,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 23:29:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4994 transitions. [2018-10-24 23:29:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 23:29:02,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:29:02,777 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:29:02,777 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:29:02,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:29:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash 400123299, now seen corresponding path program 1 times [2018-10-24 23:29:02,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:29:02,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:02,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:29:02,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:02,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:29:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:29:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:29:02,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:29:02,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:29:02,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:29:02,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:29:02,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:29:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:29:02,958 INFO L87 Difference]: Start difference. First operand 3564 states and 4994 transitions. Second operand 3 states. [2018-10-24 23:29:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:29:05,799 INFO L93 Difference]: Finished difference Result 8045 states and 11702 transitions. [2018-10-24 23:29:05,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:29:05,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-10-24 23:29:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:29:05,825 INFO L225 Difference]: With dead ends: 8045 [2018-10-24 23:29:05,825 INFO L226 Difference]: Without dead ends: 4487 [2018-10-24 23:29:05,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:29:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2018-10-24 23:29:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4426. [2018-10-24 23:29:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4426 states. [2018-10-24 23:29:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 5874 transitions. [2018-10-24 23:29:05,950 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 5874 transitions. Word has length 159 [2018-10-24 23:29:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:29:05,951 INFO L481 AbstractCegarLoop]: Abstraction has 4426 states and 5874 transitions. [2018-10-24 23:29:05,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:29:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 5874 transitions. [2018-10-24 23:29:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 23:29:05,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:29:05,954 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:29:05,954 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:29:05,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:29:05,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1875107130, now seen corresponding path program 1 times [2018-10-24 23:29:05,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:29:05,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:05,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:29:05,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:29:05,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:29:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:29:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 23:29:06,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:29:06,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:29:06,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-10-24 23:29:06,406 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:29:06,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:29:06,481 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:29:07,469 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:29:07,472 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 23:29:07,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:29:07,504 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:29:08,374 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 76.58% of their original sizes. [2018-10-24 23:29:08,375 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:29:09,393 INFO L413 sIntCurrentIteration]: We have 174 unified AI predicates [2018-10-24 23:29:09,393 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:29:09,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:29:09,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2018-10-24 23:29:09,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:29:09,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 23:29:09,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 23:29:09,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-10-24 23:29:09,396 INFO L87 Difference]: Start difference. First operand 4426 states and 5874 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 23:32:47,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 23:32:47,830 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:32:47,835 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:32:47,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:32:47 BoogieIcfgContainer [2018-10-24 23:32:47,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:32:47,837 INFO L168 Benchmark]: Toolchain (without parser) took 253325.62 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -593.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 23:32:47,839 INFO L168 Benchmark]: CDTParser took 0.19 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 23:32:47,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 960.63 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:32:47,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 336.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 695.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -791.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:32:47,841 INFO L168 Benchmark]: Boogie Preprocessor took 128.11 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:32:47,842 INFO L168 Benchmark]: RCFGBuilder took 5005.80 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: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:32:47,843 INFO L168 Benchmark]: TraceAbstraction took 246886.54 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -64.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 23:32:47,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 960.63 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 336.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 695.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -791.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.11 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5005.80 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: 198.0 MB). Peak memory consumption was 198.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246886.54 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -64.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (4426states) and FLOYD_HOARE automaton (currently 19 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (5012 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 246.8s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 240.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 943 SDtfs, 4817 SDslu, 890 SDs, 0 SdLazy, 9897 SolverSat, 1646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 219.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 222 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4426occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977357795461244 AbsIntWeakeningRatio, 0.12643678160919541 AbsIntAvgWeakeningVarsNumRemoved, 0.3390804597701149 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 300 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 659 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 359767 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 84/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown