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_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:30:28,484 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:30:28,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:30:28,508 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:30:28,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:30:28,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:30:28,511 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:30:28,513 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:30:28,516 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:30:28,517 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:30:28,517 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:30:28,518 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:30:28,519 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:30:28,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:30:28,522 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:30:28,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:30:28,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:30:28,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:30:28,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:30:28,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:30:28,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:30:28,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:30:28,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:30:28,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:30:28,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:30:28,552 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:30:28,553 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:30:28,557 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:30:28,558 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:30:28,561 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:30:28,561 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:30:28,562 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:30:28,565 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:30:28,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:30:28,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:30:28,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:30:28,593 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:30:28,593 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:30:28,593 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:30:28,594 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:30:28,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:30:28,594 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:30:28,594 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:30:28,594 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:30:28,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:30:28,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:30:28,595 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:30:28,596 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:30:28,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:30:28,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:30:28,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:30:28,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:30:28,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:30:28,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:30:28,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:30:28,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:30:28,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:30:28,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:30:28,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:30:28,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:30:28,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:30:28,598 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:30:28,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:30:28,599 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:30:28,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:30:28,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:30:28,599 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:30:28,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:30:28,600 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:30:28,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:30:28,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:30:28,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:30:28,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:30:28,687 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:30:28,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-10-25 01:30:28,752 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1eb58bf7/b9a600a6b3854c05a372545b138daae8/FLAG2b311011f [2018-10-25 01:30:29,434 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:30:29,436 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-10-25 01:30:29,452 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1eb58bf7/b9a600a6b3854c05a372545b138daae8/FLAG2b311011f [2018-10-25 01:30:29,471 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d1eb58bf7/b9a600a6b3854c05a372545b138daae8 [2018-10-25 01:30:29,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:30:29,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:30:29,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:29,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:30:29,491 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:30:29,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:29" (1/1) ... [2018-10-25 01:30:29,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155f52c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:29, skipping insertion in model container [2018-10-25 01:30:29,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:29" (1/1) ... [2018-10-25 01:30:29,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:30:29,601 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:30:30,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:30,228 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:30:30,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:30,451 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:30:30,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30 WrapperNode [2018-10-25 01:30:30,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:30,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:30,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:30:30,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:30:30,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:30,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:30:30,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:30:30,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:30:30,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... [2018-10-25 01:30:30,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:30:30,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:30:30,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:30:30,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:30:30,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:30:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:30:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:30:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:30:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:30:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:30:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:30:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:30:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:30:36,045 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:30:36,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:36 BoogieIcfgContainer [2018-10-25 01:30:36,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:30:36,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:30:36,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:30:36,051 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:30:36,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:30:29" (1/3) ... [2018-10-25 01:30:36,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddde82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:36, skipping insertion in model container [2018-10-25 01:30:36,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:30" (2/3) ... [2018-10-25 01:30:36,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddde82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:36, skipping insertion in model container [2018-10-25 01:30:36,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:36" (3/3) ... [2018-10-25 01:30:36,055 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28_true-unreach-call.c [2018-10-25 01:30:36,066 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:30:36,075 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:30:36,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:30:36,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:30:36,139 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:30:36,139 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:30:36,140 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:30:36,140 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:30:36,140 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:30:36,140 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:30:36,140 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:30:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:30:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-25 01:30:36,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:36,182 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] [2018-10-25 01:30:36,185 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:36,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash -718311439, now seen corresponding path program 1 times [2018-10-25 01:30:36,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:36,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:36,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:36,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:36,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:36,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:36,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:36,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:36,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:36,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:36,819 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:30:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:40,300 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-10-25 01:30:40,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:40,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-25 01:30:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:40,327 INFO L225 Difference]: With dead ends: 982 [2018-10-25 01:30:40,327 INFO L226 Difference]: Without dead ends: 683 [2018-10-25 01:30:40,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-25 01:30:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-25 01:30:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-25 01:30:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-10-25 01:30:40,453 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 55 [2018-10-25 01:30:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:40,454 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-10-25 01:30:40,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-10-25 01:30:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-25 01:30:40,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:40,468 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:40,469 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:40,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2084126164, now seen corresponding path program 1 times [2018-10-25 01:30:40,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:40,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:40,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:40,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:40,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:40,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:40,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:40,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:40,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:40,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:40,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:40,765 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-10-25 01:30:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:45,241 INFO L93 Difference]: Finished difference Result 2512 states and 3858 transitions. [2018-10-25 01:30:45,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:45,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-25 01:30:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:45,262 INFO L225 Difference]: With dead ends: 2512 [2018-10-25 01:30:45,262 INFO L226 Difference]: Without dead ends: 1835 [2018-10-25 01:30:45,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-10-25 01:30:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1820. [2018-10-25 01:30:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-10-25 01:30:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2585 transitions. [2018-10-25 01:30:45,363 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2585 transitions. Word has length 129 [2018-10-25 01:30:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:45,364 INFO L481 AbstractCegarLoop]: Abstraction has 1820 states and 2585 transitions. [2018-10-25 01:30:45,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2585 transitions. [2018-10-25 01:30:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-25 01:30:45,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:45,373 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:45,374 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:45,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash 643157075, now seen corresponding path program 1 times [2018-10-25 01:30:45,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:45,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:45,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:45,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:45,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:45,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:45,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:45,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:45,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:45,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:45,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:45,730 INFO L87 Difference]: Start difference. First operand 1820 states and 2585 transitions. Second operand 6 states. [2018-10-25 01:30:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:50,513 INFO L93 Difference]: Finished difference Result 6276 states and 9169 transitions. [2018-10-25 01:30:50,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:30:50,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-25 01:30:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:50,549 INFO L225 Difference]: With dead ends: 6276 [2018-10-25 01:30:50,550 INFO L226 Difference]: Without dead ends: 4462 [2018-10-25 01:30:50,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:30:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2018-10-25 01:30:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4307. [2018-10-25 01:30:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-10-25 01:30:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5764 transitions. [2018-10-25 01:30:50,737 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5764 transitions. Word has length 136 [2018-10-25 01:30:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:50,737 INFO L481 AbstractCegarLoop]: Abstraction has 4307 states and 5764 transitions. [2018-10-25 01:30:50,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:30:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5764 transitions. [2018-10-25 01:30:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-25 01:30:50,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:50,748 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:50,748 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:50,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1736454008, now seen corresponding path program 1 times [2018-10-25 01:30:50,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:50,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:50,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:50,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:50,750 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:30:51,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:51,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:51,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-25 01:30:51,161 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:51,215 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:51,216 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:52,190 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:30:52,192 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:30:52,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:52,235 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:30:52,969 INFO L232 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 73.68% of their original sizes. [2018-10-25 01:30:52,969 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:30:53,234 INFO L413 sIntCurrentIteration]: We have 209 unified AI predicates [2018-10-25 01:30:53,234 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:30:53,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:30:53,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-25 01:30:53,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:53,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:53,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:53,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:53,238 INFO L87 Difference]: Start difference. First operand 4307 states and 5764 transitions. Second operand 6 states. [2018-10-25 01:31:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:29,945 INFO L93 Difference]: Finished difference Result 8800 states and 11739 transitions. [2018-10-25 01:31:29,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:31:29,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-10-25 01:31:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:29,970 INFO L225 Difference]: With dead ends: 8800 [2018-10-25 01:31:29,970 INFO L226 Difference]: Without dead ends: 4499 [2018-10-25 01:31:29,987 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:31:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2018-10-25 01:31:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 4497. [2018-10-25 01:31:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2018-10-25 01:31:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5964 transitions. [2018-10-25 01:31:30,097 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5964 transitions. Word has length 210 [2018-10-25 01:31:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:30,097 INFO L481 AbstractCegarLoop]: Abstraction has 4497 states and 5964 transitions. [2018-10-25 01:31:30,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5964 transitions. [2018-10-25 01:31:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-25 01:31:30,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:30,107 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:30,108 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:30,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1439039131, now seen corresponding path program 1 times [2018-10-25 01:31:30,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:30,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:30,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:30,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:30,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-25 01:31:30,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:30,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:30,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-25 01:31:30,837 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [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], [538], [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], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:30,844 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:30,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:32,107 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:31:32,108 INFO L272 AbstractInterpreter]: Visited 126 different actions 497 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:31:32,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:32,116 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:31:32,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:32,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:31:32,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:32,127 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:31:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:32,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:31:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:32,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:31:33,067 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-25 01:31:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:33,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:31:33,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-25 01:31:33,313 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:31:33,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 01:31:33,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 01:31:33,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:31:33,316 INFO L87 Difference]: Start difference. First operand 4497 states and 5964 transitions. Second operand 10 states. [2018-10-25 01:31:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:53,410 INFO L93 Difference]: Finished difference Result 22663 states and 33283 transitions. [2018-10-25 01:31:53,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-25 01:31:53,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2018-10-25 01:31:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:53,531 INFO L225 Difference]: With dead ends: 22663 [2018-10-25 01:31:53,532 INFO L226 Difference]: Without dead ends: 18362 [2018-10-25 01:31:53,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 527 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=758, Invalid=3274, Unknown=0, NotChecked=0, Total=4032 [2018-10-25 01:31:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18362 states. [2018-10-25 01:31:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18362 to 17715. [2018-10-25 01:31:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17715 states. [2018-10-25 01:31:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17715 states to 17715 states and 22769 transitions. [2018-10-25 01:31:54,056 INFO L78 Accepts]: Start accepts. Automaton has 17715 states and 22769 transitions. Word has length 253 [2018-10-25 01:31:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:54,057 INFO L481 AbstractCegarLoop]: Abstraction has 17715 states and 22769 transitions. [2018-10-25 01:31:54,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-25 01:31:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 17715 states and 22769 transitions. [2018-10-25 01:31:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-25 01:31:54,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:54,084 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:54,084 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:54,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1247546700, now seen corresponding path program 1 times [2018-10-25 01:31:54,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:54,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:54,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:54,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:54,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-25 01:31:54,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:54,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:31:54,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:54,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:31:54,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:31:54,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:31:54,430 INFO L87 Difference]: Start difference. First operand 17715 states and 22769 transitions. Second operand 3 states. [2018-10-25 01:31:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:56,183 INFO L93 Difference]: Finished difference Result 39451 states and 51895 transitions. [2018-10-25 01:31:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:31:56,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-10-25 01:31:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:56,286 INFO L225 Difference]: With dead ends: 39451 [2018-10-25 01:31:56,286 INFO L226 Difference]: Without dead ends: 22121 [2018-10-25 01:31:56,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:31:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22121 states. [2018-10-25 01:31:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22121 to 21727. [2018-10-25 01:31:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21727 states. [2018-10-25 01:31:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21727 states to 21727 states and 27956 transitions. [2018-10-25 01:31:56,809 INFO L78 Accepts]: Start accepts. Automaton has 21727 states and 27956 transitions. Word has length 295 [2018-10-25 01:31:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:56,810 INFO L481 AbstractCegarLoop]: Abstraction has 21727 states and 27956 transitions. [2018-10-25 01:31:56,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:31:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 21727 states and 27956 transitions. [2018-10-25 01:31:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-25 01:31:56,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:56,847 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:56,847 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:56,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash 735034412, now seen corresponding path program 1 times [2018-10-25 01:31:56,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:56,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:56,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:56,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:56,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:57,952 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:31:58,223 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:31:58,711 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-10-25 01:31:59,291 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-25 01:31:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:59,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:59,831 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:59,831 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-25 01:31:59,832 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [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], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [873], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:59,838 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:59,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:01,242 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:01,244 INFO L272 AbstractInterpreter]: Visited 160 different actions 784 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:32:01,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:01,279 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:01,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:01,279 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-25 01:32:01,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:01,291 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:01,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:01,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:02,093 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-25 01:32:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:02,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:02,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-10-25 01:32:02,602 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:02,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-25 01:32:02,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-25 01:32:02,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-10-25 01:32:02,604 INFO L87 Difference]: Start difference. First operand 21727 states and 27956 transitions. Second operand 17 states. [2018-10-25 01:32:03,853 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-10-25 01:32:10,348 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-10-25 01:32:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:11,103 INFO L93 Difference]: Finished difference Result 42888 states and 58193 transitions. [2018-10-25 01:32:11,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-25 01:32:11,113 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 336 [2018-10-25 01:32:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:11,204 INFO L225 Difference]: With dead ends: 42888 [2018-10-25 01:32:11,205 INFO L226 Difference]: Without dead ends: 21548 [2018-10-25 01:32:11,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 681 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=775, Invalid=2305, Unknown=0, NotChecked=0, Total=3080 [2018-10-25 01:32:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2018-10-25 01:32:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 21061. [2018-10-25 01:32:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21061 states. [2018-10-25 01:32:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21061 states to 21061 states and 26888 transitions. [2018-10-25 01:32:11,778 INFO L78 Accepts]: Start accepts. Automaton has 21061 states and 26888 transitions. Word has length 336 [2018-10-25 01:32:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:11,779 INFO L481 AbstractCegarLoop]: Abstraction has 21061 states and 26888 transitions. [2018-10-25 01:32:11,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-25 01:32:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 21061 states and 26888 transitions. [2018-10-25 01:32:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-25 01:32:11,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:11,817 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:11,817 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:11,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash -214712118, now seen corresponding path program 1 times [2018-10-25 01:32:11,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:11,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:11,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:11,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:11,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:32:12,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:12,376 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:12,376 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-10-25 01:32:12,377 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [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], [645], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:12,381 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:12,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:13,679 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:13,679 INFO L272 AbstractInterpreter]: Visited 127 different actions 377 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:32:13,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:13,717 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:13,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:13,717 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:13,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:13,728 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:13,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:32:13,938 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:32:14,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:14,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 01:32:14,122 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:14,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:32:14,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:32:14,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:14,124 INFO L87 Difference]: Start difference. First operand 21061 states and 26888 transitions. Second operand 6 states. [2018-10-25 01:32:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:16,060 INFO L93 Difference]: Finished difference Result 39895 states and 52735 transitions. [2018-10-25 01:32:16,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:32:16,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2018-10-25 01:32:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:16,129 INFO L225 Difference]: With dead ends: 39895 [2018-10-25 01:32:16,129 INFO L226 Difference]: Without dead ends: 18014 [2018-10-25 01:32:16,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 707 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:32:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18014 states. [2018-10-25 01:32:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18014 to 16626. [2018-10-25 01:32:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16626 states. [2018-10-25 01:32:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 19988 transitions. [2018-10-25 01:32:16,463 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 19988 transitions. Word has length 353 [2018-10-25 01:32:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:16,464 INFO L481 AbstractCegarLoop]: Abstraction has 16626 states and 19988 transitions. [2018-10-25 01:32:16,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:32:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 19988 transitions. [2018-10-25 01:32:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-25 01:32:16,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:16,490 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:16,490 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:16,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 479556675, now seen corresponding path program 1 times [2018-10-25 01:32:16,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:16,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:16,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:16,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:16,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:17,071 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:32:17,298 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:32:17,500 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:32:17,774 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:32:18,111 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-25 01:32:18,497 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-25 01:32:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 120 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:19,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:19,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:19,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-10-25 01:32:19,037 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [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], [665], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:19,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:19,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:20,795 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:20,796 INFO L272 AbstractInterpreter]: Visited 127 different actions 381 times. Merged at 8 different actions 24 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 28 variables. [2018-10-25 01:32:20,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:20,797 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:20,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:20,797 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:20,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:20,806 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:20,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-25 01:32:21,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:21,413 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-25 01:32:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-25 01:32:22,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:22,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 23 [2018-10-25 01:32:22,001 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:22,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-25 01:32:22,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-25 01:32:22,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:32:22,003 INFO L87 Difference]: Start difference. First operand 16626 states and 19988 transitions. Second operand 21 states. [2018-10-25 01:32:25,494 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2018-10-25 01:32:27,426 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2018-10-25 01:32:27,609 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-10-25 01:32:43,340 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-10-25 01:32:48,618 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-25 01:32:53,153 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-25 01:32:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:56,484 INFO L93 Difference]: Finished difference Result 47119 states and 65454 transitions. [2018-10-25 01:32:56,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-25 01:32:56,484 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 357 [2018-10-25 01:32:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:56,607 INFO L225 Difference]: With dead ends: 47119 [2018-10-25 01:32:56,608 INFO L226 Difference]: Without dead ends: 27366 [2018-10-25 01:32:56,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 799 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8413 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2676, Invalid=19080, Unknown=0, NotChecked=0, Total=21756 [2018-10-25 01:32:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27366 states. [2018-10-25 01:32:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27366 to 24943. [2018-10-25 01:32:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24943 states. [2018-10-25 01:32:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 30351 transitions. [2018-10-25 01:32:57,468 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 30351 transitions. Word has length 357 [2018-10-25 01:32:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:57,468 INFO L481 AbstractCegarLoop]: Abstraction has 24943 states and 30351 transitions. [2018-10-25 01:32:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-25 01:32:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 30351 transitions. [2018-10-25 01:32:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-25 01:32:57,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:57,504 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:32:57,504 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:57,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1568936548, now seen corresponding path program 1 times [2018-10-25 01:32:57,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:57,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:57,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:57,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:57,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 250 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:32:58,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:58,737 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:58,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-10-25 01:32:58,738 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [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], [554], [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], [665], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:58,740 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:58,741 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:00,263 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:00,263 INFO L272 AbstractInterpreter]: Visited 127 different actions 507 times. Merged at 8 different actions 34 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 4 different actions. Largest state had 28 variables. [2018-10-25 01:33:00,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:00,297 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:00,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:00,297 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:00,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:00,305 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:00,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-25 01:33:01,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:01,389 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2018-10-25 01:33:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-25 01:33:01,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:01,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-10-25 01:33:01,891 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:01,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-25 01:33:01,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-25 01:33:01,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:33:01,892 INFO L87 Difference]: Start difference. First operand 24943 states and 30351 transitions. Second operand 19 states. [2018-10-25 01:33:03,025 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-10-25 01:33:05,174 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2018-10-25 01:33:11,150 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-25 01:33:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:20,008 INFO L93 Difference]: Finished difference Result 59515 states and 96228 transitions. [2018-10-25 01:33:20,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-25 01:33:20,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2018-10-25 01:33:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:20,388 INFO L225 Difference]: With dead ends: 59515 [2018-10-25 01:33:20,388 INFO L226 Difference]: Without dead ends: 32936 [2018-10-25 01:33:20,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 792 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3590 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1773, Invalid=8529, Unknown=0, NotChecked=0, Total=10302 [2018-10-25 01:33:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32936 states. [2018-10-25 01:33:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32936 to 27538. [2018-10-25 01:33:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27538 states. [2018-10-25 01:33:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27538 states to 27538 states and 33187 transitions. [2018-10-25 01:33:22,123 INFO L78 Accepts]: Start accepts. Automaton has 27538 states and 33187 transitions. Word has length 368 [2018-10-25 01:33:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:22,123 INFO L481 AbstractCegarLoop]: Abstraction has 27538 states and 33187 transitions. [2018-10-25 01:33:22,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-25 01:33:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 27538 states and 33187 transitions. [2018-10-25 01:33:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-10-25 01:33:22,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:22,153 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:33:22,153 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:22,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1394619589, now seen corresponding path program 1 times [2018-10-25 01:33:22,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:22,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:22,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 154 proven. 206 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-25 01:33:22,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:22,748 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:22,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 402 with the following transitions: [2018-10-25 01:33:22,748 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [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], [633], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:22,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:22,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:24,257 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:24,257 INFO L272 AbstractInterpreter]: Visited 142 different actions 708 times. Merged at 8 different actions 44 times. Widened at 1 different actions 3 times. Found 9 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:33:24,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:24,263 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:24,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:24,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:24,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:24,271 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:24,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:29,541 WARN L179 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-10-25 01:33:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-10-25 01:33:29,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 250 proven. 102 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-25 01:33:30,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:30,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2018-10-25 01:33:30,374 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:30,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:33:30,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:33:30,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110 [2018-10-25 01:33:30,376 INFO L87 Difference]: Start difference. First operand 27538 states and 33187 transitions. Second operand 9 states. [2018-10-25 01:33:35,590 WARN L179 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-10-25 01:33:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:52,502 INFO L93 Difference]: Finished difference Result 73493 states and 94102 transitions. [2018-10-25 01:33:52,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-25 01:33:52,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 401 [2018-10-25 01:33:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:52,917 INFO L225 Difference]: With dead ends: 73493 [2018-10-25 01:33:52,917 INFO L226 Difference]: Without dead ends: 46343 [2018-10-25 01:33:52,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 809 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=145, Invalid=359, Unknown=2, NotChecked=0, Total=506 [2018-10-25 01:33:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46343 states. [2018-10-25 01:33:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46343 to 44069. [2018-10-25 01:33:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44069 states. [2018-10-25 01:33:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44069 states to 44069 states and 53340 transitions. [2018-10-25 01:33:53,899 INFO L78 Accepts]: Start accepts. Automaton has 44069 states and 53340 transitions. Word has length 401 [2018-10-25 01:33:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:53,900 INFO L481 AbstractCegarLoop]: Abstraction has 44069 states and 53340 transitions. [2018-10-25 01:33:53,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:33:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 44069 states and 53340 transitions. [2018-10-25 01:33:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-25 01:33:53,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:53,933 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:33:53,933 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:53,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:53,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1275299725, now seen corresponding path program 1 times [2018-10-25 01:33:53,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:53,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:53,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:53,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:54,662 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:33:54,976 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:33:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-25 01:33:55,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:55,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:55,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-10-25 01:33:55,480 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [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], [653], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:55,483 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:55,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:56,979 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:56,979 INFO L272 AbstractInterpreter]: Visited 142 different actions 710 times. Merged at 8 different actions 46 times. Widened at 1 different actions 4 times. Found 9 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:33:57,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:57,014 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:57,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:57,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:57,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:57,022 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:57,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:57,732 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-10-25 01:33:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 465 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:58,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:58,327 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-25 01:33:58,458 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-25 01:33:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 359 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:59,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:59,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2018-10-25 01:33:59,133 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:59,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 01:33:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 01:33:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:33:59,134 INFO L87 Difference]: Start difference. First operand 44069 states and 53340 transitions. Second operand 13 states. [2018-10-25 01:34:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:08,883 INFO L93 Difference]: Finished difference Result 98789 states and 122325 transitions. [2018-10-25 01:34:08,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-25 01:34:08,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 406 [2018-10-25 01:34:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:09,054 INFO L225 Difference]: With dead ends: 98789 [2018-10-25 01:34:09,054 INFO L226 Difference]: Without dead ends: 58203 [2018-10-25 01:34:09,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 818 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2018-10-25 01:34:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58203 states. [2018-10-25 01:34:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58203 to 56252. [2018-10-25 01:34:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56252 states. Received shutdown request... [2018-10-25 01:34:10,856 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:34:10,863 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:34:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:34:10 BoogieIcfgContainer [2018-10-25 01:34:10,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:34:10,864 INFO L168 Benchmark]: Toolchain (without parser) took 221378.77 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-25 01:34:10,871 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:34:10,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 964.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:10,872 INFO L168 Benchmark]: Boogie Procedure Inliner took 318.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:10,874 INFO L168 Benchmark]: Boogie Preprocessor took 163.65 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:34:10,874 INFO L168 Benchmark]: RCFGBuilder took 5110.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.1 MB). Peak memory consumption was 190.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:10,875 INFO L168 Benchmark]: TraceAbstraction took 214816.18 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-25 01:34:10,881 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 964.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 318.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.65 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5110.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 190.1 MB). Peak memory consumption was 190.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214816.18 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while ReachableStatesComputation was computing reachable states (55685 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 214.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 168.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2458 SDtfs, 33080 SDslu, 5025 SDs, 0 SdLazy, 59615 SolverSat, 12839 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 118.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5808 GetRequests, 5351 SyntacticMatches, 15 SemanticMatches, 442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14530 ImplicationChecksByTransitivity, 37.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44069occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9977321801006012 AbsIntWeakeningRatio, 0.1339712918660287 AbsIntAvgWeakeningVarsNumRemoved, 18.272727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 13183 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 5773 NumberOfCodeBlocks, 5773 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8221 ConstructedInterpolants, 3 QuantifiedInterpolants, 15642571 SizeOfPredicates, 9 NumberOfNonLiveVariables, 4132 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 26 InterpolantComputations, 4 PerfectInterpolantSequences, 7084/8159 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown