java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem14_label45_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:01:18,374 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:01:18,376 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:01:18,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:01:18,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:01:18,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:01:18,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:01:18,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:01:18,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:01:18,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:01:18,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:01:18,398 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:01:18,399 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:01:18,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:01:18,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:01:18,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:01:18,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:01:18,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:01:18,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:01:18,408 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:01:18,409 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:01:18,410 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:01:18,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:01:18,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:01:18,414 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:01:18,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:01:18,416 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:01:18,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:01:18,417 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:01:18,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:01:18,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:01:18,420 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:01:18,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:01:18,444 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:01:18,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:01:18,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:01:18,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:01:18,446 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:01:18,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:01:18,446 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:01:18,447 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:01:18,448 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:01:18,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:01:18,449 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:01:18,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:01:18,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:01:18,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:01:18,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:01:18,450 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:01:18,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:01:18,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:01:18,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:01:18,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:01:18,451 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:01:18,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:18,451 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:01:18,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:01:18,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:01:18,452 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:01:18,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:01:18,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:01:18,452 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:01:18,452 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:01:18,453 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:01:18,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:01:18,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:01:18,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:01:18,521 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:01:18,521 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:01:18,522 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c [2018-11-07 09:01:18,610 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214f9ebdd/6713f276bc784967a12014206c73fb3b/FLAG40bd8096b [2018-11-07 09:01:19,272 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:01:19,273 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c [2018-11-07 09:01:19,299 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214f9ebdd/6713f276bc784967a12014206c73fb3b/FLAG40bd8096b [2018-11-07 09:01:19,320 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214f9ebdd/6713f276bc784967a12014206c73fb3b [2018-11-07 09:01:19,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:01:19,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:01:19,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:19,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:01:19,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:01:19,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:19" (1/1) ... [2018-11-07 09:01:19,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:19, skipping insertion in model container [2018-11-07 09:01:19,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:19" (1/1) ... [2018-11-07 09:01:19,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:01:19,420 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:01:19,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:19,956 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:01:20,154 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:20,177 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:01:20,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20 WrapperNode [2018-11-07 09:01:20,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:20,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:20,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:01:20,179 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:01:20,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:20,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:01:20,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:01:20,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:01:20,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... [2018-11-07 09:01:20,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:01:20,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:01:20,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:01:20,519 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:01:20,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:01:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:01:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:01:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:01:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:01:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:01:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:01:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:01:20,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:01:24,117 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:01:24,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:24 BoogieIcfgContainer [2018-11-07 09:01:24,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:01:24,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:01:24,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:01:24,123 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:01:24,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:01:19" (1/3) ... [2018-11-07 09:01:24,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:24, skipping insertion in model container [2018-11-07 09:01:24,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:20" (2/3) ... [2018-11-07 09:01:24,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:24, skipping insertion in model container [2018-11-07 09:01:24,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:24" (3/3) ... [2018-11-07 09:01:24,127 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label45_true-unreach-call_false-termination.c [2018-11-07 09:01:24,137 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:01:24,145 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:01:24,160 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:01:24,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:01:24,207 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:01:24,207 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:01:24,207 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:01:24,207 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:01:24,207 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:01:24,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:01:24,208 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:01:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 09:01:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 09:01:24,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:24,261 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] [2018-11-07 09:01:24,264 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:24,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:24,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1525638783, now seen corresponding path program 1 times [2018-11-07 09:01:24,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:24,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:24,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:24,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:24,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:24,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:24,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:01:24,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:24,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:01:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:01:24,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:24,700 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 09:01:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:28,003 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 09:01:28,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:01:28,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-07 09:01:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:28,029 INFO L225 Difference]: With dead ends: 894 [2018-11-07 09:01:28,029 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 09:01:28,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 09:01:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 09:01:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 09:01:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 09:01:28,142 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 43 [2018-11-07 09:01:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:28,143 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 09:01:28,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:01:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 09:01:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 09:01:28,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:28,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:28,151 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:28,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:28,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2115089016, now seen corresponding path program 1 times [2018-11-07 09:01:28,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:28,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:28,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:28,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:28,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:28,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:28,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:01:28,425 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:28,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:01:28,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:01:28,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:28,429 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 09:01:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:31,385 INFO L93 Difference]: Finished difference Result 1594 states and 2534 transitions. [2018-11-07 09:01:31,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:01:31,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-11-07 09:01:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:31,401 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 09:01:31,401 INFO L226 Difference]: Without dead ends: 780 [2018-11-07 09:01:31,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-07 09:01:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-07 09:01:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-07 09:01:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1153 transitions. [2018-11-07 09:01:31,469 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1153 transitions. Word has length 127 [2018-11-07 09:01:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:31,470 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1153 transitions. [2018-11-07 09:01:31,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:01:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1153 transitions. [2018-11-07 09:01:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 09:01:31,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:31,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:31,475 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:31,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash -385622320, now seen corresponding path program 1 times [2018-11-07 09:01:31,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:31,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:31,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:31,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:31,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:31,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:31,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:01:31,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:31,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:01:31,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:01:31,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:31,739 INFO L87 Difference]: Start difference. First operand 780 states and 1153 transitions. Second operand 4 states. [2018-11-07 09:01:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:34,307 INFO L93 Difference]: Finished difference Result 3018 states and 4609 transitions. [2018-11-07 09:01:34,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:01:34,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-07 09:01:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:34,327 INFO L225 Difference]: With dead ends: 3018 [2018-11-07 09:01:34,327 INFO L226 Difference]: Without dead ends: 2244 [2018-11-07 09:01:34,337 INFO L604 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 [2018-11-07 09:01:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-11-07 09:01:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-11-07 09:01:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 09:01:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3156 transitions. [2018-11-07 09:01:34,430 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3156 transitions. Word has length 139 [2018-11-07 09:01:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:34,430 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3156 transitions. [2018-11-07 09:01:34,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:01:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3156 transitions. [2018-11-07 09:01:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-11-07 09:01:34,441 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:34,441 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:01:34,442 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:34,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:34,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1047456719, now seen corresponding path program 1 times [2018-11-07 09:01:34,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:34,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:34,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:34,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:34,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:34,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:34,758 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:34,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-11-07 09:01:34,762 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:34,812 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:34,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:35,345 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:01:35,347 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:01:35,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:35,395 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:01:35,911 INFO L227 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-07 09:01:35,912 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:01:36,163 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-11-07 09:01:36,164 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:01:36,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:01:36,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:01:36,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:36,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:01:36,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:01:36,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:01:36,167 INFO L87 Difference]: Start difference. First operand 2244 states and 3156 transitions. Second operand 6 states. [2018-11-07 09:02:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:02,753 INFO L93 Difference]: Finished difference Result 4667 states and 6540 transitions. [2018-11-07 09:02:02,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:02:02,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2018-11-07 09:02:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:02,768 INFO L225 Difference]: With dead ends: 4667 [2018-11-07 09:02:02,769 INFO L226 Difference]: Without dead ends: 2429 [2018-11-07 09:02:02,782 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:02:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-11-07 09:02:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-11-07 09:02:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-11-07 09:02:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3347 transitions. [2018-11-07 09:02:02,849 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3347 transitions. Word has length 259 [2018-11-07 09:02:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:02,849 INFO L480 AbstractCegarLoop]: Abstraction has 2427 states and 3347 transitions. [2018-11-07 09:02:02,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:02:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3347 transitions. [2018-11-07 09:02:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-11-07 09:02:02,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:02,861 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:02:02,861 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:02,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash -643952831, now seen corresponding path program 1 times [2018-11-07 09:02:02,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:02,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:02,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:02,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:02,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:03,453 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 09:02:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 196 proven. 173 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:02:03,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:03,845 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:03,845 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-11-07 09:02:03,846 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:03,852 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:03,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:04,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:02:04,012 INFO L272 AbstractInterpreter]: Visited 129 different actions 251 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:02:04,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:04,048 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:02:04,415 INFO L227 lantSequenceWeakener]: Weakened 341 states. On average, predicates are now at 77.71% of their original sizes. [2018-11-07 09:02:04,415 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:02:04,810 INFO L415 sIntCurrentIteration]: We unified 343 AI predicates to 343 [2018-11-07 09:02:04,810 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:02:04,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:02:04,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 09:02:04,811 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:04,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:02:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:02:04,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:02:04,813 INFO L87 Difference]: Start difference. First operand 2427 states and 3347 transitions. Second operand 10 states. [2018-11-07 09:02:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:56,101 INFO L93 Difference]: Finished difference Result 5407 states and 7359 transitions. [2018-11-07 09:02:56,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:02:56,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2018-11-07 09:02:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:56,116 INFO L225 Difference]: With dead ends: 5407 [2018-11-07 09:02:56,116 INFO L226 Difference]: Without dead ends: 2799 [2018-11-07 09:02:56,131 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:02:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2018-11-07 09:02:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2797. [2018-11-07 09:02:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2018-11-07 09:02:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3748 transitions. [2018-11-07 09:02:56,202 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3748 transitions. Word has length 344 [2018-11-07 09:02:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:56,203 INFO L480 AbstractCegarLoop]: Abstraction has 2797 states and 3748 transitions. [2018-11-07 09:02:56,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:02:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3748 transitions. [2018-11-07 09:02:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-11-07 09:02:56,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:56,216 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:02:56,216 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:56,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:56,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1536953169, now seen corresponding path program 1 times [2018-11-07 09:02:56,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:56,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:56,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:56,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:56,218 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:56,617 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:02:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 246 proven. 124 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 09:02:57,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:57,220 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:57,220 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 385 with the following transitions: [2018-11-07 09:02:57,221 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:57,225 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:57,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:02,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:02,032 INFO L272 AbstractInterpreter]: Visited 129 different actions 386 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:03:02,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:02,039 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:02,861 INFO L227 lantSequenceWeakener]: Weakened 381 states. On average, predicates are now at 80.35% of their original sizes. [2018-11-07 09:03:02,861 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:02,929 INFO L415 sIntCurrentIteration]: We unified 383 AI predicates to 383 [2018-11-07 09:03:02,929 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:02,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:02,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 09:03:02,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:02,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:03:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:03:02,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:03:02,931 INFO L87 Difference]: Start difference. First operand 2797 states and 3748 transitions. Second operand 9 states. [2018-11-07 09:03:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:28,705 INFO L93 Difference]: Finished difference Result 6500 states and 8933 transitions. [2018-11-07 09:03:28,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:03:28,706 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 384 [2018-11-07 09:03:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:28,725 INFO L225 Difference]: With dead ends: 6500 [2018-11-07 09:03:28,726 INFO L226 Difference]: Without dead ends: 3892 [2018-11-07 09:03:28,741 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 390 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:03:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2018-11-07 09:03:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3870. [2018-11-07 09:03:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3870 states. [2018-11-07 09:03:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5035 transitions. [2018-11-07 09:03:28,834 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5035 transitions. Word has length 384 [2018-11-07 09:03:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:28,835 INFO L480 AbstractCegarLoop]: Abstraction has 3870 states and 5035 transitions. [2018-11-07 09:03:28,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:03:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5035 transitions. [2018-11-07 09:03:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-11-07 09:03:28,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:28,854 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 09:03:28,854 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:28,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:28,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1266032232, now seen corresponding path program 1 times [2018-11-07 09:03:28,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:28,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:28,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:28,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:28,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:30,061 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 09:03:30,440 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 09:03:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 327 proven. 233 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:03:30,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:30,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:30,974 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 445 with the following transitions: [2018-11-07 09:03:30,974 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:30,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:30,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:31,139 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:31,139 INFO L272 AbstractInterpreter]: Visited 130 different actions 254 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:03:31,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:31,141 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:31,521 INFO L227 lantSequenceWeakener]: Weakened 441 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-07 09:03:31,522 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:31,634 INFO L415 sIntCurrentIteration]: We unified 443 AI predicates to 443 [2018-11-07 09:03:31,634 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:31,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:31,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 09:03:31,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:31,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:03:31,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:03:31,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:03:31,636 INFO L87 Difference]: Start difference. First operand 3870 states and 5035 transitions. Second operand 10 states. [2018-11-07 09:03:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:42,724 INFO L93 Difference]: Finished difference Result 7185 states and 9493 transitions. [2018-11-07 09:03:42,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:03:42,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 444 [2018-11-07 09:03:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:42,739 INFO L225 Difference]: With dead ends: 7185 [2018-11-07 09:03:42,740 INFO L226 Difference]: Without dead ends: 3689 [2018-11-07 09:03:42,754 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 451 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:03:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2018-11-07 09:03:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3686. [2018-11-07 09:03:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-11-07 09:03:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4832 transitions. [2018-11-07 09:03:42,857 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4832 transitions. Word has length 444 [2018-11-07 09:03:42,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:42,858 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 4832 transitions. [2018-11-07 09:03:42,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:03:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4832 transitions. [2018-11-07 09:03:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-11-07 09:03:42,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:42,875 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:42,876 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:42,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1878977812, now seen corresponding path program 1 times [2018-11-07 09:03:42,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:42,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:42,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:42,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:42,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-11-07 09:03:43,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:43,380 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:43,381 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-11-07 09:03:43,381 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:43,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:43,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:48,510 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:03:48,510 INFO L272 AbstractInterpreter]: Visited 131 different actions 518 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:03:48,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:48,519 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:03:48,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:48,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:03:48,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:48,533 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:03:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:48,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:03:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-11-07 09:03:49,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:03:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-11-07 09:03:49,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:03:49,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:03:49,958 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:03:49,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:03:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:03:49,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:03:49,961 INFO L87 Difference]: Start difference. First operand 3686 states and 4832 transitions. Second operand 9 states. [2018-11-07 09:03:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:53,776 INFO L93 Difference]: Finished difference Result 8728 states and 12721 transitions. [2018-11-07 09:03:53,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:03:53,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 458 [2018-11-07 09:03:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:53,816 INFO L225 Difference]: With dead ends: 8728 [2018-11-07 09:03:53,817 INFO L226 Difference]: Without dead ends: 5416 [2018-11-07 09:03:53,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 917 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:03:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2018-11-07 09:03:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5287. [2018-11-07 09:03:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2018-11-07 09:03:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7051 transitions. [2018-11-07 09:03:54,133 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7051 transitions. Word has length 458 [2018-11-07 09:03:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:54,134 INFO L480 AbstractCegarLoop]: Abstraction has 5287 states and 7051 transitions. [2018-11-07 09:03:54,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:03:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7051 transitions. [2018-11-07 09:03:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-11-07 09:03:54,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:54,153 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:54,153 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:54,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1668643611, now seen corresponding path program 1 times [2018-11-07 09:03:54,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:54,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:54,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:54,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:54,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 341 proven. 136 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-11-07 09:03:55,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:55,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:55,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 551 with the following transitions: [2018-11-07 09:03:55,117 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [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], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:55,120 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:55,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:01,320 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:01,321 INFO L272 AbstractInterpreter]: Visited 132 different actions 524 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:01,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:01,329 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:01,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:01,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:01,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:01,345 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:01,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 800 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-11-07 09:04:01,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 341 proven. 136 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2018-11-07 09:04:02,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:02,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 09:04:02,282 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:02,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:04:02,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:04:02,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:04:02,284 INFO L87 Difference]: Start difference. First operand 5287 states and 7051 transitions. Second operand 10 states. [2018-11-07 09:04:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:07,343 INFO L93 Difference]: Finished difference Result 12916 states and 18207 transitions. [2018-11-07 09:04:07,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 09:04:07,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 550 [2018-11-07 09:04:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:07,402 INFO L225 Difference]: With dead ends: 12916 [2018-11-07 09:04:07,402 INFO L226 Difference]: Without dead ends: 7619 [2018-11-07 09:04:07,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1112 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 09:04:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2018-11-07 09:04:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 7549. [2018-11-07 09:04:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7549 states. [2018-11-07 09:04:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7549 states to 7549 states and 9874 transitions. [2018-11-07 09:04:07,677 INFO L78 Accepts]: Start accepts. Automaton has 7549 states and 9874 transitions. Word has length 550 [2018-11-07 09:04:07,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:07,678 INFO L480 AbstractCegarLoop]: Abstraction has 7549 states and 9874 transitions. [2018-11-07 09:04:07,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:04:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7549 states and 9874 transitions. [2018-11-07 09:04:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-11-07 09:04:07,693 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:07,694 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:07,694 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:07,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:07,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1192862648, now seen corresponding path program 1 times [2018-11-07 09:04:07,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:07,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:07,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:07,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:07,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 484 proven. 427 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-07 09:04:09,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:09,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:09,162 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 554 with the following transitions: [2018-11-07 09:04:09,163 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:09,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:09,165 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:14,572 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:14,573 INFO L272 AbstractInterpreter]: Visited 132 different actions 524 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:14,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:14,580 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:14,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:14,580 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:14,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:14,591 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:14,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-11-07 09:04:14,903 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 577 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-11-07 09:04:15,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:15,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 09:04:15,332 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:15,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:04:15,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:04:15,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:04:15,333 INFO L87 Difference]: Start difference. First operand 7549 states and 9874 transitions. Second operand 17 states. [2018-11-07 09:04:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:23,510 INFO L93 Difference]: Finished difference Result 14745 states and 19569 transitions. [2018-11-07 09:04:23,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-07 09:04:23,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 553 [2018-11-07 09:04:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:23,524 INFO L225 Difference]: With dead ends: 14745 [2018-11-07 09:04:23,525 INFO L226 Difference]: Without dead ends: 3134 [2018-11-07 09:04:23,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1127 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 09:04:23,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2018-11-07 09:04:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2961. [2018-11-07 09:04:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2018-11-07 09:04:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 3139 transitions. [2018-11-07 09:04:23,640 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 3139 transitions. Word has length 553 [2018-11-07 09:04:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:23,641 INFO L480 AbstractCegarLoop]: Abstraction has 2961 states and 3139 transitions. [2018-11-07 09:04:23,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:04:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 3139 transitions. [2018-11-07 09:04:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-11-07 09:04:23,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:23,652 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:23,652 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:23,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:23,653 INFO L82 PathProgramCache]: Analyzing trace with hash -459704605, now seen corresponding path program 1 times [2018-11-07 09:04:23,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:23,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:23,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:23,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:23,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 538 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:04:24,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:24,538 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:24,539 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 683 with the following transitions: [2018-11-07 09:04:24,539 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:24,542 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:24,542 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:29,830 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:29,830 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:29,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:29,837 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:29,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:29,837 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:04:29,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:29,849 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:30,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 945 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-11-07 09:04:30,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 538 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:04:31,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:31,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:04:31,583 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:31,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:04:31,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:04:31,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:04:31,585 INFO L87 Difference]: Start difference. First operand 2961 states and 3139 transitions. Second operand 7 states. [2018-11-07 09:04:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:33,479 INFO L93 Difference]: Finished difference Result 6750 states and 7585 transitions. [2018-11-07 09:04:33,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:04:33,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 682 [2018-11-07 09:04:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:33,494 INFO L225 Difference]: With dead ends: 6750 [2018-11-07 09:04:33,495 INFO L226 Difference]: Without dead ends: 4163 [2018-11-07 09:04:33,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1364 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:04:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2018-11-07 09:04:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 3905. [2018-11-07 09:04:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3905 states. [2018-11-07 09:04:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 4195 transitions. [2018-11-07 09:04:33,588 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 4195 transitions. Word has length 682 [2018-11-07 09:04:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:33,589 INFO L480 AbstractCegarLoop]: Abstraction has 3905 states and 4195 transitions. [2018-11-07 09:04:33,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:04:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 4195 transitions. [2018-11-07 09:04:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-11-07 09:04:33,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:33,601 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:33,602 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:33,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1083649076, now seen corresponding path program 1 times [2018-11-07 09:04:33,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:33,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:33,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:33,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:33,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 537 proven. 602 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-11-07 09:04:35,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:35,366 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:35,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 728 with the following transitions: [2018-11-07 09:04:35,367 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:35,369 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:35,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:41,199 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:41,199 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:41,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:41,208 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:41,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:41,208 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:41,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:41,218 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:41,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 992 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-11-07 09:04:42,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 583 proven. 119 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-07 09:04:43,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:43,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-07 09:04:43,126 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:43,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:04:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:04:43,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:04:43,128 INFO L87 Difference]: Start difference. First operand 3905 states and 4195 transitions. Second operand 17 states. [2018-11-07 09:04:46,463 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 09:04:46,598 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 09:04:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:48,103 INFO L93 Difference]: Finished difference Result 8524 states and 9282 transitions. [2018-11-07 09:04:48,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 09:04:48,103 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 727 [2018-11-07 09:04:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:48,117 INFO L225 Difference]: With dead ends: 8524 [2018-11-07 09:04:48,117 INFO L226 Difference]: Without dead ends: 4993 [2018-11-07 09:04:48,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1469 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=462, Invalid=1518, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 09:04:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2018-11-07 09:04:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4795. [2018-11-07 09:04:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4795 states. [2018-11-07 09:04:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4795 states to 4795 states and 5126 transitions. [2018-11-07 09:04:48,210 INFO L78 Accepts]: Start accepts. Automaton has 4795 states and 5126 transitions. Word has length 727 [2018-11-07 09:04:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:48,210 INFO L480 AbstractCegarLoop]: Abstraction has 4795 states and 5126 transitions. [2018-11-07 09:04:48,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:04:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4795 states and 5126 transitions. [2018-11-07 09:04:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2018-11-07 09:04:48,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:48,225 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:48,225 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:48,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:48,226 INFO L82 PathProgramCache]: Analyzing trace with hash -658629070, now seen corresponding path program 1 times [2018-11-07 09:04:48,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:48,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:48,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:48,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:48,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 785 proven. 845 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-11-07 09:04:50,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:50,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:50,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 843 with the following transitions: [2018-11-07 09:04:50,906 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:50,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:50,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:56,464 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:56,465 INFO L272 AbstractInterpreter]: Visited 193 different actions 776 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:56,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:56,473 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:56,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:56,473 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:56,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:56,484 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:56,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1264 proven. 2 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-11-07 09:04:57,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 742 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-11-07 09:04:57,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:57,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-07 09:04:57,859 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:57,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 09:04:57,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 09:04:57,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-07 09:04:57,862 INFO L87 Difference]: Start difference. First operand 4795 states and 5126 transitions. Second operand 20 states. [2018-11-07 09:05:04,478 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-11-07 09:05:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:06,763 INFO L93 Difference]: Finished difference Result 9206 states and 9934 transitions. [2018-11-07 09:05:06,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-07 09:05:06,764 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 842 [2018-11-07 09:05:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:06,776 INFO L225 Difference]: With dead ends: 9206 [2018-11-07 09:05:06,777 INFO L226 Difference]: Without dead ends: 4311 [2018-11-07 09:05:06,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1797 GetRequests, 1721 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=884, Invalid=4372, Unknown=0, NotChecked=0, Total=5256 [2018-11-07 09:05:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2018-11-07 09:05:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3941. [2018-11-07 09:05:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3941 states. [2018-11-07 09:05:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 4153 transitions. [2018-11-07 09:05:06,856 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 4153 transitions. Word has length 842 [2018-11-07 09:05:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:06,857 INFO L480 AbstractCegarLoop]: Abstraction has 3941 states and 4153 transitions. [2018-11-07 09:05:06,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 09:05:06,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 4153 transitions. [2018-11-07 09:05:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-11-07 09:05:06,872 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:06,873 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:06,873 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:06,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1968535081, now seen corresponding path program 1 times [2018-11-07 09:05:06,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:06,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:06,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:06,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:06,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:07,772 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-07 09:05:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3073 backedges. 690 proven. 1393 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-11-07 09:05:09,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:09,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:09,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1018 with the following transitions: [2018-11-07 09:05:09,836 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:09,841 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:09,841 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:05:13,656 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:05:13,657 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:05:13,657 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:05:13,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:13,657 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:05:13,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:13,669 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:13,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:13,951 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:05:14,152 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:05:14,153 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:05:14,158 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:05:14,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:05:14 BoogieIcfgContainer [2018-11-07 09:05:14,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:05:14,159 INFO L168 Benchmark]: Toolchain (without parser) took 234827.56 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 1.7 GB in the end (delta: -247.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,161 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 09:05:14,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.24 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.79 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 79.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -166.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,163 INFO L168 Benchmark]: Boogie Preprocessor took 244.05 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 781.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -799.1 MB). Peak memory consumption was 8.2 kB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,164 INFO L168 Benchmark]: RCFGBuilder took 3599.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,164 INFO L168 Benchmark]: TraceAbstraction took 230039.15 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 530.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 09:05:14,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 844.24 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 94.79 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 79.2 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -166.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 244.05 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 781.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -799.1 MB). Peak memory consumption was 8.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 3599.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 133.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230039.15 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 530.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 112). Cancelled while BasicCegarLoop was analyzing trace of length 1018 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 14 OverallIterations, 9 TraceHistogramMax, 156.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1845 SDtfs, 23652 SDslu, 2684 SDs, 0 SdLazy, 28335 SolverSat, 4776 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 9420 GetRequests, 9120 SyntacticMatches, 10 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7549occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.1s AbstIntTime, 11 AbstIntIterations, 4 AbstIntStrong, 0.9972638972282182 AbsIntWeakeningRatio, 0.08969866853538892 AbsIntAvgWeakeningVarsNumRemoved, 16.152768044849335 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1426 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 9364 NumberOfCodeBlocks, 9364 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 13151 ConstructedInterpolants, 0 QuantifiedInterpolants, 34800720 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5597 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 21038/24210 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown