java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:17:07,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:17:07,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:17:07,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:17:07,412 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:17:07,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:17:07,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:17:07,420 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:17:07,422 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:17:07,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:17:07,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:17:07,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:17:07,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:17:07,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:17:07,432 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:17:07,433 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:17:07,434 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:17:07,438 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:17:07,447 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:17:07,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:17:07,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:17:07,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:17:07,459 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:17:07,459 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:17:07,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:17:07,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:17:07,463 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:17:07,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:17:07,466 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:17:07,467 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:17:07,468 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:17:07,470 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:17:07,474 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:17:07,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:17:07,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:17:07,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:17:07,504 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:17:07,504 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:17:07,504 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:17:07,504 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:17:07,504 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:17:07,505 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:17:07,505 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:17:07,505 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:17:07,505 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:17:07,505 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:17:07,506 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:17:07,507 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:17:07,507 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:17:07,507 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:17:07,507 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:17:07,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:17:07,508 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:17:07,508 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:17:07,508 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:17:07,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:17:07,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:17:07,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:17:07,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:17:07,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:07,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:17:07,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:17:07,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:17:07,513 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:17:07,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:17:07,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:17:07,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:17:07,513 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:17:07,514 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:17:07,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:17:07,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:17:07,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:17:07,595 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:17:07,596 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:17:07,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label38_true-unreach-call.c [2018-10-25 00:17:07,663 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/efb6e16d7/66add16bb89546ff9630785d3a903d14/FLAG4a592f782 [2018-10-25 00:17:08,312 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:17:08,313 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label38_true-unreach-call.c [2018-10-25 00:17:08,329 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/efb6e16d7/66add16bb89546ff9630785d3a903d14/FLAG4a592f782 [2018-10-25 00:17:08,344 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/efb6e16d7/66add16bb89546ff9630785d3a903d14 [2018-10-25 00:17:08,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:17:08,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:17:08,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:08,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:17:08,363 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:17:08,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:08" (1/1) ... [2018-10-25 00:17:08,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43178677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:08, skipping insertion in model container [2018-10-25 00:17:08,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:08" (1/1) ... [2018-10-25 00:17:08,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:17:08,477 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:17:09,235 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:09,242 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:17:09,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:09,519 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:17:09,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09 WrapperNode [2018-10-25 00:17:09,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:09,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:09,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:17:09,521 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:17:09,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:09,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:17:09,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:17:09,814 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:17:09,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... [2018-10-25 00:17:09,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:17:09,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:17:09,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:17:09,942 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:17:09,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:17:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:17:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:17:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:17:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:17:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:17:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:17:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:17:15,106 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:17:15,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:15 BoogieIcfgContainer [2018-10-25 00:17:15,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:17:15,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:17:15,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:17:15,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:17:15,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:17:08" (1/3) ... [2018-10-25 00:17:15,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3d1474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:15, skipping insertion in model container [2018-10-25 00:17:15,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:09" (2/3) ... [2018-10-25 00:17:15,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3d1474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:15, skipping insertion in model container [2018-10-25 00:17:15,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:15" (3/3) ... [2018-10-25 00:17:15,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label38_true-unreach-call.c [2018-10-25 00:17:15,129 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:17:15,140 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:17:15,160 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:17:15,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:17:15,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:17:15,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:17:15,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:17:15,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:17:15,204 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:17:15,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:17:15,204 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:17:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:17:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 00:17:15,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:15,258 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:15,261 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:15,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:15,269 INFO L82 PathProgramCache]: Analyzing trace with hash -274519863, now seen corresponding path program 1 times [2018-10-25 00:17:15,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:15,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:15,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:15,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:15,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:16,264 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:17:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:16,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:16,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:16,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:16,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:16,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:16,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:16,504 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:17:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:18,472 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-25 00:17:18,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:18,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-10-25 00:17:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:18,519 INFO L225 Difference]: With dead ends: 848 [2018-10-25 00:17:18,520 INFO L226 Difference]: Without dead ends: 534 [2018-10-25 00:17:18,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-25 00:17:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-25 00:17:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-25 00:17:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-25 00:17:18,625 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 208 [2018-10-25 00:17:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:18,627 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-25 00:17:18,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-25 00:17:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-25 00:17:18,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:18,636 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:18,637 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:18,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 583518797, now seen corresponding path program 1 times [2018-10-25 00:17:18,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:18,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:18,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:18,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:18,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:19,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:19,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:19,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:19,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:19,177 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-25 00:17:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:21,040 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-10-25 00:17:21,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:21,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-10-25 00:17:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:21,051 INFO L225 Difference]: With dead ends: 1494 [2018-10-25 00:17:21,051 INFO L226 Difference]: Without dead ends: 968 [2018-10-25 00:17:21,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-25 00:17:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-10-25 00:17:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-25 00:17:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-10-25 00:17:21,096 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 221 [2018-10-25 00:17:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:21,097 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-10-25 00:17:21,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-10-25 00:17:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-25 00:17:21,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:21,103 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:21,104 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:21,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:21,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1022344301, now seen corresponding path program 1 times [2018-10-25 00:17:21,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:21,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:21,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:21,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:21,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:21,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:21,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:21,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-25 00:17:21,606 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:21,671 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:21,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:22,840 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:22,842 INFO L272 AbstractInterpreter]: Visited 209 different actions 209 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:17:22,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:22,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:24,189 INFO L232 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 75% of their original sizes. [2018-10-25 00:17:24,189 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:24,902 INFO L413 sIntCurrentIteration]: We have 231 unified AI predicates [2018-10-25 00:17:24,902 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:17:24,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:17:24,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:17:24,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:24,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:17:24,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:17:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:17:24,905 INFO L87 Difference]: Start difference. First operand 952 states and 1529 transitions. Second operand 13 states. [2018-10-25 00:17:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:50,578 INFO L93 Difference]: Finished difference Result 2108 states and 3387 transitions. [2018-10-25 00:17:50,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:17:50,579 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 232 [2018-10-25 00:17:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:50,585 INFO L225 Difference]: With dead ends: 2108 [2018-10-25 00:17:50,585 INFO L226 Difference]: Without dead ends: 1162 [2018-10-25 00:17:50,589 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:17:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-10-25 00:17:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-10-25 00:17:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-10-25 00:17:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1747 transitions. [2018-10-25 00:17:50,623 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1747 transitions. Word has length 232 [2018-10-25 00:17:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:50,623 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1747 transitions. [2018-10-25 00:17:50,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:17:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1747 transitions. [2018-10-25 00:17:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-25 00:17:50,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:50,630 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:50,630 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:50,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1482214398, now seen corresponding path program 1 times [2018-10-25 00:17:50,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:50,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:50,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:50,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:50,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:50,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:50,909 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:50,909 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-25 00:17:50,910 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:50,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:50,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:53,696 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:53,696 INFO L272 AbstractInterpreter]: Visited 212 different actions 423 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:17:53,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:53,713 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:57,138 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:17:57,139 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:18:03,830 INFO L413 sIntCurrentIteration]: We have 240 unified AI predicates [2018-10-25 00:18:03,830 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:18:03,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:18:03,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-25 00:18:03,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:03,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 00:18:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 00:18:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:18:03,832 INFO L87 Difference]: Start difference. First operand 1160 states and 1747 transitions. Second operand 11 states. [2018-10-25 00:18:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:54,887 INFO L93 Difference]: Finished difference Result 3733 states and 5942 transitions. [2018-10-25 00:18:54,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-25 00:18:54,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 241 [2018-10-25 00:18:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:54,902 INFO L225 Difference]: With dead ends: 3733 [2018-10-25 00:18:54,903 INFO L226 Difference]: Without dead ends: 2787 [2018-10-25 00:18:54,909 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 100 SyntacticMatches, 131 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:18:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2018-10-25 00:18:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2781. [2018-10-25 00:18:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2018-10-25 00:18:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4044 transitions. [2018-10-25 00:18:54,984 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4044 transitions. Word has length 241 [2018-10-25 00:18:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:54,984 INFO L481 AbstractCegarLoop]: Abstraction has 2781 states and 4044 transitions. [2018-10-25 00:18:54,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 00:18:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4044 transitions. [2018-10-25 00:18:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-25 00:18:54,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:54,997 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:18:54,997 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:54,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1272402825, now seen corresponding path program 1 times [2018-10-25 00:18:54,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:54,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:54,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:54,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:54,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:18:55,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:55,352 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:18:55,352 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-10-25 00:18:55,353 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:18:55,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:18:55,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:18:56,235 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:18:56,236 INFO L272 AbstractInterpreter]: Visited 212 different actions 418 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:18:56,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:56,245 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:18:57,552 INFO L232 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 74.48% of their original sizes. [2018-10-25 00:18:57,552 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:18:57,874 INFO L413 sIntCurrentIteration]: We have 254 unified AI predicates [2018-10-25 00:18:57,874 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:18:57,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:18:57,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:18:57,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:57,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:18:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:18:57,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:18:57,876 INFO L87 Difference]: Start difference. First operand 2781 states and 4044 transitions. Second operand 20 states. [2018-10-25 00:20:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:02,965 INFO L93 Difference]: Finished difference Result 4779 states and 7172 transitions. [2018-10-25 00:20:02,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:20:02,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 255 [2018-10-25 00:20:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:02,979 INFO L225 Difference]: With dead ends: 4779 [2018-10-25 00:20:02,980 INFO L226 Difference]: Without dead ends: 2993 [2018-10-25 00:20:02,986 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:20:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2018-10-25 00:20:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2992. [2018-10-25 00:20:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2018-10-25 00:20:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4271 transitions. [2018-10-25 00:20:03,061 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4271 transitions. Word has length 255 [2018-10-25 00:20:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:03,061 INFO L481 AbstractCegarLoop]: Abstraction has 2992 states and 4271 transitions. [2018-10-25 00:20:03,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:20:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4271 transitions. [2018-10-25 00:20:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-25 00:20:03,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:03,075 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:03,075 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:03,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:03,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1790727279, now seen corresponding path program 1 times [2018-10-25 00:20:03,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:03,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:03,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:03,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:03,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:03,327 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:20:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 77 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-25 00:20:03,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:03,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:03,676 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-10-25 00:20:03,677 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:03,685 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:03,685 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:09,554 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:09,555 INFO L272 AbstractInterpreter]: Visited 215 different actions 640 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:20:09,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:09,567 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:09,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:09,567 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:09,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:09,578 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:09,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-10-25 00:20:10,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:10,656 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 00:20:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-25 00:20:11,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:20:11,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:20:11,588 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:20:11,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:20:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:20:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:20:11,589 INFO L87 Difference]: Start difference. First operand 2992 states and 4271 transitions. Second operand 9 states. [2018-10-25 00:20:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:16,631 INFO L93 Difference]: Finished difference Result 10567 states and 17740 transitions. [2018-10-25 00:20:16,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-25 00:20:16,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 268 [2018-10-25 00:20:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:16,692 INFO L225 Difference]: With dead ends: 10567 [2018-10-25 00:20:16,693 INFO L226 Difference]: Without dead ends: 8207 [2018-10-25 00:20:16,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 545 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:20:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2018-10-25 00:20:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 7988. [2018-10-25 00:20:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7988 states. [2018-10-25 00:20:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 11595 transitions. [2018-10-25 00:20:16,999 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 11595 transitions. Word has length 268 [2018-10-25 00:20:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 7988 states and 11595 transitions. [2018-10-25 00:20:16,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:20:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 11595 transitions. [2018-10-25 00:20:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-25 00:20:17,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:17,031 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:17,031 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:17,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:17,032 INFO L82 PathProgramCache]: Analyzing trace with hash 464520961, now seen corresponding path program 1 times [2018-10-25 00:20:17,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:17,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:17,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:17,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:17,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:20:17,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:17,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:17,638 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-25 00:20:17,639 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:17,646 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:17,646 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:23,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:23,602 INFO L272 AbstractInterpreter]: Visited 214 different actions 640 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:20:23,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:23,608 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:23,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:23,608 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:23,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:23,615 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:23,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:20:23,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:20:24,370 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:24,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:20:24,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:24,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:20:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:20:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:20:24,373 INFO L87 Difference]: Start difference. First operand 7988 states and 11595 transitions. Second operand 3 states. [2018-10-25 00:20:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:25,896 INFO L93 Difference]: Finished difference Result 15056 states and 22256 transitions. [2018-10-25 00:20:25,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:20:25,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2018-10-25 00:20:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:25,945 INFO L225 Difference]: With dead ends: 15056 [2018-10-25 00:20:25,945 INFO L226 Difference]: Without dead ends: 7992 [2018-10-25 00:20:25,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:20:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2018-10-25 00:20:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7988. [2018-10-25 00:20:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7988 states. [2018-10-25 00:20:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 10853 transitions. [2018-10-25 00:20:26,153 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 10853 transitions. Word has length 281 [2018-10-25 00:20:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:26,154 INFO L481 AbstractCegarLoop]: Abstraction has 7988 states and 10853 transitions. [2018-10-25 00:20:26,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:20:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 10853 transitions. [2018-10-25 00:20:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-25 00:20:26,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:26,184 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:26,184 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:26,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1534123996, now seen corresponding path program 1 times [2018-10-25 00:20:26,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:26,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:26,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:26,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:26,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:20:26,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:26,718 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:26,719 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-25 00:20:26,719 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:26,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:26,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:32,420 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:32,421 INFO L272 AbstractInterpreter]: Visited 214 different actions 640 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:20:32,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:32,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:32,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:32,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:32,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:32,444 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:32,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-25 00:20:32,857 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-25 00:20:33,382 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:33,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:20:33,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:33,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:20:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:20:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:20:33,384 INFO L87 Difference]: Start difference. First operand 7988 states and 10853 transitions. Second operand 3 states. [2018-10-25 00:20:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:34,647 INFO L93 Difference]: Finished difference Result 18564 states and 25690 transitions. [2018-10-25 00:20:34,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:20:34,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2018-10-25 00:20:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:34,692 INFO L225 Difference]: With dead ends: 18564 [2018-10-25 00:20:34,693 INFO L226 Difference]: Without dead ends: 11362 [2018-10-25 00:20:34,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 598 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:20:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2018-10-25 00:20:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11358. [2018-10-25 00:20:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11358 states. [2018-10-25 00:20:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11358 states to 11358 states and 15141 transitions. [2018-10-25 00:20:34,960 INFO L78 Accepts]: Start accepts. Automaton has 11358 states and 15141 transitions. Word has length 300 [2018-10-25 00:20:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:34,961 INFO L481 AbstractCegarLoop]: Abstraction has 11358 states and 15141 transitions. [2018-10-25 00:20:34,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:20:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 11358 states and 15141 transitions. [2018-10-25 00:20:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-25 00:20:35,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:35,002 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:35,003 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:35,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:35,003 INFO L82 PathProgramCache]: Analyzing trace with hash 28905719, now seen corresponding path program 1 times [2018-10-25 00:20:35,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:35,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:35,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:35,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:35,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 87 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:20:36,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:36,401 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:36,401 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-25 00:20:36,401 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:36,407 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:36,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:47,060 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:47,061 INFO L272 AbstractInterpreter]: Visited 214 different actions 858 times. Merged at 8 different actions 37 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:20:47,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:47,072 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:47,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:47,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:47,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:47,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:47,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-25 00:20:47,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-25 00:20:47,927 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:20:47,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-10-25 00:20:47,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:20:47,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:20:47,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:20:47,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:20:47,929 INFO L87 Difference]: Start difference. First operand 11358 states and 15141 transitions. Second operand 3 states. [2018-10-25 00:20:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:49,661 INFO L93 Difference]: Finished difference Result 31604 states and 43658 transitions. [2018-10-25 00:20:49,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:20:49,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2018-10-25 00:20:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:49,734 INFO L225 Difference]: With dead ends: 31604 [2018-10-25 00:20:49,734 INFO L226 Difference]: Without dead ends: 21049 [2018-10-25 00:20:49,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:20:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21049 states. [2018-10-25 00:20:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21049 to 21036. [2018-10-25 00:20:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21036 states. [2018-10-25 00:20:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21036 states to 21036 states and 28002 transitions. [2018-10-25 00:20:50,221 INFO L78 Accepts]: Start accepts. Automaton has 21036 states and 28002 transitions. Word has length 302 [2018-10-25 00:20:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:50,222 INFO L481 AbstractCegarLoop]: Abstraction has 21036 states and 28002 transitions. [2018-10-25 00:20:50,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:20:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 21036 states and 28002 transitions. [2018-10-25 00:20:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-25 00:20:50,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:50,299 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:20:50,299 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:50,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:50,299 INFO L82 PathProgramCache]: Analyzing trace with hash -977547278, now seen corresponding path program 1 times [2018-10-25 00:20:50,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:50,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:50,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:50,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:50,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 217 proven. 62 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-10-25 00:20:50,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:50,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:50,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 380 with the following transitions: [2018-10-25 00:20:50,909 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [127], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:50,915 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:50,915 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:02,192 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:02,192 INFO L272 AbstractInterpreter]: Visited 217 different actions 883 times. Merged at 10 different actions 50 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:21:02,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:02,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:02,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:02,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:02,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:02,209 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:02,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-25 00:21:02,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-10-25 00:21:03,145 WARN L187 SmtUtils]: Removed 3 from assertion stack [2018-10-25 00:21:03,145 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 00:21:03,347 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:03,347 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:21:03,354 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:21:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:21:03 BoogieIcfgContainer [2018-10-25 00:21:03,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:21:03,355 INFO L168 Benchmark]: Toolchain (without parser) took 234998.92 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -716.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,356 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:21:03,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1161.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 292.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,358 INFO L168 Benchmark]: Boogie Preprocessor took 127.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,359 INFO L168 Benchmark]: RCFGBuilder took 5165.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 250.3 MB). Peak memory consumption was 250.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,360 INFO L168 Benchmark]: TraceAbstraction took 228245.64 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -226.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:03,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1161.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 292.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5165.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 250.3 MB). Peak memory consumption was 250.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228245.64 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -226.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1638]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1638). Cancelled while BasicCegarLoop was analyzing trace of length 380 with TraceHistMax 7,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was doing sequential composition of 5 TransFormulas,while SimplifyDDAWithTimeout was simplifying term of DAG size 8. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 228.1s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 155.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3160 SDtfs, 10118 SDslu, 2068 SDs, 0 SdLazy, 14147 SolverSat, 2413 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3117 GetRequests, 2870 SyntacticMatches, 144 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21036occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 44.5s AbstIntTime, 8 AbstIntIterations, 3 AbstIntStrong, 0.9991408800269148 AbsIntWeakeningRatio, 0.2524137931034483 AbsIntAvgWeakeningVarsNumRemoved, 20.849655172413794 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 267 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 3459 NumberOfCodeBlocks, 3459 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4593 ConstructedInterpolants, 0 QuantifiedInterpolants, 2596155 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5192 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 1553/1654 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown