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_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:22:36,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:22:36,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:22:36,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:22:36,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:22:36,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:22:36,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:22:36,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:22:36,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:22:36,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:22:36,460 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:22:36,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:22:36,462 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:22:36,463 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:22:36,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:22:36,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:22:36,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:22:36,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:22:36,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:22:36,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:22:36,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:22:36,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:22:36,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:22:36,476 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:22:36,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:22:36,477 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:22:36,478 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:22:36,479 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:22:36,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:22:36,483 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:22:36,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:22:36,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 06:22:36,486 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 [2018-10-27 06:22:36,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:22:36,515 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:22:36,516 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:22:36,516 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:22:36,516 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:22:36,517 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:22:36,517 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:22:36,517 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:22:36,517 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:22:36,517 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:22:36,518 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:22:36,518 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:22:36,519 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:22:36,519 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:22:36,520 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:22:36,520 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:22:36,521 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:22:36,521 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:22:36,521 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:22:36,521 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:22:36,521 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:22:36,522 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:22:36,522 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:22:36,522 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:22:36,522 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:22:36,522 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:22:36,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:22:36,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:22:36,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:22:36,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:22:36,525 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:22:36,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:22:36,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:22:36,525 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:22:36,526 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:22:36,526 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:22:36,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:22:36,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:22:36,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:22:36,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:22:36,597 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:22:36,598 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51_true-unreach-call.c [2018-10-27 06:22:36,661 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5047c65ee/f3061b13582947bcbb40caa36c0839ca/FLAGc5c3db674 [2018-10-27 06:22:37,305 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:22:37,305 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51_true-unreach-call.c [2018-10-27 06:22:37,325 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5047c65ee/f3061b13582947bcbb40caa36c0839ca/FLAGc5c3db674 [2018-10-27 06:22:37,347 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5047c65ee/f3061b13582947bcbb40caa36c0839ca [2018-10-27 06:22:37,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:22:37,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:22:37,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:37,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:22:37,365 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:22:37,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:37" (1/1) ... [2018-10-27 06:22:37,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c07b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:37, skipping insertion in model container [2018-10-27 06:22:37,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:37" (1/1) ... [2018-10-27 06:22:37,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:22:37,468 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:22:38,272 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:38,280 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:22:38,711 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:38,735 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:22:38,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38 WrapperNode [2018-10-27 06:22:38,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:38,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:38,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:22:38,737 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:22:38,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:39,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:22:39,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:22:39,058 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:22:39,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:22:39,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:22:39,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:22:39,192 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:22:39,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (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 [2018-10-27 06:22:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:22:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:22:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:22:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:22:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:22:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:22:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:22:39,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:22:44,311 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:22:44,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:44 BoogieIcfgContainer [2018-10-27 06:22:44,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:22:44,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:22:44,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:22:44,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:22:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:22:37" (1/3) ... [2018-10-27 06:22:44,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5bfd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:44, skipping insertion in model container [2018-10-27 06:22:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (2/3) ... [2018-10-27 06:22:44,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f5bfd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:44, skipping insertion in model container [2018-10-27 06:22:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:44" (3/3) ... [2018-10-27 06:22:44,321 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label51_true-unreach-call.c [2018-10-27 06:22:44,332 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:22:44,341 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:22:44,359 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:22:44,399 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:22:44,399 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:22:44,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:22:44,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:22:44,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:22:44,400 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:22:44,400 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:22:44,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:22:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:22:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 06:22:44,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:44,450 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] [2018-10-27 06:22:44,453 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:44,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1377037548, now seen corresponding path program 1 times [2018-10-27 06:22:44,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:44,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:44,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:44,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:45,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:45,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:22:45,690 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:45,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 06:22:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:22:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:22:45,712 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 06:22:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:49,603 INFO L93 Difference]: Finished difference Result 1077 states and 1927 transitions. [2018-10-27 06:22:49,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:22:49,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-10-27 06:22:49,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:49,630 INFO L225 Difference]: With dead ends: 1077 [2018-10-27 06:22:49,630 INFO L226 Difference]: Without dead ends: 759 [2018-10-27 06:22:49,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:22:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-10-27 06:22:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 519. [2018-10-27 06:22:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-10-27 06:22:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 918 transitions. [2018-10-27 06:22:49,727 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 918 transitions. Word has length 195 [2018-10-27 06:22:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:49,729 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 918 transitions. [2018-10-27 06:22:49,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 06:22:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 918 transitions. [2018-10-27 06:22:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 06:22:49,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:49,746 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:49,746 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:49,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:49,747 INFO L82 PathProgramCache]: Analyzing trace with hash 233310665, now seen corresponding path program 1 times [2018-10-27 06:22:49,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:49,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:49,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:49,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:49,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:50,118 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:22:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:50,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:50,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:22:50,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:50,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:22:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:22:50,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:22:50,255 INFO L87 Difference]: Start difference. First operand 519 states and 918 transitions. Second operand 6 states. [2018-10-27 06:22:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:53,496 INFO L93 Difference]: Finished difference Result 1480 states and 2698 transitions. [2018-10-27 06:22:53,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:22:53,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-10-27 06:22:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:53,515 INFO L225 Difference]: With dead ends: 1480 [2018-10-27 06:22:53,515 INFO L226 Difference]: Without dead ends: 967 [2018-10-27 06:22:53,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:22:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-27 06:22:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 949. [2018-10-27 06:22:53,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-27 06:22:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-27 06:22:53,584 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 223 [2018-10-27 06:22:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:53,585 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-27 06:22:53,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:22:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-27 06:22:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-27 06:22:53,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:53,594 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:53,594 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:53,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:53,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1168787131, now seen corresponding path program 1 times [2018-10-27 06:22:53,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:53,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:53,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:53,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:53,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:53,943 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:22:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:54,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:54,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:22:54,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:54,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:22:54,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:22:54,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:22:54,194 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 6 states. [2018-10-27 06:22:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:57,447 INFO L93 Difference]: Finished difference Result 2923 states and 5085 transitions. [2018-10-27 06:22:57,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 06:22:57,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-10-27 06:22:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:57,468 INFO L225 Difference]: With dead ends: 2923 [2018-10-27 06:22:57,469 INFO L226 Difference]: Without dead ends: 1980 [2018-10-27 06:22:57,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:22:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-27 06:22:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1937. [2018-10-27 06:22:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-10-27 06:22:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3132 transitions. [2018-10-27 06:22:57,629 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3132 transitions. Word has length 230 [2018-10-27 06:22:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:57,629 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 3132 transitions. [2018-10-27 06:22:57,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:22:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3132 transitions. [2018-10-27 06:22:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 06:22:57,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:57,642 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:57,642 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:57,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash 735234804, now seen corresponding path program 1 times [2018-10-27 06:22:57,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:57,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:57,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:57,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:57,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:57,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:57,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:22:57,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:57,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:22:57,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:22:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:57,997 INFO L87 Difference]: Start difference. First operand 1937 states and 3132 transitions. Second operand 3 states. [2018-10-27 06:23:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:23:00,441 INFO L93 Difference]: Finished difference Result 5678 states and 9481 transitions. [2018-10-27 06:23:00,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:23:00,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2018-10-27 06:23:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:23:00,469 INFO L225 Difference]: With dead ends: 5678 [2018-10-27 06:23:00,469 INFO L226 Difference]: Without dead ends: 3747 [2018-10-27 06:23:00,480 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 [2018-10-27 06:23:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-10-27 06:23:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3742. [2018-10-27 06:23:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2018-10-27 06:23:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5849 transitions. [2018-10-27 06:23:00,606 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5849 transitions. Word has length 241 [2018-10-27 06:23:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:23:00,606 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 5849 transitions. [2018-10-27 06:23:00,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:23:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5849 transitions. [2018-10-27 06:23:00,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-27 06:23:00,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:23:00,626 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:23:00,626 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:23:00,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:00,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1160092379, now seen corresponding path program 1 times [2018-10-27 06:23:00,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:23:00,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:00,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:23:00,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:00,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:23:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:23:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:23:00,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:23:00,904 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:23:00,905 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-27 06:23:00,907 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:23:00,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:23:00,984 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:23:02,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:23:02,249 INFO L272 AbstractInterpreter]: Visited 196 different actions 196 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:23:02,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:02,279 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:03,583 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 73.54% of their original sizes. [2018-10-27 06:23:03,584 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:03,960 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-10-27 06:23:03,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:03,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:03,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-27 06:23:03,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:03,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 06:23:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 06:23:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-27 06:23:03,963 INFO L87 Difference]: Start difference. First operand 3742 states and 5849 transitions. Second operand 13 states. [2018-10-27 06:23:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:23:29,310 INFO L93 Difference]: Finished difference Result 7688 states and 11993 transitions. [2018-10-27 06:23:29,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:23:29,310 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 248 [2018-10-27 06:23:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:23:29,330 INFO L225 Difference]: With dead ends: 7688 [2018-10-27 06:23:29,330 INFO L226 Difference]: Without dead ends: 3952 [2018-10-27 06:23:29,344 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:23:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2018-10-27 06:23:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3950. [2018-10-27 06:23:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3950 states. [2018-10-27 06:23:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6066 transitions. [2018-10-27 06:23:29,454 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6066 transitions. Word has length 248 [2018-10-27 06:23:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:23:29,454 INFO L481 AbstractCegarLoop]: Abstraction has 3950 states and 6066 transitions. [2018-10-27 06:23:29,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 06:23:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6066 transitions. [2018-10-27 06:23:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 06:23:29,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:23:29,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:23:29,473 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:23:29,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:29,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1018040286, now seen corresponding path program 1 times [2018-10-27 06:23:29,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:23:29,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:29,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:23:29,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:29,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:23:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:23:29,767 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:23:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 06:23:30,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:23:30,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:23:30,117 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 06:23:30,118 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], [95], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:23:30,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:23:30,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:23:30,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:23:30,904 INFO L272 AbstractInterpreter]: Visited 200 different actions 394 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:23:30,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:30,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:32,157 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 73.89% of their original sizes. [2018-10-27 06:23:32,157 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:32,635 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-10-27 06:23:32,636 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:32,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:32,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-27 06:23:32,636 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:32,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 06:23:32,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 06:23:32,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-27 06:23:32,639 INFO L87 Difference]: Start difference. First operand 3950 states and 6066 transitions. Second operand 20 states. [2018-10-27 06:24:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:09,912 INFO L93 Difference]: Finished difference Result 7900 states and 12217 transitions. [2018-10-27 06:24:09,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:24:09,912 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 260 [2018-10-27 06:24:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:09,931 INFO L225 Difference]: With dead ends: 7900 [2018-10-27 06:24:09,932 INFO L226 Difference]: Without dead ends: 4164 [2018-10-27 06:24:09,944 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 268 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:24:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2018-10-27 06:24:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4161. [2018-10-27 06:24:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4161 states. [2018-10-27 06:24:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 6294 transitions. [2018-10-27 06:24:10,045 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 6294 transitions. Word has length 260 [2018-10-27 06:24:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:10,045 INFO L481 AbstractCegarLoop]: Abstraction has 4161 states and 6294 transitions. [2018-10-27 06:24:10,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 06:24:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 6294 transitions. [2018-10-27 06:24:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-27 06:24:10,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:10,064 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-27 06:24:10,065 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:10,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -287623958, now seen corresponding path program 1 times [2018-10-27 06:24:10,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:10,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:10,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:10,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:10,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:24:10,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:10,515 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:10,515 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-27 06:24:10,515 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:10,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:10,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:11,781 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:11,782 INFO L272 AbstractInterpreter]: Visited 201 different actions 593 times. Merged at 7 different actions 13 times. Never widened. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:24:11,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:11,790 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:11,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:11,790 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 [2018-10-27 06:24:11,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:11,801 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:12,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:24:12,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:24:13,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:24:13,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:24:13,170 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:24:13,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:24:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:24:13,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:24:13,172 INFO L87 Difference]: Start difference. First operand 4161 states and 6294 transitions. Second operand 9 states. [2018-10-27 06:24:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:17,620 INFO L93 Difference]: Finished difference Result 12077 states and 21270 transitions. [2018-10-27 06:24:17,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 06:24:17,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 270 [2018-10-27 06:24:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:17,682 INFO L225 Difference]: With dead ends: 12077 [2018-10-27 06:24:17,682 INFO L226 Difference]: Without dead ends: 8130 [2018-10-27 06:24:17,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:24:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8130 states. [2018-10-27 06:24:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8130 to 7406. [2018-10-27 06:24:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7406 states. [2018-10-27 06:24:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 10880 transitions. [2018-10-27 06:24:18,016 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 10880 transitions. Word has length 270 [2018-10-27 06:24:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:18,018 INFO L481 AbstractCegarLoop]: Abstraction has 7406 states and 10880 transitions. [2018-10-27 06:24:18,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:24:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 10880 transitions. [2018-10-27 06:24:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-27 06:24:18,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:18,050 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 06:24:18,050 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:18,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1836466746, now seen corresponding path program 1 times [2018-10-27 06:24:18,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:18,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:18,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:18,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:18,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:18,695 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:24:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 132 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:24:18,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:18,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:18,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-27 06:24:18,947 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [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], [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], [240], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:18,953 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:18,953 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:20,431 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:20,431 INFO L272 AbstractInterpreter]: Visited 201 different actions 600 times. Merged at 8 different actions 20 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:24:20,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:20,437 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:20,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:20,437 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 [2018-10-27 06:24:20,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:20,446 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:20,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 132 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 06:24:21,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 06:24:21,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:24:21,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-27 06:24:21,898 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:24:21,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 06:24:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 06:24:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:24:21,901 INFO L87 Difference]: Start difference. First operand 7406 states and 10880 transitions. Second operand 8 states. [2018-10-27 06:24:22,900 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 06:24:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:28,644 INFO L93 Difference]: Finished difference Result 24292 states and 38480 transitions. [2018-10-27 06:24:28,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-27 06:24:28,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 311 [2018-10-27 06:24:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:28,744 INFO L225 Difference]: With dead ends: 24292 [2018-10-27 06:24:28,744 INFO L226 Difference]: Without dead ends: 17311 [2018-10-27 06:24:28,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 642 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=288, Invalid=972, Unknown=0, NotChecked=0, Total=1260 [2018-10-27 06:24:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17311 states. [2018-10-27 06:24:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17311 to 15929. [2018-10-27 06:24:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15929 states. [2018-10-27 06:24:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15929 states to 15929 states and 22056 transitions. [2018-10-27 06:24:29,424 INFO L78 Accepts]: Start accepts. Automaton has 15929 states and 22056 transitions. Word has length 311 [2018-10-27 06:24:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:29,424 INFO L481 AbstractCegarLoop]: Abstraction has 15929 states and 22056 transitions. [2018-10-27 06:24:29,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 06:24:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15929 states and 22056 transitions. [2018-10-27 06:24:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-27 06:24:29,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:29,478 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:24:29,478 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:29,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1547804470, now seen corresponding path program 1 times [2018-10-27 06:24:29,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:29,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:29,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:29,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:29,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 149 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:24:30,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:30,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:30,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 331 with the following transitions: [2018-10-27 06:24:30,073 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [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], [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], [315], [320], [322], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:30,079 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:30,079 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:31,397 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:31,397 INFO L272 AbstractInterpreter]: Visited 201 different actions 595 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:24:31,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:31,403 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:31,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:31,403 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 [2018-10-27 06:24:31,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:31,413 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:31,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 06:24:31,972 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:32,255 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-10-27 06:24:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 149 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:24:32,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:24:32,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-10-27 06:24:32,734 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:24:32,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 06:24:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 06:24:32,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-27 06:24:32,735 INFO L87 Difference]: Start difference. First operand 15929 states and 22056 transitions. Second operand 10 states. [2018-10-27 06:24:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:41,314 INFO L93 Difference]: Finished difference Result 41417 states and 65262 transitions. [2018-10-27 06:24:41,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 06:24:41,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 330 [2018-10-27 06:24:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:41,472 INFO L225 Difference]: With dead ends: 41417 [2018-10-27 06:24:41,473 INFO L226 Difference]: Without dead ends: 27132 [2018-10-27 06:24:41,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 697 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2018-10-27 06:24:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27132 states. [2018-10-27 06:24:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27132 to 25494. [2018-10-27 06:24:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25494 states. [2018-10-27 06:24:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25494 states to 25494 states and 33922 transitions. [2018-10-27 06:24:42,501 INFO L78 Accepts]: Start accepts. Automaton has 25494 states and 33922 transitions. Word has length 330 [2018-10-27 06:24:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:42,502 INFO L481 AbstractCegarLoop]: Abstraction has 25494 states and 33922 transitions. [2018-10-27 06:24:42,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 06:24:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 25494 states and 33922 transitions. [2018-10-27 06:24:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-27 06:24:42,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:42,569 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:24:42,569 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:42,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:42,570 INFO L82 PathProgramCache]: Analyzing trace with hash 860820868, now seen corresponding path program 1 times [2018-10-27 06:24:42,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:42,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:42,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:42,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:42,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 148 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 06:24:43,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:43,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:43,153 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-10-27 06:24:43,153 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [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], [436], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:43,160 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:43,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:43,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:24:43,996 INFO L272 AbstractInterpreter]: Visited 200 different actions 394 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:24:44,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:44,033 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:24:45,149 INFO L227 lantSequenceWeakener]: Weakened 337 states. On average, predicates are now at 74.06% of their original sizes. [2018-10-27 06:24:45,150 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:24:45,529 INFO L415 sIntCurrentIteration]: We unified 341 AI predicates to 341 [2018-10-27 06:24:45,530 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:24:45,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:24:45,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [5] total 26 [2018-10-27 06:24:45,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:24:45,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 06:24:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 06:24:45,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-10-27 06:24:45,532 INFO L87 Difference]: Start difference. First operand 25494 states and 33922 transitions. Second operand 23 states. [2018-10-27 06:25:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:14,071 INFO L93 Difference]: Finished difference Result 52976 states and 71481 transitions. [2018-10-27 06:25:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 06:25:14,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 342 [2018-10-27 06:25:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:14,168 INFO L225 Difference]: With dead ends: 52976 [2018-10-27 06:25:14,168 INFO L226 Difference]: Without dead ends: 28117 [2018-10-27 06:25:14,214 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 349 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2018-10-27 06:25:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28117 states. [2018-10-27 06:25:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28117 to 28098. [2018-10-27 06:25:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28098 states. [2018-10-27 06:25:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28098 states to 28098 states and 36842 transitions. [2018-10-27 06:25:14,849 INFO L78 Accepts]: Start accepts. Automaton has 28098 states and 36842 transitions. Word has length 342 [2018-10-27 06:25:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:14,849 INFO L481 AbstractCegarLoop]: Abstraction has 28098 states and 36842 transitions. [2018-10-27 06:25:14,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 06:25:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 28098 states and 36842 transitions. [2018-10-27 06:25:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-27 06:25:14,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:14,892 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:25:14,893 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:14,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1294549902, now seen corresponding path program 1 times [2018-10-27 06:25:14,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:14,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:14,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:14,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:14,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:15,651 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 06:25:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:25:15,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:15,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:15,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-10-27 06:25:15,929 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [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], [178], [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], [428], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:15,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:15,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:17,157 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:17,157 INFO L272 AbstractInterpreter]: Visited 201 different actions 597 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:25:17,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:17,167 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:17,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:17,167 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 [2018-10-27 06:25:17,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:17,176 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:17,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:18,207 WARN L179 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-27 06:25:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-27 06:25:18,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:25:19,049 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2018-10-27 06:25:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 184 proven. 46 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:25:19,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:25:19,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 06:25:19,784 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:25:19,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 06:25:19,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 06:25:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-10-27 06:25:19,786 INFO L87 Difference]: Start difference. First operand 28098 states and 36842 transitions. Second operand 10 states. [2018-10-27 06:25:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:36,760 INFO L93 Difference]: Finished difference Result 97411 states and 159296 transitions. [2018-10-27 06:25:36,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-27 06:25:36,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 363 [2018-10-27 06:25:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:37,308 INFO L225 Difference]: With dead ends: 97411 [2018-10-27 06:25:37,308 INFO L226 Difference]: Without dead ends: 69950 [2018-10-27 06:25:37,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1050, Invalid=5922, Unknown=0, NotChecked=0, Total=6972 [2018-10-27 06:25:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69950 states. [2018-10-27 06:25:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69950 to 64462. [2018-10-27 06:25:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64462 states. [2018-10-27 06:25:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64462 states to 64462 states and 80807 transitions. [2018-10-27 06:25:39,819 INFO L78 Accepts]: Start accepts. Automaton has 64462 states and 80807 transitions. Word has length 363 [2018-10-27 06:25:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:39,820 INFO L481 AbstractCegarLoop]: Abstraction has 64462 states and 80807 transitions. [2018-10-27 06:25:39,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 06:25:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 64462 states and 80807 transitions. [2018-10-27 06:25:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-10-27 06:25:39,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:39,889 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:25:39,889 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:39,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:39,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1210336133, now seen corresponding path program 1 times [2018-10-27 06:25:39,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:39,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:39,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:39,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:39,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:40,486 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:25:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 185 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:25:41,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:41,068 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:41,069 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 370 with the following transitions: [2018-10-27 06:25:41,069 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [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], [600], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:41,074 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:41,075 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:42,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:42,121 INFO L272 AbstractInterpreter]: Visited 201 different actions 597 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:25:42,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:42,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:42,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:42,126 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 [2018-10-27 06:25:42,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:42,134 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:42,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 06:25:42,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:25:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 06:25:42,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:25:42,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:25:42,933 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:25:42,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:25:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:25:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:25:42,935 INFO L87 Difference]: Start difference. First operand 64462 states and 80807 transitions. Second operand 9 states. [2018-10-27 06:25:48,814 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 06:25:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:53,560 INFO L93 Difference]: Finished difference Result 244096 states and 315959 transitions. [2018-10-27 06:25:53,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-27 06:25:53,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 369 [2018-10-27 06:25:53,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:54,193 INFO L225 Difference]: With dead ends: 244096 [2018-10-27 06:25:54,194 INFO L226 Difference]: Without dead ends: 172115 [2018-10-27 06:25:54,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=361, Invalid=1361, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:25:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172115 states. [2018-10-27 06:25:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172115 to 168262. [2018-10-27 06:25:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168262 states. [2018-10-27 06:25:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168262 states to 168262 states and 201359 transitions. [2018-10-27 06:25:58,356 INFO L78 Accepts]: Start accepts. Automaton has 168262 states and 201359 transitions. Word has length 369 [2018-10-27 06:25:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:58,356 INFO L481 AbstractCegarLoop]: Abstraction has 168262 states and 201359 transitions. [2018-10-27 06:25:58,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:25:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 168262 states and 201359 transitions. [2018-10-27 06:25:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-27 06:25:58,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:58,485 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:25:58,485 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:58,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash -111053445, now seen corresponding path program 1 times [2018-10-27 06:25:58,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:58,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:58,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:58,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:58,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 253 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 06:25:59,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:59,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:59,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-10-27 06:25:59,114 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [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], [661], [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], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:59,118 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:59,118 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:59,915 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:59,915 INFO L272 AbstractInterpreter]: Visited 204 different actions 606 times. Merged at 9 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:25:59,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:59,921 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:59,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:59,921 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:25:59,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:59,929 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:26:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:00,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 06:26:01,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-27 06:26:01,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:26:01,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:26:01,344 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:26:01,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:26:01,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:26:01,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:26:01,346 INFO L87 Difference]: Start difference. First operand 168262 states and 201359 transitions. Second operand 9 states. Received shutdown request... [2018-10-27 06:26:14,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-27 06:26:14,838 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:26:14,844 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:26:14,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:26:14 BoogieIcfgContainer [2018-10-27 06:26:14,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:26:14,848 INFO L168 Benchmark]: Toolchain (without parser) took 217489.47 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,849 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:26:14,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1375.55 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,852 INFO L168 Benchmark]: Boogie Preprocessor took 133.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,853 INFO L168 Benchmark]: RCFGBuilder took 5120.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.8 MB). Peak memory consumption was 256.8 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,854 INFO L168 Benchmark]: TraceAbstraction took 210533.58 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 839.7 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:14,861 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1375.55 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5120.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.8 MB). Peak memory consumption was 256.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210533.58 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 839.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1599]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1599). Cancelled while BasicCegarLoop was constructing difference of abstraction (168262states) and FLOYD_HOARE automaton (currently 35 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (356194 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 167.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3068 SDtfs, 23948 SDslu, 6604 SDs, 0 SdLazy, 45703 SolverSat, 8156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5418 GetRequests, 5057 SyntacticMatches, 11 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5069 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168262occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.2s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9991295657270565 AbsIntWeakeningRatio, 0.2550177095631641 AbsIntAvgWeakeningVarsNumRemoved, 58.17473435655254 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 13415 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 5821 NumberOfCodeBlocks, 5821 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7837 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560542 SizeOfPredicates, 20 NumberOfNonLiveVariables, 8023 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 3961/4256 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown