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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:19:58,349 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:19:58,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:19:58,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:19:58,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:19:58,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:19:58,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:19:58,374 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:19:58,376 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:19:58,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:19:58,378 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:19:58,378 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:19:58,379 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:19:58,380 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:19:58,381 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:19:58,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:19:58,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:19:58,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:19:58,395 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:19:58,396 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:19:58,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:19:58,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:19:58,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:19:58,409 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:19:58,410 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:19:58,410 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:19:58,411 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:19:58,415 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:19:58,416 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:19:58,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:19:58,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:19:58,420 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:19:58,420 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:19:58,420 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:19:58,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:19:58,424 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:19:58,424 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:19:58,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:19:58,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:19:58,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:19:58,449 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:19:58,450 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:19:58,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:19:58,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:19:58,450 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:19:58,450 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:19:58,451 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:19:58,451 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:19:58,451 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:19:58,452 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:19:58,452 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:19:58,452 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:19:58,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:19:58,452 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:19:58,453 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:19:58,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:19:58,453 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:19:58,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:19:58,453 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:19:58,454 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:19:58,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:19:58,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:19:58,454 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:19:58,454 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:19:58,455 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:19:58,456 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:19:58,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:19:58,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:19:58,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:19:58,517 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:19:58,517 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:19:58,518 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-27 03:19:58,575 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ee037cb6/8219fada9715465db9bee81824cbfbd5/FLAGc72d1c61c [2018-10-27 03:19:59,242 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:19:59,243 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-10-27 03:19:59,262 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ee037cb6/8219fada9715465db9bee81824cbfbd5/FLAGc72d1c61c [2018-10-27 03:19:59,277 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0ee037cb6/8219fada9715465db9bee81824cbfbd5 [2018-10-27 03:19:59,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:19:59,289 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:19:59,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:19:59,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:19:59,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:19:59,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:19:59" (1/1) ... [2018-10-27 03:19:59,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be7802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:59, skipping insertion in model container [2018-10-27 03:19:59,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:19:59" (1/1) ... [2018-10-27 03:19:59,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:19:59,407 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:20:00,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:20:00,155 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:20:00,390 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:20:00,410 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:20:00,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00 WrapperNode [2018-10-27 03:20:00,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:20:00,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:20:00,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:20:00,412 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:20:00,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:20:00,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:20:00,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:20:00,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:20:00,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (1/1) ... [2018-10-27 03:20:00,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:20:00,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:20:00,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:20:00,907 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:20:00,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (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 03:20:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:20:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:20:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:20:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:20:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:20:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:20:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:20:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:20:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:20:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:20:08,852 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:20:08,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:20:08 BoogieIcfgContainer [2018-10-27 03:20:08,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:20:08,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:20:08,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:20:08,858 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:20:08,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:19:59" (1/3) ... [2018-10-27 03:20:08,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca21ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:20:08, skipping insertion in model container [2018-10-27 03:20:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:20:00" (2/3) ... [2018-10-27 03:20:08,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca21ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:20:08, skipping insertion in model container [2018-10-27 03:20:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:20:08" (3/3) ... [2018-10-27 03:20:08,862 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label16_true-unreach-call.c [2018-10-27 03:20:08,872 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:20:08,881 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:20:08,898 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:20:08,939 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:20:08,939 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:20:08,939 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:20:08,939 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:20:08,939 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:20:08,940 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:20:08,940 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:20:08,940 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:20:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 03:20:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 03:20:08,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:08,982 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] [2018-10-27 03:20:08,984 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:08,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash 657368747, now seen corresponding path program 1 times [2018-10-27 03:20:08,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:09,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:09,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:09,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:09,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:09,498 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 03:20:09,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:09,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:20:09,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:09,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:20:09,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:20:09,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:20:09,526 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 03:20:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:14,000 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 03:20:14,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:20:14,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-27 03:20:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:14,027 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 03:20:14,028 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 03:20:14,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:20:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 03:20:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 03:20:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:20:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-27 03:20:14,170 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 49 [2018-10-27 03:20:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:14,170 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-27 03:20:14,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:20:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-27 03:20:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 03:20:14,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:14,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:14,179 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:14,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash 591590536, now seen corresponding path program 1 times [2018-10-27 03:20:14,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:14,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:14,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:14,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:20:14,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:14,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:20:14,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:14,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:20:14,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:20:14,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:20:14,525 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-27 03:20:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:29,330 INFO L93 Difference]: Finished difference Result 2960 states and 5492 transitions. [2018-10-27 03:20:29,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:20:29,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 03:20:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:29,365 INFO L225 Difference]: With dead ends: 2960 [2018-10-27 03:20:29,366 INFO L226 Difference]: Without dead ends: 2222 [2018-10-27 03:20:29,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:20:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-10-27 03:20:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2169. [2018-10-27 03:20:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2018-10-27 03:20:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3669 transitions. [2018-10-27 03:20:29,497 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3669 transitions. Word has length 125 [2018-10-27 03:20:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:29,497 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3669 transitions. [2018-10-27 03:20:29,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:20:29,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3669 transitions. [2018-10-27 03:20:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 03:20:29,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:29,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:29,504 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:29,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash 975106256, now seen corresponding path program 1 times [2018-10-27 03:20:29,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:29,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:29,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:20:29,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:29,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:20:29,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:29,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:20:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:20:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:20:29,770 INFO L87 Difference]: Start difference. First operand 2169 states and 3669 transitions. Second operand 6 states. [2018-10-27 03:20:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:35,585 INFO L93 Difference]: Finished difference Result 8029 states and 14212 transitions. [2018-10-27 03:20:35,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:20:35,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-27 03:20:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:35,637 INFO L225 Difference]: With dead ends: 8029 [2018-10-27 03:20:35,638 INFO L226 Difference]: Without dead ends: 5866 [2018-10-27 03:20:35,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:20:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2018-10-27 03:20:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5815. [2018-10-27 03:20:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2018-10-27 03:20:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8929 transitions. [2018-10-27 03:20:35,861 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8929 transitions. Word has length 129 [2018-10-27 03:20:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:35,862 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 8929 transitions. [2018-10-27 03:20:35,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:20:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8929 transitions. [2018-10-27 03:20:35,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 03:20:35,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:35,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:35,866 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:35,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash -834708748, now seen corresponding path program 1 times [2018-10-27 03:20:35,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:35,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:35,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:35,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:35,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:20:36,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:36,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:20:36,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:36,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:20:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:20:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:20:36,074 INFO L87 Difference]: Start difference. First operand 5815 states and 8929 transitions. Second operand 6 states. [2018-10-27 03:20:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:42,765 INFO L93 Difference]: Finished difference Result 14127 states and 22920 transitions. [2018-10-27 03:20:42,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:20:42,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-27 03:20:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:42,817 INFO L225 Difference]: With dead ends: 14127 [2018-10-27 03:20:42,817 INFO L226 Difference]: Without dead ends: 8318 [2018-10-27 03:20:42,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:20:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2018-10-27 03:20:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 8243. [2018-10-27 03:20:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8243 states. [2018-10-27 03:20:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 12158 transitions. [2018-10-27 03:20:43,089 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 12158 transitions. Word has length 131 [2018-10-27 03:20:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:43,089 INFO L481 AbstractCegarLoop]: Abstraction has 8243 states and 12158 transitions. [2018-10-27 03:20:43,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:20:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 12158 transitions. [2018-10-27 03:20:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 03:20:43,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:43,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:43,095 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:43,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:43,096 INFO L82 PathProgramCache]: Analyzing trace with hash 845250593, now seen corresponding path program 1 times [2018-10-27 03:20:43,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:43,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:43,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:43,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:43,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:43,386 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:20:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:20:43,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:43,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:20:43,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:43,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:20:43,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:20:43,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:20:43,743 INFO L87 Difference]: Start difference. First operand 8243 states and 12158 transitions. Second operand 6 states. [2018-10-27 03:20:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:47,238 INFO L93 Difference]: Finished difference Result 19923 states and 31423 transitions. [2018-10-27 03:20:47,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:20:47,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-27 03:20:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:47,311 INFO L225 Difference]: With dead ends: 19923 [2018-10-27 03:20:47,312 INFO L226 Difference]: Without dead ends: 11686 [2018-10-27 03:20:47,344 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 03:20:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11686 states. [2018-10-27 03:20:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11686 to 11640. [2018-10-27 03:20:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11640 states. [2018-10-27 03:20:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 16576 transitions. [2018-10-27 03:20:47,665 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 16576 transitions. Word has length 134 [2018-10-27 03:20:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:47,665 INFO L481 AbstractCegarLoop]: Abstraction has 11640 states and 16576 transitions. [2018-10-27 03:20:47,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:20:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 16576 transitions. [2018-10-27 03:20:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 03:20:47,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:47,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:47,669 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:47,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747012, now seen corresponding path program 1 times [2018-10-27 03:20:47,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:47,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:47,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:47,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:47,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:47,949 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:20:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:20:48,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:20:48,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:20:48,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:20:48,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:20:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:20:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:20:48,314 INFO L87 Difference]: Start difference. First operand 11640 states and 16576 transitions. Second operand 6 states. [2018-10-27 03:20:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:51,259 INFO L93 Difference]: Finished difference Result 25059 states and 36462 transitions. [2018-10-27 03:20:51,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:20:51,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 03:20:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:51,319 INFO L225 Difference]: With dead ends: 25059 [2018-10-27 03:20:51,319 INFO L226 Difference]: Without dead ends: 13425 [2018-10-27 03:20:51,356 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 03:20:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2018-10-27 03:20:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 13399. [2018-10-27 03:20:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13399 states. [2018-10-27 03:20:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13399 states to 13399 states and 17766 transitions. [2018-10-27 03:20:51,673 INFO L78 Accepts]: Start accepts. Automaton has 13399 states and 17766 transitions. Word has length 139 [2018-10-27 03:20:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:51,674 INFO L481 AbstractCegarLoop]: Abstraction has 13399 states and 17766 transitions. [2018-10-27 03:20:51,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:20:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13399 states and 17766 transitions. [2018-10-27 03:20:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 03:20:51,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:51,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:51,676 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:51,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:51,677 INFO L82 PathProgramCache]: Analyzing trace with hash 520725928, now seen corresponding path program 1 times [2018-10-27 03:20:51,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:51,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:51,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:51,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:51,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:51,925 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:20:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 03:20:52,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:20:52,172 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:20:52,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-10-27 03:20:52,177 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:20:52,265 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:20:52,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:20:55,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:21:04,071 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:21:04,072 INFO L272 AbstractInterpreter]: Visited 99 different actions 377 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:21:04,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:21:04,084 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:21:06,270 INFO L227 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 82.89% of their original sizes. [2018-10-27 03:21:06,270 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:21:54,769 INFO L415 sIntCurrentIteration]: We unified 140 AI predicates to 140 [2018-10-27 03:21:54,770 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:21:54,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:21:54,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-27 03:21:54,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:21:54,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 03:21:54,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 03:21:54,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-27 03:21:54,772 INFO L87 Difference]: Start difference. First operand 13399 states and 17766 transitions. Second operand 14 states. Received shutdown request... [2018-10-27 03:23:57,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 03:23:57,618 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:23:57,623 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:23:57,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:23:57 BoogieIcfgContainer [2018-10-27 03:23:57,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:23:57,624 INFO L168 Benchmark]: Toolchain (without parser) took 238336.09 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 03:23:57,625 INFO L168 Benchmark]: CDTParser took 0.18 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 03:23:57,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1120.73 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 03:23:57,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 316.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:57,628 INFO L168 Benchmark]: Boogie Preprocessor took 178.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:57,629 INFO L168 Benchmark]: RCFGBuilder took 7946.28 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: 276.2 MB). Peak memory consumption was 276.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:57,629 INFO L168 Benchmark]: TraceAbstraction took 228769.20 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -629.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:23:57,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1120.73 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 316.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -858.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7946.28 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: 276.2 MB). Peak memory consumption was 276.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228769.20 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -629.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (13399states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (1422 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 228.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 161.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 677 SDtfs, 10251 SDslu, 684 SDs, 0 SdLazy, 14533 SolverSat, 3870 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 203 GetRequests, 78 SyntacticMatches, 69 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 52.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13399occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934006211180127 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 30.22142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 429638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown