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/Problem19_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:30:10,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:30:10,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:30:10,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:30:10,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:30:10,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:30:10,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:30:10,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:30:10,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:30:10,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:30:10,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:30:10,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:30:10,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:30:10,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:30:10,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:30:10,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:30:10,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:30:10,365 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:30:10,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:30:10,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:30:10,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:30:10,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:30:10,382 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:30:10,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:30:10,384 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:30:10,385 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:30:10,386 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:30:10,387 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:30:10,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:30:10,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:30:10,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:30:10,392 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 22:30:10,393 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:30:10,394 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:30:10,395 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:30:10,396 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:30:10,397 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 [2018-10-24 22:30:10,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:30:10,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:30:10,425 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:30:10,425 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:30:10,425 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:30:10,426 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:30:10,426 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:30:10,426 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:30:10,426 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:30:10,426 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:30:10,429 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:30:10,430 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:30:10,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:30:10,431 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:30:10,431 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:30:10,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:30:10,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:30:10,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:30:10,433 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:30:10,433 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:30:10,433 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:30:10,434 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:30:10,434 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:30:10,434 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:30:10,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:30:10,435 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:30:10,435 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:30:10,435 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:30:10,435 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:30:10,435 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:30:10,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:30:10,436 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:30:10,436 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:30:10,436 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:30:10,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:30:10,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:30:10,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:30:10,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:30:10,524 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:30:10,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label35_true-unreach-call.c [2018-10-24 22:30:10,593 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/339a7f89b/709e5c60cab34344a52aff9e67c6d90b/FLAG31372522d [2018-10-24 22:30:11,525 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:30:11,527 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label35_true-unreach-call.c [2018-10-24 22:30:11,585 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/339a7f89b/709e5c60cab34344a52aff9e67c6d90b/FLAG31372522d [2018-10-24 22:30:11,603 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/339a7f89b/709e5c60cab34344a52aff9e67c6d90b [2018-10-24 22:30:11,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:30:11,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:30:11,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:30:11,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:30:11,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:30:11,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:30:11" (1/1) ... [2018-10-24 22:30:11,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:11, skipping insertion in model container [2018-10-24 22:30:11,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:30:11" (1/1) ... [2018-10-24 22:30:11,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:30:11,897 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:30:13,952 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:30:13,957 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:30:15,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:30:15,322 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:30:15,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15 WrapperNode [2018-10-24 22:30:15,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:30:15,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:30:15,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:30:15,324 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:30:15,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:15,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:30:16,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:30:16,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:30:16,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:30:16,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (1/1) ... [2018-10-24 22:30:16,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:30:16,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:30:16,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:30:16,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:30:16,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (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 [2018-10-24 22:30:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:30:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:30:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:30:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:30:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:30:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:30:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:30:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:30:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:30:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:30:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:30:16,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:30:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:30:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:30:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:30:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:30:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:30:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:30:34,037 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:30:34,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:30:34 BoogieIcfgContainer [2018-10-24 22:30:34,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:30:34,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:30:34,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:30:34,043 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:30:34,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:30:11" (1/3) ... [2018-10-24 22:30:34,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:30:34, skipping insertion in model container [2018-10-24 22:30:34,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:30:15" (2/3) ... [2018-10-24 22:30:34,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:30:34, skipping insertion in model container [2018-10-24 22:30:34,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:30:34" (3/3) ... [2018-10-24 22:30:34,047 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label35_true-unreach-call.c [2018-10-24 22:30:34,057 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:30:34,068 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:30:34,087 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:30:34,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:30:34,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:30:34,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:30:34,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:30:34,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:30:34,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:30:34,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:30:34,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:30:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:30:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 22:30:34,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:34,210 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] [2018-10-24 22:30:34,212 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:34,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:34,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1096536636, now seen corresponding path program 1 times [2018-10-24 22:30:34,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:34,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:34,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:34,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:34,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:30:34,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:30:34,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:30:34,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:34,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:30:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:30:34,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:30:34,722 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 22:31:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:02,327 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-10-24 22:31:02,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:31:02,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-24 22:31:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:02,397 INFO L225 Difference]: With dead ends: 6513 [2018-10-24 22:31:02,398 INFO L226 Difference]: Without dead ends: 4729 [2018-10-24 22:31:02,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:31:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-24 22:31:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-10-24 22:31:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-10-24 22:31:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-10-24 22:31:02,798 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 46 [2018-10-24 22:31:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:02,798 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-10-24 22:31:02,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:31:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-10-24 22:31:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 22:31:02,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:02,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:31:02,807 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:02,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:02,807 INFO L82 PathProgramCache]: Analyzing trace with hash 935999737, now seen corresponding path program 1 times [2018-10-24 22:31:02,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:02,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:02,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:02,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:02,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:03,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:03,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:31:03,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:03,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:31:03,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:31:03,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:31:03,118 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-10-24 22:31:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:33,455 INFO L93 Difference]: Finished difference Result 17901 states and 30189 transitions. [2018-10-24 22:31:33,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:31:33,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 22:31:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:33,521 INFO L225 Difference]: With dead ends: 17901 [2018-10-24 22:31:33,522 INFO L226 Difference]: Without dead ends: 13214 [2018-10-24 22:31:33,541 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 [2018-10-24 22:31:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2018-10-24 22:31:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 13145. [2018-10-24 22:31:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13145 states. [2018-10-24 22:31:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 19385 transitions. [2018-10-24 22:31:34,064 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 19385 transitions. Word has length 118 [2018-10-24 22:31:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:34,065 INFO L481 AbstractCegarLoop]: Abstraction has 13145 states and 19385 transitions. [2018-10-24 22:31:34,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:31:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 19385 transitions. [2018-10-24 22:31:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 22:31:34,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:34,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:31:34,076 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:34,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:34,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2110567223, now seen corresponding path program 1 times [2018-10-24 22:31:34,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:34,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:34,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:34,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:34,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:34,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:34,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:31:34,358 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:34,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:31:34,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:31:34,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:31:34,360 INFO L87 Difference]: Start difference. First operand 13145 states and 19385 transitions. Second operand 6 states. [2018-10-24 22:32:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:01,055 INFO L93 Difference]: Finished difference Result 39965 states and 60309 transitions. [2018-10-24 22:32:01,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:32:01,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 22:32:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:01,186 INFO L225 Difference]: With dead ends: 39965 [2018-10-24 22:32:01,186 INFO L226 Difference]: Without dead ends: 26826 [2018-10-24 22:32:01,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26826 states. [2018-10-24 22:32:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26826 to 26587. [2018-10-24 22:32:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26587 states. [2018-10-24 22:32:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26587 states to 26587 states and 38702 transitions. [2018-10-24 22:32:01,859 INFO L78 Accepts]: Start accepts. Automaton has 26587 states and 38702 transitions. Word has length 128 [2018-10-24 22:32:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:01,860 INFO L481 AbstractCegarLoop]: Abstraction has 26587 states and 38702 transitions. [2018-10-24 22:32:01,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26587 states and 38702 transitions. [2018-10-24 22:32:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 22:32:01,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:01,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:32:01,867 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:01,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:01,868 INFO L82 PathProgramCache]: Analyzing trace with hash 708423687, now seen corresponding path program 1 times [2018-10-24 22:32:01,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:01,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:01,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:01,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:01,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:02,168 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:32:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:02,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:02,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:02,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:02,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:02,602 INFO L87 Difference]: Start difference. First operand 26587 states and 38702 transitions. Second operand 6 states. [2018-10-24 22:32:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:24,830 INFO L93 Difference]: Finished difference Result 70723 states and 107469 transitions. [2018-10-24 22:32:24,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:24,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-24 22:32:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:24,975 INFO L225 Difference]: With dead ends: 70723 [2018-10-24 22:32:24,976 INFO L226 Difference]: Without dead ends: 44142 [2018-10-24 22:32:25,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44142 states. [2018-10-24 22:32:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44142 to 43950. [2018-10-24 22:32:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43950 states. [2018-10-24 22:32:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43950 states to 43950 states and 61266 transitions. [2018-10-24 22:32:26,231 INFO L78 Accepts]: Start accepts. Automaton has 43950 states and 61266 transitions. Word has length 161 [2018-10-24 22:32:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:26,232 INFO L481 AbstractCegarLoop]: Abstraction has 43950 states and 61266 transitions. [2018-10-24 22:32:26,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43950 states and 61266 transitions. [2018-10-24 22:32:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 22:32:26,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:26,241 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:32:26,241 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:26,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1186440308, now seen corresponding path program 1 times [2018-10-24 22:32:26,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:26,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:26,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:26,539 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:32:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 78 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:32:26,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:32:26,936 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:32:26,941 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-24 22:32:26,946 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5494], [5496], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5724], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 22:32:27,026 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:32:27,026 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:32:29,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:32:29,357 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:32:29,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:29,397 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:32:31,663 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 75.66% of their original sizes. [2018-10-24 22:32:31,668 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:32:32,148 INFO L413 sIntCurrentIteration]: We have 196 unified AI predicates [2018-10-24 22:32:32,149 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:32:32,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:32:32,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:32:32,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:32,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:32:32,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:32:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:32:32,152 INFO L87 Difference]: Start difference. First operand 43950 states and 61266 transitions. Second operand 7 states. [2018-10-24 22:32:36,333 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 22:33:44,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:33:44,967 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:33:44,972 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:33:44,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:33:44 BoogieIcfgContainer [2018-10-24 22:33:44,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:33:44,974 INFO L168 Benchmark]: Toolchain (without parser) took 213354.22 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -487.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,975 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:33:44,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3700.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 806.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,977 INFO L168 Benchmark]: Boogie Preprocessor took 576.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,978 INFO L168 Benchmark]: RCFGBuilder took 17331.68 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.8 MB). Peak memory consumption was 675.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,979 INFO L168 Benchmark]: TraceAbstraction took 190933.83 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -179.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:33:44,985 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3700.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 806.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 576.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17331.68 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.8 MB). Peak memory consumption was 675.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190933.83 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -179.3 MB). Peak memory consumption was 1.4 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 (43950states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (11602 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 190.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 180.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3316 SDtfs, 27682 SDslu, 3131 SDs, 0 SdLazy, 42217 SolverSat, 9757 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 133.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43950occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952590266875979 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 1027.811224489796 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 536 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 650 NumberOfCodeBlocks, 650 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 386373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 200/265 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown