java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:09:10,609 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:09:10,611 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:09:10,632 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:09:10,633 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:09:10,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:09:10,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:09:10,637 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:09:10,639 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:09:10,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:09:10,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:09:10,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:09:10,642 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:09:10,643 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:09:10,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:09:10,647 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:09:10,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:09:10,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:09:10,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:09:10,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:09:10,665 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:09:10,666 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:09:10,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:09:10,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:09:10,674 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:09:10,675 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:09:10,676 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:09:10,677 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:09:10,677 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:09:10,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:09:10,682 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:09:10,682 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:09:10,686 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:09:10,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:09:10,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:09:10,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:09:10,717 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:09:10,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:09:10,718 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:09:10,718 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:09:10,719 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:09:10,719 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:09:10,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:09:10,720 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:09:10,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:09:10,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:09:10,721 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:09:10,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:09:10,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:09:10,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:09:10,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:09:10,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:09:10,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:09:10,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:09:10,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:10,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:09:10,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:09:10,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:09:10,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:09:10,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:09:10,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:09:10,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:09:10,724 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:09:10,724 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:09:10,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:09:10,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:09:10,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:09:10,787 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:09:10,787 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:09:10,788 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-10-25 00:09:10,844 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b41b92749/eebd5b1bab194e60b0d53059c3b279d0/FLAGac1255aba [2018-10-25 00:09:11,454 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:09:11,455 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-10-25 00:09:11,471 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b41b92749/eebd5b1bab194e60b0d53059c3b279d0/FLAGac1255aba [2018-10-25 00:09:11,488 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b41b92749/eebd5b1bab194e60b0d53059c3b279d0 [2018-10-25 00:09:11,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:09:11,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:09:11,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:11,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:09:11,507 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:09:11,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:11" (1/1) ... [2018-10-25 00:09:11,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dfb9dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:11, skipping insertion in model container [2018-10-25 00:09:11,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:11" (1/1) ... [2018-10-25 00:09:11,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:09:11,598 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:09:12,238 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:12,243 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:09:12,522 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:12,546 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:09:12,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12 WrapperNode [2018-10-25 00:09:12,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:12,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:12,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:09:12,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:09:12,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:12,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:09:12,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:09:12,873 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:09:12,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:12,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:13,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... [2018-10-25 00:09:13,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:09:13,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:09:13,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:09:13,023 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:09:13,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:09:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:09:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:09:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:09:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:09:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:09:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:09:13,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:09:18,305 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:09:18,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:18 BoogieIcfgContainer [2018-10-25 00:09:18,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:09:18,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:09:18,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:09:18,316 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:09:18,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:09:11" (1/3) ... [2018-10-25 00:09:18,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36804749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:18, skipping insertion in model container [2018-10-25 00:09:18,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:12" (2/3) ... [2018-10-25 00:09:18,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36804749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:18, skipping insertion in model container [2018-10-25 00:09:18,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:18" (3/3) ... [2018-10-25 00:09:18,321 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01_true-unreach-call.c [2018-10-25 00:09:18,333 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:09:18,347 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:09:18,366 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:09:18,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:09:18,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:09:18,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:09:18,420 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:09:18,420 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:09:18,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:09:18,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:09:18,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:09:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:09:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-25 00:09:18,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:18,496 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:18,499 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:18,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1178454204, now seen corresponding path program 1 times [2018-10-25 00:09:18,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:18,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:18,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:18,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:18,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:19,504 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:09:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:19,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:19,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:19,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:19,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:19,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:19,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:19,745 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:09:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:21,885 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-25 00:09:21,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:21,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-10-25 00:09:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:21,910 INFO L225 Difference]: With dead ends: 844 [2018-10-25 00:09:21,910 INFO L226 Difference]: Without dead ends: 530 [2018-10-25 00:09:21,918 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 [2018-10-25 00:09:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-25 00:09:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-25 00:09:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-25 00:09:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-25 00:09:22,025 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 193 [2018-10-25 00:09:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:22,026 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-25 00:09:22,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-25 00:09:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-25 00:09:22,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:22,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:22,041 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:22,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash 851918400, now seen corresponding path program 1 times [2018-10-25 00:09:22,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:22,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:22,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:22,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:22,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:22,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:22,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:22,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:22,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:22,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:22,576 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-25 00:09:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:24,747 INFO L93 Difference]: Finished difference Result 1477 states and 2511 transitions. [2018-10-25 00:09:24,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:24,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2018-10-25 00:09:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:24,755 INFO L225 Difference]: With dead ends: 1477 [2018-10-25 00:09:24,755 INFO L226 Difference]: Without dead ends: 958 [2018-10-25 00:09:24,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-10-25 00:09:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 943. [2018-10-25 00:09:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-10-25 00:09:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1546 transitions. [2018-10-25 00:09:24,804 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1546 transitions. Word has length 206 [2018-10-25 00:09:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:24,804 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1546 transitions. [2018-10-25 00:09:24,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1546 transitions. [2018-10-25 00:09:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-25 00:09:24,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:24,811 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:24,811 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:24,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash 584750157, now seen corresponding path program 1 times [2018-10-25 00:09:24,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:24,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:24,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:24,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:24,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:25,087 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:09:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:25,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:25,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:09:25,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:25,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:09:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:09:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:09:25,558 INFO L87 Difference]: Start difference. First operand 943 states and 1546 transitions. Second operand 6 states. [2018-10-25 00:09:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:29,777 INFO L93 Difference]: Finished difference Result 2885 states and 4975 transitions. [2018-10-25 00:09:29,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:09:29,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-25 00:09:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:29,808 INFO L225 Difference]: With dead ends: 2885 [2018-10-25 00:09:29,809 INFO L226 Difference]: Without dead ends: 1948 [2018-10-25 00:09:29,813 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 [2018-10-25 00:09:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2018-10-25 00:09:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1883. [2018-10-25 00:09:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2018-10-25 00:09:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3103 transitions. [2018-10-25 00:09:29,934 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3103 transitions. Word has length 211 [2018-10-25 00:09:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:29,935 INFO L481 AbstractCegarLoop]: Abstraction has 1883 states and 3103 transitions. [2018-10-25 00:09:29,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:09:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3103 transitions. [2018-10-25 00:09:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-25 00:09:29,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:29,944 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:29,945 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:29,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -223286947, now seen corresponding path program 1 times [2018-10-25 00:09:29,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:29,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:29,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:29,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:29,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:30,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:09:30,292 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:09:30,293 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-25 00:09:30,295 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:09:30,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:09:30,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:09:31,708 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:09:31,710 INFO L272 AbstractInterpreter]: Visited 194 different actions 194 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:09:31,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:31,751 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:09:32,833 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.89% of their original sizes. [2018-10-25 00:09:32,834 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:09:33,375 INFO L413 sIntCurrentIteration]: We have 217 unified AI predicates [2018-10-25 00:09:33,375 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:09:33,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:09:33,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-10-25 00:09:33,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:33,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 00:09:33,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 00:09:33,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:09:33,378 INFO L87 Difference]: Start difference. First operand 1883 states and 3103 transitions. Second operand 16 states. [2018-10-25 00:10:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:10:45,572 INFO L93 Difference]: Finished difference Result 3970 states and 6516 transitions. [2018-10-25 00:10:45,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:10:45,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 218 [2018-10-25 00:10:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:10:45,584 INFO L225 Difference]: With dead ends: 3970 [2018-10-25 00:10:45,584 INFO L226 Difference]: Without dead ends: 2093 [2018-10-25 00:10:45,590 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-10-25 00:10:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-10-25 00:10:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2091. [2018-10-25 00:10:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2018-10-25 00:10:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3320 transitions. [2018-10-25 00:10:45,648 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3320 transitions. Word has length 218 [2018-10-25 00:10:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:10:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 2091 states and 3320 transitions. [2018-10-25 00:10:45,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 00:10:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3320 transitions. [2018-10-25 00:10:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-25 00:10:45,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:10:45,658 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:10:45,659 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:10:45,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:45,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1470271054, now seen corresponding path program 1 times [2018-10-25 00:10:45,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:10:45,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:45,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:10:45,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:10:45,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:10:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:10:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:10:45,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:10:45,868 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:10:45,868 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-25 00:10:45,869 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:10:45,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:10:45,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:10:48,314 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:10:48,314 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:10:48,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:10:48,322 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:10:51,425 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 75.66% of their original sizes. [2018-10-25 00:10:51,425 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:10:59,307 INFO L413 sIntCurrentIteration]: We have 224 unified AI predicates [2018-10-25 00:10:59,307 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:10:59,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:10:59,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:10:59,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:10:59,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:10:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:10:59,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:10:59,310 INFO L87 Difference]: Start difference. First operand 2091 states and 3320 transitions. Second operand 20 states. [2018-10-25 00:12:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:54,522 INFO L93 Difference]: Finished difference Result 5502 states and 9099 transitions. [2018-10-25 00:12:54,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-25 00:12:54,523 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 225 [2018-10-25 00:12:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:54,543 INFO L225 Difference]: With dead ends: 5502 [2018-10-25 00:12:54,543 INFO L226 Difference]: Without dead ends: 3625 [2018-10-25 00:12:54,552 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 83 SyntacticMatches, 123 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2018-10-25 00:12:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2018-10-25 00:12:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3613. [2018-10-25 00:12:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2018-10-25 00:12:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5380 transitions. [2018-10-25 00:12:54,658 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5380 transitions. Word has length 225 [2018-10-25 00:12:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:54,658 INFO L481 AbstractCegarLoop]: Abstraction has 3613 states and 5380 transitions. [2018-10-25 00:12:54,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:12:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5380 transitions. [2018-10-25 00:12:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-25 00:12:54,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:54,672 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:54,672 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:54,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1234399812, now seen corresponding path program 1 times [2018-10-25 00:12:54,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:54,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:54,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:54,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:54,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:54,942 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:12:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:12:55,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:55,282 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:55,283 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-25 00:12:55,284 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:12:55,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:55,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:01,045 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:01,046 INFO L272 AbstractInterpreter]: Visited 199 different actions 592 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:13:01,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:01,052 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:01,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:01,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:13:01,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:01,062 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:01,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-25 00:13:01,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-25 00:13:02,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 00:13:02,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-10-25 00:13:02,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:02,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:13:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:13:02,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:13:02,838 INFO L87 Difference]: Start difference. First operand 3613 states and 5380 transitions. Second operand 5 states. [2018-10-25 00:13:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:04,014 INFO L93 Difference]: Finished difference Result 9077 states and 14402 transitions. [2018-10-25 00:13:04,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:13:04,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-10-25 00:13:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:04,048 INFO L225 Difference]: With dead ends: 9077 [2018-10-25 00:13:04,049 INFO L226 Difference]: Without dead ends: 6347 [2018-10-25 00:13:04,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 446 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:13:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2018-10-25 00:13:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6344. [2018-10-25 00:13:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2018-10-25 00:13:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 9919 transitions. [2018-10-25 00:13:04,259 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 9919 transitions. Word has length 228 [2018-10-25 00:13:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:04,259 INFO L481 AbstractCegarLoop]: Abstraction has 6344 states and 9919 transitions. [2018-10-25 00:13:04,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:13:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 9919 transitions. [2018-10-25 00:13:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-25 00:13:04,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:04,281 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:04,281 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:04,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:04,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1815954702, now seen corresponding path program 1 times [2018-10-25 00:13:04,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:04,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:04,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:04,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:04,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:04,560 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:04,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:04,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:04,796 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-25 00:13:04,796 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:04,802 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:04,803 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:10,563 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:10,564 INFO L272 AbstractInterpreter]: Visited 198 different actions 595 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:13:10,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:10,573 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:10,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:10,573 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:13:10,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:10,581 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:10,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:10,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:11,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:13:11,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:13:11,120 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:13:11,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:13:11,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:13:11,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:13:11,121 INFO L87 Difference]: Start difference. First operand 6344 states and 9919 transitions. Second operand 12 states. Received shutdown request... [2018-10-25 00:13:17,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-25 00:13:17,785 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:13:17,790 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:13:17,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:13:17 BoogieIcfgContainer [2018-10-25 00:13:17,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:13:17,792 INFO L168 Benchmark]: Toolchain (without parser) took 246291.23 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,793 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-25 00:13:17,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1044.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 324.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,795 INFO L168 Benchmark]: Boogie Preprocessor took 149.52 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,796 INFO L168 Benchmark]: RCFGBuilder took 5283.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.2 MB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,797 INFO L168 Benchmark]: TraceAbstraction took 239478.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -668.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:17,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1044.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 324.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.52 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5283.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.2 MB). Peak memory consumption was 262.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239478.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -668.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1593]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1593). Cancelled while BasicCegarLoop was constructing difference of abstraction (6344states) and FLOYD_HOARE automaton (currently 31 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (21883 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 239.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 203.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1739 SDtfs, 10602 SDslu, 3159 SDs, 0 SdLazy, 17555 SolverSat, 2880 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1442 GetRequests, 1201 SyntacticMatches, 135 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6344occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.4s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9990430651907863 AbsIntWeakeningRatio, 0.2811791383219955 AbsIntAvgWeakeningVarsNumRemoved, 30.687074829931973 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 102 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1963 NumberOfCodeBlocks, 1963 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2407 ConstructedInterpolants, 0 QuantifiedInterpolants, 871142 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2255 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 359/384 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown