java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem16_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:14:43,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:14:43,756 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:14:43,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:14:43,770 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:14:43,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:14:43,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:14:43,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:14:43,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:14:43,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:14:43,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:14:43,785 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:14:43,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:14:43,789 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:14:43,790 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:14:43,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:14:43,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:14:43,802 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:14:43,804 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:14:43,808 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:14:43,809 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:14:43,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:14:43,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 09:14:43,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:14:43,823 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:14:43,824 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:14:43,825 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:14:43,825 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:14:43,851 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:14:43,851 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:14:43,853 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:14:43,853 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:14:43,854 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:14:43,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:14:43,854 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:14:43,854 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:14:43,854 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:14:43,858 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:14:43,858 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:14:43,858 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:14:43,859 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:14:43,859 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:14:43,860 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:14:43,860 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:14:43,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:14:43,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:14:43,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:14:43,861 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:14:43,861 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:14:43,861 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:14:43,861 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:14:43,861 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:14:43,862 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:14:43,863 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:14:43,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:14:43,864 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:14:43,864 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:14:43,864 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:14:43,864 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:14:43,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:14:43,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:14:43,865 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:14:43,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:14:43,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:14:43,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:14:43,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:14:43,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:14:43,941 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:14:43,942 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:14:43,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21_true-unreach-call.c [2018-11-07 09:14:44,009 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f306f54/d392d9b6675f4cbcb55cf7619fe4c291/FLAG09311187d [2018-11-07 09:14:44,654 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:14:44,655 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label21_true-unreach-call.c [2018-11-07 09:14:44,676 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f306f54/d392d9b6675f4cbcb55cf7619fe4c291/FLAG09311187d [2018-11-07 09:14:44,694 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f306f54/d392d9b6675f4cbcb55cf7619fe4c291 [2018-11-07 09:14:44,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:14:44,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:14:44,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:14:44,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:14:44,713 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:14:44,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:14:44" (1/1) ... [2018-11-07 09:14:44,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:44, skipping insertion in model container [2018-11-07 09:14:44,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:14:44" (1/1) ... [2018-11-07 09:14:44,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:14:44,830 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:14:45,631 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:14:45,638 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:14:45,952 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:14:45,975 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:14:45,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45 WrapperNode [2018-11-07 09:14:45,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:14:45,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:14:45,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:14:45,977 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:14:45,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:14:46,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:14:46,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:14:46,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:14:46,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... [2018-11-07 09:14:46,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:14:46,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:14:46,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:14:46,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:14:46,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:14:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:14:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:14:46,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:14:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:14:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:14:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:14:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:14:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:14:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:14:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:14:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:14:52,442 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:14:52,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:14:52 BoogieIcfgContainer [2018-11-07 09:14:52,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:14:52,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:14:52,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:14:52,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:14:52,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:14:44" (1/3) ... [2018-11-07 09:14:52,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:14:52, skipping insertion in model container [2018-11-07 09:14:52,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:14:45" (2/3) ... [2018-11-07 09:14:52,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:14:52, skipping insertion in model container [2018-11-07 09:14:52,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:14:52" (3/3) ... [2018-11-07 09:14:52,453 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label21_true-unreach-call.c [2018-11-07 09:14:52,463 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:14:52,472 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:14:52,486 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:14:52,528 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:14:52,528 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:14:52,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:14:52,529 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:14:52,529 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:14:52,529 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:14:52,529 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:14:52,529 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:14:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:14:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 09:14:52,588 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:14:52,591 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] [2018-11-07 09:14:52,595 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:14:52,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:14:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1498004389, now seen corresponding path program 1 times [2018-11-07 09:14:52,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:14:52,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:52,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:14:52,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:52,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:14:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:14:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:14:53,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:14:53,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:14:53,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:14:53,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:14:53,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:14:53,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:14:53,195 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 09:14:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:14:56,755 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 09:14:56,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:14:56,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-07 09:14:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:14:56,782 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 09:14:56,782 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 09:14:56,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:14:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 09:14:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 09:14:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:14:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 09:14:56,911 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 45 [2018-11-07 09:14:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:14:56,912 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 09:14:56,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:14:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 09:14:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 09:14:56,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:14:56,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:14:56,926 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:14:56,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:14:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash -440618184, now seen corresponding path program 1 times [2018-11-07 09:14:56,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:14:56,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:56,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:14:56,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:56,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:14:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:14:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:14:57,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:14:57,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:14:57,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:14:57,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:14:57,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:14:57,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:14:57,436 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 09:15:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:15:04,064 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 09:15:04,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:15:04,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 09:15:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:15:04,092 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 09:15:04,092 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 09:15:04,099 INFO L604 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 [2018-11-07 09:15:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 09:15:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 09:15:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 09:15:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 09:15:04,188 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 153 [2018-11-07 09:15:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:15:04,189 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 09:15:04,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:15:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 09:15:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 09:15:04,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:15:04,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:15:04,202 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:15:04,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:15:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1136180315, now seen corresponding path program 1 times [2018-11-07 09:15:04,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:15:04,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:15:04,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:15:04,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:15:04,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:15:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:15:04,521 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:15:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:15:04,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:15:04,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:15:04,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:15:04,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:15:04,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:15:04,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:15:04,599 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 09:15:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:15:10,383 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 09:15:10,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:15:10,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-07 09:15:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:15:10,404 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 09:15:10,405 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 09:15:10,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:15:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 09:15:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 09:15:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 09:15:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 09:15:10,492 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 156 [2018-11-07 09:15:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:15:10,493 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 09:15:10,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:15:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 09:15:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-07 09:15:10,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:15:10,502 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:15:10,502 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:15:10,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:15:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash -167171944, now seen corresponding path program 1 times [2018-11-07 09:15:10,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:15:10,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:15:10,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:15:10,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:15:10,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:15:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:15:10,816 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:15:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 76 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:15:11,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:15:11,108 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:15:11,109 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 273 with the following transitions: [2018-11-07 09:15:11,111 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [439], [441], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:15:11,161 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:15:11,161 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:15:11,797 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:15:11,802 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:15:11,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:15:11,852 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:15:12,471 INFO L227 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-07 09:15:12,472 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:15:12,734 INFO L415 sIntCurrentIteration]: We unified 271 AI predicates to 271 [2018-11-07 09:15:12,735 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:15:12,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:15:12,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:15:12,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:15:12,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:15:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:15:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:15:12,739 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 6 states. [2018-11-07 09:16:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:16:30,925 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-11-07 09:16:30,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:16:30,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 272 [2018-11-07 09:16:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:16:30,942 INFO L225 Difference]: With dead ends: 5282 [2018-11-07 09:16:30,942 INFO L226 Difference]: Without dead ends: 2814 [2018-11-07 09:16:30,950 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:16:30,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-11-07 09:16:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-11-07 09:16:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 09:16:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 09:16:31,025 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 272 [2018-11-07 09:16:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:16:31,026 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 09:16:31,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:16:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 09:16:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-07 09:16:31,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:16:31,034 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:16:31,034 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:16:31,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:16:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash 188625339, now seen corresponding path program 1 times [2018-11-07 09:16:31,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:16:31,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:16:31,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:16:31,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:16:31,036 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:16:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:16:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 209 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 09:16:31,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:16:31,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:16:31,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-11-07 09:16:31,671 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [439], [441], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:16:31,686 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:16:31,692 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:16:31,978 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:16:31,979 INFO L272 AbstractInterpreter]: Visited 126 different actions 364 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:16:32,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:16:32,015 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:16:32,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:16:32,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:16:32,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:16:32,035 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:16:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:16:32,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:16:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-07 09:16:32,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:16:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 209 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 09:16:33,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:16:33,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:16:33,439 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:16:33,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:16:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:16:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:16:33,440 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 9 states. [2018-11-07 09:16:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:16:47,483 INFO L93 Difference]: Finished difference Result 11117 states and 16850 transitions. [2018-11-07 09:16:47,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 09:16:47,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2018-11-07 09:16:47,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:16:47,523 INFO L225 Difference]: With dead ends: 11117 [2018-11-07 09:16:47,524 INFO L226 Difference]: Without dead ends: 7304 [2018-11-07 09:16:47,586 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 761 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-11-07 09:16:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2018-11-07 09:16:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7038. [2018-11-07 09:16:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7038 states. [2018-11-07 09:16:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 7989 transitions. [2018-11-07 09:16:47,809 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 7989 transitions. Word has length 364 [2018-11-07 09:16:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:16:47,810 INFO L480 AbstractCegarLoop]: Abstraction has 7038 states and 7989 transitions. [2018-11-07 09:16:47,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:16:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 7989 transitions. [2018-11-07 09:16:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-11-07 09:16:47,826 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:16:47,826 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:16:47,827 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:16:47,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:16:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1738444371, now seen corresponding path program 1 times [2018-11-07 09:16:47,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:16:47,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:16:47,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:16:47,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:16:47,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:16:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:16:48,491 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 09:16:48,672 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 09:16:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 224 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 09:16:49,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:16:49,968 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:16:49,968 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 513 with the following transitions: [2018-11-07 09:16:49,968 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [439], [441], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:16:49,976 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:16:49,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:16:50,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:16:50,423 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:16:50,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:16:50,461 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:16:51,095 INFO L227 lantSequenceWeakener]: Weakened 509 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-07 09:16:51,096 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:16:51,834 INFO L415 sIntCurrentIteration]: We unified 511 AI predicates to 511 [2018-11-07 09:16:51,834 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:16:51,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:16:51,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-07 09:16:51,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:16:51,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:16:51,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:16:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:16:51,836 INFO L87 Difference]: Start difference. First operand 7038 states and 7989 transitions. Second operand 10 states. [2018-11-07 09:18:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:44,314 INFO L93 Difference]: Finished difference Result 14075 states and 16021 transitions. [2018-11-07 09:18:44,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:18:44,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 512 [2018-11-07 09:18:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:44,346 INFO L225 Difference]: With dead ends: 14075 [2018-11-07 09:18:44,347 INFO L226 Difference]: Without dead ends: 7381 [2018-11-07 09:18:44,367 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 519 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:18:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2018-11-07 09:18:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7378. [2018-11-07 09:18:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7378 states. [2018-11-07 09:18:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 8335 transitions. [2018-11-07 09:18:44,551 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 8335 transitions. Word has length 512 [2018-11-07 09:18:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:44,553 INFO L480 AbstractCegarLoop]: Abstraction has 7378 states and 8335 transitions. [2018-11-07 09:18:44,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:18:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 8335 transitions. [2018-11-07 09:18:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2018-11-07 09:18:44,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:44,576 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:18:44,576 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:44,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1995252425, now seen corresponding path program 1 times [2018-11-07 09:18:44,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:44,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:44,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:44,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:44,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:45,072 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 164 proven. 389 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-07 09:18:45,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:18:45,344 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:18:45,345 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 622 with the following transitions: [2018-11-07 09:18:45,345 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [439], [441], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:18:45,351 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:18:45,351 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:18:45,380 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:18:45,381 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:18:45,381 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:18:45,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:18:45,381 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 09:18:45,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:45,391 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:18:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:45,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:18:45,580 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:18:45,782 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:18:45,782 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:18:45,788 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:18:45,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:18:45 BoogieIcfgContainer [2018-11-07 09:18:45,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:18:45,789 INFO L168 Benchmark]: Toolchain (without parser) took 241082.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 09:18:45,791 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. [2018-11-07 09:18:45,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1267.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:18:45,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:18:45,793 INFO L168 Benchmark]: Boogie Preprocessor took 174.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:18:45,794 INFO L168 Benchmark]: RCFGBuilder took 6073.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:18:45,794 INFO L168 Benchmark]: TraceAbstraction took 233344.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -623.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:18:45,800 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 1267.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6073.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233344.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -623.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was analyzing trace of length 622 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.2s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 220.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1153 SDtfs, 9400 SDslu, 1451 SDs, 0 SdLazy, 18225 SolverSat, 4320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 193.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1625 GetRequests, 1537 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7378occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.997999574464603 AbsIntWeakeningRatio, 0.0741687979539642 AbsIntAvgWeakeningVarsNumRemoved, 16.52173913043478 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 302 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1866 NumberOfCodeBlocks, 1866 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2222 ConstructedInterpolants, 0 QuantifiedInterpolants, 3994793 SizeOfPredicates, 1 NumberOfNonLiveVariables, 592 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1491/1942 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown