java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:43:13,922 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:43:13,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:43:13,937 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:43:13,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:43:13,938 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:43:13,939 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:43:13,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:43:13,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:43:13,944 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:43:13,945 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:43:13,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:43:13,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:43:13,947 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:43:13,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:43:13,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:43:13,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:43:13,952 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:43:13,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:43:13,956 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:43:13,957 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:43:13,958 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:43:13,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 01:43:13,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 01:43:13,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 01:43:13,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 01:43:13,969 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 01:43:13,970 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 01:43:13,971 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 01:43:13,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 01:43:13,975 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 01:43:13,976 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 01:43:13,976 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:43:13,976 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:43:13,979 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:43:13,980 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:43:13,980 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:43:14,012 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:43:14,012 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:43:14,013 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:43:14,013 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:43:14,014 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:43:14,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:43:14,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:43:14,016 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:43:14,016 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:43:14,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:43:14,017 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:43:14,017 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:43:14,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:43:14,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:43:14,018 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:43:14,018 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:43:14,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:43:14,020 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:43:14,020 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:43:14,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:43:14,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:43:14,021 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:43:14,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:43:14,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:43:14,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:43:14,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:43:14,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:43:14,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:43:14,023 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:43:14,023 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:43:14,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:43:14,023 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:43:14,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:43:14,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:43:14,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:43:14,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:43:14,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:43:14,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:43:14,092 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:43:14,093 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-24 01:43:14,155 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e27c54b16/96b0541c0f614437a33d5cdab5616c83/FLAG91f91e510 [2018-10-24 01:43:14,834 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:43:14,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-24 01:43:14,858 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e27c54b16/96b0541c0f614437a33d5cdab5616c83/FLAG91f91e510 [2018-10-24 01:43:14,878 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e27c54b16/96b0541c0f614437a33d5cdab5616c83 [2018-10-24 01:43:14,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:43:14,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:43:14,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:43:14,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:43:14,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:43:14,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:43:14" (1/1) ... [2018-10-24 01:43:14,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:14, skipping insertion in model container [2018-10-24 01:43:14,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:43:14" (1/1) ... [2018-10-24 01:43:14,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:43:15,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:43:15,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:43:15,908 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:43:16,279 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:43:16,298 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:43:16,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16 WrapperNode [2018-10-24 01:43:16,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:43:16,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:43:16,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:43:16,300 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:43:16,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:43:16,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:43:16,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:43:16,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:43:16,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... [2018-10-24 01:43:16,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:43:16,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:43:16,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:43:16,889 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:43:16,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:43:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:43:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:43:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:43:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:43:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:43:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:43:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:43:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:43:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:43:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:43:24,979 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:43:24,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:43:24 BoogieIcfgContainer [2018-10-24 01:43:24,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:43:24,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:43:24,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:43:24,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:43:24,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:43:14" (1/3) ... [2018-10-24 01:43:24,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2391b2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:43:24, skipping insertion in model container [2018-10-24 01:43:24,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:16" (2/3) ... [2018-10-24 01:43:24,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2391b2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:43:24, skipping insertion in model container [2018-10-24 01:43:24,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:43:24" (3/3) ... [2018-10-24 01:43:24,990 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-10-24 01:43:25,000 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:43:25,009 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:43:25,027 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:43:25,068 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:43:25,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:43:25,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:43:25,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:43:25,069 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:43:25,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:43:25,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:43:25,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:43:25,103 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:43:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 01:43:25,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:25,113 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] [2018-10-24 01:43:25,116 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:25,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1425761551, now seen corresponding path program 1 times [2018-10-24 01:43:25,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:25,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:25,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:25,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:25,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:25,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:25,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:43:25,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:25,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:43:25,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:43:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:43:25,616 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 01:43:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:31,136 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-10-24 01:43:31,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:43:31,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-10-24 01:43:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:31,178 INFO L225 Difference]: With dead ends: 1198 [2018-10-24 01:43:31,179 INFO L226 Difference]: Without dead ends: 758 [2018-10-24 01:43:31,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:43:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-10-24 01:43:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-10-24 01:43:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-10-24 01:43:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-10-24 01:43:31,349 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-10-24 01:43:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:31,349 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-10-24 01:43:31,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:43:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-10-24 01:43:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 01:43:31,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:31,357 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] [2018-10-24 01:43:31,358 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:31,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 146607380, now seen corresponding path program 1 times [2018-10-24 01:43:31,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:31,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:31,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:31,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:31,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:31,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:31,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:43:31,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:31,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:43:31,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:43:31,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:43:31,646 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-10-24 01:43:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:39,684 INFO L93 Difference]: Finished difference Result 2229 states and 3961 transitions. [2018-10-24 01:43:39,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:43:39,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-24 01:43:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:39,697 INFO L225 Difference]: With dead ends: 2229 [2018-10-24 01:43:39,698 INFO L226 Difference]: Without dead ends: 1481 [2018-10-24 01:43:39,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:43:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2018-10-24 01:43:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1449. [2018-10-24 01:43:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-10-24 01:43:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-10-24 01:43:39,760 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 119 [2018-10-24 01:43:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:39,761 INFO L481 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-10-24 01:43:39,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:43:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-10-24 01:43:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 01:43:39,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:39,768 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] [2018-10-24 01:43:39,768 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:39,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash -762150644, now seen corresponding path program 1 times [2018-10-24 01:43:39,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:39,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:39,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:39,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:39,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:40,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:40,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:43:40,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:40,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:43:40,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:43:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:43:40,040 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-10-24 01:43:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:47,987 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-10-24 01:43:47,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:43:47,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 01:43:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:48,005 INFO L225 Difference]: With dead ends: 4188 [2018-10-24 01:43:48,006 INFO L226 Difference]: Without dead ends: 2745 [2018-10-24 01:43:48,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:43:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-10-24 01:43:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-10-24 01:43:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-10-24 01:43:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-10-24 01:43:48,094 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 131 [2018-10-24 01:43:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:48,095 INFO L481 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-10-24 01:43:48,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:43:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-10-24 01:43:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 01:43:48,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:48,097 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] [2018-10-24 01:43:48,101 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:48,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash -131413768, now seen corresponding path program 1 times [2018-10-24 01:43:48,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:48,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:48,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:48,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:48,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:48,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:48,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:43:48,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:48,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:43:48,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:43:48,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:43:48,537 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-10-24 01:43:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:54,297 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-10-24 01:43:54,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:43:54,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-24 01:43:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:54,320 INFO L225 Difference]: With dead ends: 6682 [2018-10-24 01:43:54,320 INFO L226 Difference]: Without dead ends: 3977 [2018-10-24 01:43:54,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:43:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-10-24 01:43:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-10-24 01:43:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-10-24 01:43:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-10-24 01:43:54,435 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 132 [2018-10-24 01:43:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:54,436 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-10-24 01:43:54,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:43:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-10-24 01:43:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 01:43:54,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:54,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:43:54,439 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:54,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:54,439 INFO L82 PathProgramCache]: Analyzing trace with hash 61536093, now seen corresponding path program 1 times [2018-10-24 01:43:54,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:54,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:54,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:54,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:54,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:54,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:54,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:43:54,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:54,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:43:54,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:43:54,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:43:54,774 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-10-24 01:44:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:44:11,331 INFO L93 Difference]: Finished difference Result 14092 states and 19045 transitions. [2018-10-24 01:44:11,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:44:11,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-24 01:44:11,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:44:11,386 INFO L225 Difference]: With dead ends: 14092 [2018-10-24 01:44:11,386 INFO L226 Difference]: Without dead ends: 10145 [2018-10-24 01:44:11,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:44:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10145 states. [2018-10-24 01:44:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10145 to 9934. [2018-10-24 01:44:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9934 states. [2018-10-24 01:44:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9934 states to 9934 states and 12579 transitions. [2018-10-24 01:44:11,671 INFO L78 Accepts]: Start accepts. Automaton has 9934 states and 12579 transitions. Word has length 172 [2018-10-24 01:44:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:44:11,672 INFO L481 AbstractCegarLoop]: Abstraction has 9934 states and 12579 transitions. [2018-10-24 01:44:11,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:44:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9934 states and 12579 transitions. [2018-10-24 01:44:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 01:44:11,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:44:11,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:44:11,681 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:44:11,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash 183841615, now seen corresponding path program 1 times [2018-10-24 01:44:11,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:44:11,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:11,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:44:11,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:11,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:44:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:44:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 01:44:12,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:44:12,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:44:12,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:44:12,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:44:12,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:44:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:44:12,038 INFO L87 Difference]: Start difference. First operand 9934 states and 12579 transitions. Second operand 4 states. [2018-10-24 01:44:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:44:18,393 INFO L93 Difference]: Finished difference Result 31159 states and 40874 transitions. [2018-10-24 01:44:18,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:44:18,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-10-24 01:44:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:44:18,507 INFO L225 Difference]: With dead ends: 31159 [2018-10-24 01:44:18,507 INFO L226 Difference]: Without dead ends: 21231 [2018-10-24 01:44:18,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:44:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21231 states. [2018-10-24 01:44:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21231 to 20903. [2018-10-24 01:44:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20903 states. [2018-10-24 01:44:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20903 states to 20903 states and 25690 transitions. [2018-10-24 01:44:19,069 INFO L78 Accepts]: Start accepts. Automaton has 20903 states and 25690 transitions. Word has length 200 [2018-10-24 01:44:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:44:19,070 INFO L481 AbstractCegarLoop]: Abstraction has 20903 states and 25690 transitions. [2018-10-24 01:44:19,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:44:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 20903 states and 25690 transitions. [2018-10-24 01:44:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-24 01:44:19,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:44:19,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:44:19,084 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:44:19,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1258150557, now seen corresponding path program 1 times [2018-10-24 01:44:19,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:44:19,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:19,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:44:19,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:19,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:44:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:44:19,349 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-10-24 01:44:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 01:44:19,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:44:19,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:44:19,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:44:19,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:44:19,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:44:19,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:44:19,378 INFO L87 Difference]: Start difference. First operand 20903 states and 25690 transitions. Second operand 3 states. [2018-10-24 01:44:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:44:24,320 INFO L93 Difference]: Finished difference Result 47534 states and 60369 transitions. [2018-10-24 01:44:24,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:44:24,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-10-24 01:44:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:44:24,435 INFO L225 Difference]: With dead ends: 47534 [2018-10-24 01:44:24,435 INFO L226 Difference]: Without dead ends: 26637 [2018-10-24 01:44:24,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:44:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26637 states. [2018-10-24 01:44:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26637 to 26543. [2018-10-24 01:44:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26543 states. [2018-10-24 01:44:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26543 states to 26543 states and 33539 transitions. [2018-10-24 01:44:25,111 INFO L78 Accepts]: Start accepts. Automaton has 26543 states and 33539 transitions. Word has length 213 [2018-10-24 01:44:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:44:25,111 INFO L481 AbstractCegarLoop]: Abstraction has 26543 states and 33539 transitions. [2018-10-24 01:44:25,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:44:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 26543 states and 33539 transitions. [2018-10-24 01:44:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 01:44:25,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:44:25,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:44:25,130 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:44:25,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:25,131 INFO L82 PathProgramCache]: Analyzing trace with hash -79355213, now seen corresponding path program 1 times [2018-10-24 01:44:25,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:44:25,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:25,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:44:25,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:25,133 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:44:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:44:25,556 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-24 01:44:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:44:25,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:44:25,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:44:25,933 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 01:44:25,936 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:44:26,044 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:44:26,044 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:44:28,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:44:28,655 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:44:28,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:28,669 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:44:31,009 INFO L232 lantSequenceWeakener]: Weakened 208 states. On average, predicates are now at 77.96% of their original sizes. [2018-10-24 01:44:31,009 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:44:31,443 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:44:31,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:44:31,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:44:31,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:44:31,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:44:31,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:44:31,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:44:31,446 INFO L87 Difference]: Start difference. First operand 26543 states and 33539 transitions. Second operand 7 states. [2018-10-24 01:44:34,322 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:45:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:45:11,052 INFO L93 Difference]: Finished difference Result 53390 states and 67433 transitions. [2018-10-24 01:45:11,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:45:11,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2018-10-24 01:45:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:45:11,137 INFO L225 Difference]: With dead ends: 53390 [2018-10-24 01:45:11,137 INFO L226 Difference]: Without dead ends: 26853 [2018-10-24 01:45:11,207 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:45:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26853 states. [2018-10-24 01:45:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26853 to 26851. [2018-10-24 01:45:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26851 states. [2018-10-24 01:45:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26851 states to 26851 states and 33856 transitions. [2018-10-24 01:45:11,709 INFO L78 Accepts]: Start accepts. Automaton has 26851 states and 33856 transitions. Word has length 218 [2018-10-24 01:45:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:45:11,709 INFO L481 AbstractCegarLoop]: Abstraction has 26851 states and 33856 transitions. [2018-10-24 01:45:11,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:45:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 26851 states and 33856 transitions. [2018-10-24 01:45:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-24 01:45:11,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:45:11,739 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, 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] [2018-10-24 01:45:11,739 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:45:11,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:45:11,740 INFO L82 PathProgramCache]: Analyzing trace with hash -174466883, now seen corresponding path program 1 times [2018-10-24 01:45:11,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:45:11,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:11,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:45:11,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:11,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:45:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:45:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 01:45:12,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:45:12,241 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:45:12,242 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-24 01:45:12,242 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:45:12,251 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:45:12,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:45:14,061 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:45:20,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:45:20,660 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:45:20,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:45:20,667 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:45:24,386 INFO L232 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-24 01:45:24,387 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 01:46:58,833 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:46:58,840 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:46:58,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:58 BoogieIcfgContainer [2018-10-24 01:46:58,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:46:58,841 INFO L168 Benchmark]: Toolchain (without parser) took 223949.14 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -2.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,843 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:46:58,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1405.23 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 421.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,846 INFO L168 Benchmark]: Boogie Preprocessor took 166.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,847 INFO L168 Benchmark]: RCFGBuilder took 8091.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 311.0 MB). Peak memory consumption was 311.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,849 INFO L168 Benchmark]: TraceAbstraction took 213858.65 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.4 GB in the end (delta: 418.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:46:58,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1405.23 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 421.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8091.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 311.0 MB). Peak memory consumption was 311.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213858.65 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.4 GB in the end (delta: 418.1 MB). Peak memory consumption was 2.2 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 315 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 213.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 95.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2063 SDtfs, 8424 SDslu, 1518 SDs, 0 SdLazy, 15236 SolverSat, 3410 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 67.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 270 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26851occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955530489472245 AbsIntWeakeningRatio, 0.11320754716981132 AbsIntAvgWeakeningVarsNumRemoved, 415.8301886792453 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 729 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1230 NumberOfCodeBlocks, 1230 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1222 ConstructedInterpolants, 0 QuantifiedInterpolants, 583385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 614/616 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown