java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:27:44,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:27:44,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:27:44,967 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:27:44,968 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:27:44,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:27:44,971 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:27:44,974 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:27:44,976 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:27:44,977 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:27:44,985 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:27:44,985 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:27:44,986 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:27:44,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:27:44,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:27:44,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:27:44,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:27:44,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:27:45,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:27:45,002 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:27:45,006 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:27:45,008 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:27:45,010 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:27:45,010 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:27:45,010 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:27:45,014 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:27:45,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:27:45,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:27:45,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:27:45,018 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:27:45,018 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:27:45,019 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:27:45,019 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:27:45,019 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:27:45,021 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:27:45,022 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:27:45,022 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:27:45,051 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:27:45,052 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:27:45,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:27:45,056 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:27:45,056 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:27:45,056 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:27:45,056 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:27:45,056 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:27:45,057 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:27:45,059 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:27:45,060 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:27:45,060 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:27:45,060 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:27:45,060 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:27:45,062 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:27:45,062 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:27:45,062 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:27:45,062 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:27:45,062 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:27:45,063 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:27:45,063 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:27:45,063 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:27:45,063 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:27:45,063 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:27:45,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:27:45,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:27:45,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:27:45,064 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:27:45,065 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:27:45,065 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:27:45,066 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:27:45,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:27:45,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:27:45,066 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:27:45,067 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:27:45,067 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:27:45,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:27:45,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:27:45,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:27:45,139 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:27:45,140 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:27:45,141 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-27 05:27:45,214 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/795774d29/484fb116682243969d8b15da6ac25f06/FLAGb1e2612b7 [2018-10-27 05:27:45,731 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:27:45,732 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-10-27 05:27:45,748 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/795774d29/484fb116682243969d8b15da6ac25f06/FLAGb1e2612b7 [2018-10-27 05:27:45,775 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/795774d29/484fb116682243969d8b15da6ac25f06 [2018-10-27 05:27:45,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:27:45,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:27:45,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:27:45,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:27:45,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:27:45,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:27:45" (1/1) ... [2018-10-27 05:27:45,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498cb451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:45, skipping insertion in model container [2018-10-27 05:27:45,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:27:45" (1/1) ... [2018-10-27 05:27:45,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:27:45,882 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:27:46,375 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:27:46,379 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:27:46,514 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:27:46,540 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:27:46,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46 WrapperNode [2018-10-27 05:27:46,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:27:46,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:27:46,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:27:46,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:27:46,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:27:46,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:27:46,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:27:46,765 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:27:46,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... [2018-10-27 05:27:46,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:27:46,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:27:46,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:27:46,880 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:27:46,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:27:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:27:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:27:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:27:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:27:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:27:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:27:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:27:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:27:50,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:27:50,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:27:50 BoogieIcfgContainer [2018-10-27 05:27:50,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:27:50,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:27:50,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:27:50,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:27:50,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:27:45" (1/3) ... [2018-10-27 05:27:50,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38209040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:27:50, skipping insertion in model container [2018-10-27 05:27:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:27:46" (2/3) ... [2018-10-27 05:27:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38209040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:27:50, skipping insertion in model container [2018-10-27 05:27:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:27:50" (3/3) ... [2018-10-27 05:27:50,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label22_false-unreach-call_false-termination.c [2018-10-27 05:27:50,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:27:50,467 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:27:50,485 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:27:50,524 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:27:50,524 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:27:50,524 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:27:50,524 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:27:50,524 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:27:50,525 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:27:50,525 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:27:50,525 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:27:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:27:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 05:27:50,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:50,559 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] [2018-10-27 05:27:50,561 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:50,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash -874290308, now seen corresponding path program 1 times [2018-10-27 05:27:50,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:50,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:50,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:50,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:50,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:27:50,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:27:50,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:27:50,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:50,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:27:50,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:27:50,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:27:50,999 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:27:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:52,788 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:27:52,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:27:52,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-27 05:27:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:52,813 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:27:52,813 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:27:52,821 INFO L605 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 [2018-10-27 05:27:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:27:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:27:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:27:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 05:27:52,907 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 20 [2018-10-27 05:27:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:52,908 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 05:27:52,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:27:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 05:27:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-27 05:27:52,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:52,916 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:27:52,916 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:52,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:52,919 INFO L82 PathProgramCache]: Analyzing trace with hash 473181535, now seen corresponding path program 1 times [2018-10-27 05:27:52,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:52,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:52,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:52,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:52,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:27:53,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:27:53,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:27:53,271 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:53,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:27:53,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:27:53,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:27:53,275 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 05:27:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:55,370 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 05:27:55,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:27:55,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-27 05:27:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:55,378 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 05:27:55,378 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 05:27:55,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:27:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 05:27:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 05:27:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 05:27:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 05:27:55,427 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 95 [2018-10-27 05:27:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:55,428 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 05:27:55,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:27:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 05:27:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-27 05:27:55,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:55,432 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:27:55,433 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:55,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:55,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1939267164, now seen corresponding path program 1 times [2018-10-27 05:27:55,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:55,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:55,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:55,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:55,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:27:55,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:27:55,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:27:55,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:55,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:27:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:27:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:27:55,669 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-27 05:27:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:59,547 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-10-27 05:27:59,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:27:59,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-27 05:27:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:59,570 INFO L225 Difference]: With dead ends: 2350 [2018-10-27 05:27:59,570 INFO L226 Difference]: Without dead ends: 1731 [2018-10-27 05:27:59,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:27:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-27 05:27:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-27 05:27:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-27 05:27:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-10-27 05:27:59,651 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 104 [2018-10-27 05:27:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:59,651 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-10-27 05:27:59,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:27:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-10-27 05:27:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 05:27:59,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:59,672 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:27:59,672 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:59,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1125198180, now seen corresponding path program 1 times [2018-10-27 05:27:59,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:59,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:59,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:59,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:59,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 05:27:59,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:27:59,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:27:59,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:59,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:27:59,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:27:59,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:27:59,984 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 3 states. [2018-10-27 05:28:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:01,897 INFO L93 Difference]: Finished difference Result 4928 states and 7680 transitions. [2018-10-27 05:28:01,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:28:01,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-10-27 05:28:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:01,937 INFO L225 Difference]: With dead ends: 4928 [2018-10-27 05:28:01,938 INFO L226 Difference]: Without dead ends: 3203 [2018-10-27 05:28:01,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:28:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2018-10-27 05:28:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3203. [2018-10-27 05:28:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2018-10-27 05:28:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4752 transitions. [2018-10-27 05:28:02,083 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4752 transitions. Word has length 214 [2018-10-27 05:28:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:02,084 INFO L481 AbstractCegarLoop]: Abstraction has 3203 states and 4752 transitions. [2018-10-27 05:28:02,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:28:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4752 transitions. [2018-10-27 05:28:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-27 05:28:02,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:02,097 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:28:02,097 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:02,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1192909764, now seen corresponding path program 1 times [2018-10-27 05:28:02,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:02,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:02,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:02,727 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-27 05:28:03,437 WARN L179 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-27 05:28:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:28:04,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:04,027 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:04,028 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-27 05:28:04,030 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:04,082 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:04,083 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:08,317 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:28:08,319 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:28:08,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:08,364 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:28:11,486 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 77.35% of their original sizes. [2018-10-27 05:28:11,486 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:28:11,655 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-10-27 05:28:11,656 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:28:11,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:28:11,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-10-27 05:28:11,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:11,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:28:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:28:11,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:28:11,659 INFO L87 Difference]: Start difference. First operand 3203 states and 4752 transitions. Second operand 6 states. [2018-10-27 05:28:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:35,640 INFO L93 Difference]: Finished difference Result 6585 states and 9782 transitions. [2018-10-27 05:28:35,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:28:35,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-27 05:28:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:35,661 INFO L225 Difference]: With dead ends: 6585 [2018-10-27 05:28:35,661 INFO L226 Difference]: Without dead ends: 3388 [2018-10-27 05:28:35,681 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:28:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-10-27 05:28:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2018-10-27 05:28:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2018-10-27 05:28:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4943 transitions. [2018-10-27 05:28:35,775 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4943 transitions. Word has length 226 [2018-10-27 05:28:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:35,775 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 4943 transitions. [2018-10-27 05:28:35,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:28:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4943 transitions. [2018-10-27 05:28:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-27 05:28:35,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:35,787 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:28:35,788 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:35,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1312706291, now seen corresponding path program 1 times [2018-10-27 05:28:35,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:35,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:35,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:36,256 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:36,466 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:36,918 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-27 05:28:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 127 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:28:37,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:37,370 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:37,370 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-27 05:28:37,371 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:37,377 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:37,377 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:42,929 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:42,929 INFO L272 AbstractInterpreter]: Visited 123 different actions 238 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:28:42,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:42,939 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:42,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:42,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:28:42,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:42,954 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:43,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:43,491 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:43,908 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 235 proven. 53 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 05:28:44,142 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:44,891 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 49 proven. 248 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:28:45,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:45,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-10-27 05:28:45,277 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:45,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 05:28:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 05:28:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:28:45,282 INFO L87 Difference]: Start difference. First operand 3386 states and 4943 transitions. Second operand 15 states. [2018-10-27 05:28:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:51,570 INFO L93 Difference]: Finished difference Result 7976 states and 11982 transitions. [2018-10-27 05:28:51,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 05:28:51,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2018-10-27 05:28:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:51,596 INFO L225 Difference]: With dead ends: 7976 [2018-10-27 05:28:51,596 INFO L226 Difference]: Without dead ends: 4580 [2018-10-27 05:28:51,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 630 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2018-10-27 05:28:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2018-10-27 05:28:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 4334. [2018-10-27 05:28:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4334 states. [2018-10-27 05:28:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5711 transitions. [2018-10-27 05:28:51,754 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5711 transitions. Word has length 311 [2018-10-27 05:28:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:51,754 INFO L481 AbstractCegarLoop]: Abstraction has 4334 states and 5711 transitions. [2018-10-27 05:28:51,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 05:28:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5711 transitions. [2018-10-27 05:28:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 05:28:51,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:51,765 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:51,765 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:51,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 535151199, now seen corresponding path program 1 times [2018-10-27 05:28:51,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:51,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:51,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:51,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:51,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:52,292 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:52,494 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:52,704 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:53,071 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:28:53,563 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-27 05:28:53,703 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-27 05:28:54,072 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-27 05:28:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 52 proven. 279 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:28:54,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:54,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:54,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 05:28:54,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:54,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:54,624 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:58,679 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:28:58,679 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:28:58,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:58,688 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:01,255 INFO L227 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 77.4% of their original sizes. [2018-10-27 05:29:01,256 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:01,803 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-27 05:29:01,804 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:01,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:01,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-10-27 05:29:01,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:01,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:29:01,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:29:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:29:01,805 INFO L87 Difference]: Start difference. First operand 4334 states and 5711 transitions. Second operand 10 states. [2018-10-27 05:29:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:31,601 INFO L93 Difference]: Finished difference Result 8667 states and 11437 transitions. [2018-10-27 05:29:31,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:29:31,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2018-10-27 05:29:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:31,627 INFO L225 Difference]: With dead ends: 8667 [2018-10-27 05:29:31,627 INFO L226 Difference]: Without dead ends: 4522 [2018-10-27 05:29:31,646 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 344 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:29:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2018-10-27 05:29:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4519. [2018-10-27 05:29:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4519 states. [2018-10-27 05:29:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5897 transitions. [2018-10-27 05:29:31,769 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5897 transitions. Word has length 337 [2018-10-27 05:29:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:31,770 INFO L481 AbstractCegarLoop]: Abstraction has 4519 states and 5897 transitions. [2018-10-27 05:29:31,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:29:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5897 transitions. [2018-10-27 05:29:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-10-27 05:29:31,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:31,790 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:29:31,790 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:31,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1895497741, now seen corresponding path program 1 times [2018-10-27 05:29:31,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:31,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:31,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:31,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:31,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-27 05:29:32,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:32,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:32,456 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 448 with the following transitions: [2018-10-27 05:29:32,456 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:32,463 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:32,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:41,565 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:29:41,565 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:29:41,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:41,571 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:29:42,830 INFO L227 lantSequenceWeakener]: Weakened 444 states. On average, predicates are now at 80.06% of their original sizes. [2018-10-27 05:29:42,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:29:43,030 INFO L415 sIntCurrentIteration]: We unified 446 AI predicates to 446 [2018-10-27 05:29:43,031 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:29:43,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:29:43,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:29:43,031 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:29:43,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:29:43,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:29:43,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:29:43,033 INFO L87 Difference]: Start difference. First operand 4519 states and 5897 transitions. Second operand 9 states. [2018-10-27 05:30:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:01,408 INFO L93 Difference]: Finished difference Result 10285 states and 13603 transitions. [2018-10-27 05:30:01,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:30:01,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 447 [2018-10-27 05:30:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:01,438 INFO L225 Difference]: With dead ends: 10285 [2018-10-27 05:30:01,438 INFO L226 Difference]: Without dead ends: 6140 [2018-10-27 05:30:01,454 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 453 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:30:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2018-10-27 05:30:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 6110. [2018-10-27 05:30:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2018-10-27 05:30:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7685 transitions. [2018-10-27 05:30:01,602 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7685 transitions. Word has length 447 [2018-10-27 05:30:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:01,603 INFO L481 AbstractCegarLoop]: Abstraction has 6110 states and 7685 transitions. [2018-10-27 05:30:01,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:30:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7685 transitions. [2018-10-27 05:30:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-27 05:30:01,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:01,627 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-27 05:30:01,627 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:01,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash 420910180, now seen corresponding path program 1 times [2018-10-27 05:30:01,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:01,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:01,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:01,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:01,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:02,743 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:30:03,081 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 05:30:03,495 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 05:30:03,924 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 05:30:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 286 proven. 285 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-27 05:30:04,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:04,622 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:04,622 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-10-27 05:30:04,623 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:04,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:04,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:10,400 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:10,400 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:30:10,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:10,407 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:10,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:10,407 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:30:10,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:10,416 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:10,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 539 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-27 05:30:10,998 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 284 proven. 92 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-10-27 05:30:11,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:11,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:30:11,602 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:11,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:30:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:30:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:30:11,605 INFO L87 Difference]: Start difference. First operand 6110 states and 7685 transitions. Second operand 17 states. [2018-10-27 05:30:13,360 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-10-27 05:30:15,438 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:30:15,833 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:30:17,399 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 05:30:18,666 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2018-10-27 05:30:19,882 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-10-27 05:30:20,230 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2018-10-27 05:30:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:22,174 INFO L93 Difference]: Finished difference Result 17383 states and 23002 transitions. [2018-10-27 05:30:22,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-27 05:30:22,175 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 514 [2018-10-27 05:30:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:22,224 INFO L225 Difference]: With dead ends: 17383 [2018-10-27 05:30:22,224 INFO L226 Difference]: Without dead ends: 11647 [2018-10-27 05:30:22,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 05:30:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11647 states. [2018-10-27 05:30:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11647 to 11201. [2018-10-27 05:30:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11201 states. [2018-10-27 05:30:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11201 states to 11201 states and 13654 transitions. [2018-10-27 05:30:22,491 INFO L78 Accepts]: Start accepts. Automaton has 11201 states and 13654 transitions. Word has length 514 [2018-10-27 05:30:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:22,492 INFO L481 AbstractCegarLoop]: Abstraction has 11201 states and 13654 transitions. [2018-10-27 05:30:22,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:30:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 11201 states and 13654 transitions. [2018-10-27 05:30:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-10-27 05:30:22,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:22,525 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-27 05:30:22,525 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:22,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:22,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1555364948, now seen corresponding path program 1 times [2018-10-27 05:30:22,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:22,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:22,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:22,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:22,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 422 proven. 481 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-10-27 05:30:24,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:24,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:24,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 625 with the following transitions: [2018-10-27 05:30:24,244 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [922], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:24,249 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:24,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:34,145 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:34,145 INFO L272 AbstractInterpreter]: Visited 189 different actions 757 times. Merged at 10 different actions 37 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:30:34,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:34,149 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:34,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:34,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:30:34,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:34,159 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:34,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-10-27 05:30:34,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-10-27 05:30:35,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:35,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-10-27 05:30:35,024 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:35,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:30:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:30:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:30:35,026 INFO L87 Difference]: Start difference. First operand 11201 states and 13654 transitions. Second operand 18 states. [2018-10-27 05:30:37,276 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-10-27 05:30:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:43,409 INFO L93 Difference]: Finished difference Result 22324 states and 28613 transitions. [2018-10-27 05:30:43,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-27 05:30:43,409 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 624 [2018-10-27 05:30:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:43,451 INFO L225 Difference]: With dead ends: 22324 [2018-10-27 05:30:43,452 INFO L226 Difference]: Without dead ends: 10651 [2018-10-27 05:30:43,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1339 GetRequests, 1272 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=854, Invalid=3568, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 05:30:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10651 states. [2018-10-27 05:30:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10651 to 9939. [2018-10-27 05:30:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9939 states. [2018-10-27 05:30:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9939 states to 9939 states and 11309 transitions. [2018-10-27 05:30:43,710 INFO L78 Accepts]: Start accepts. Automaton has 9939 states and 11309 transitions. Word has length 624 [2018-10-27 05:30:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:43,711 INFO L481 AbstractCegarLoop]: Abstraction has 9939 states and 11309 transitions. [2018-10-27 05:30:43,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:30:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9939 states and 11309 transitions. [2018-10-27 05:30:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-10-27 05:30:43,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:43,721 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-27 05:30:43,721 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:43,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:43,722 INFO L82 PathProgramCache]: Analyzing trace with hash 894638304, now seen corresponding path program 1 times [2018-10-27 05:30:43,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:43,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:43,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:43,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:43,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 423 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-10-27 05:30:44,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:44,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:44,561 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 633 with the following transitions: [2018-10-27 05:30:44,561 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:44,564 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:44,564 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:30:50,480 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:30:50,481 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:30:50,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:50,485 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:30:50,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:50,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:30:50,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:50,493 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:30:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:50,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:30:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 766 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2018-10-27 05:30:51,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:30:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 423 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-10-27 05:30:52,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:30:52,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:30:52,143 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:30:52,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:30:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:30:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:30:52,144 INFO L87 Difference]: Start difference. First operand 9939 states and 11309 transitions. Second operand 7 states. [2018-10-27 05:30:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:30:54,530 INFO L93 Difference]: Finished difference Result 26904 states and 34191 transitions. [2018-10-27 05:30:54,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 05:30:54,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2018-10-27 05:30:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:30:54,620 INFO L225 Difference]: With dead ends: 26904 [2018-10-27 05:30:54,620 INFO L226 Difference]: Without dead ends: 17339 [2018-10-27 05:30:54,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1267 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:30:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17339 states. [2018-10-27 05:30:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17339 to 16916. [2018-10-27 05:30:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16916 states. [2018-10-27 05:30:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16916 states to 16916 states and 19254 transitions. [2018-10-27 05:30:55,094 INFO L78 Accepts]: Start accepts. Automaton has 16916 states and 19254 transitions. Word has length 632 [2018-10-27 05:30:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:30:55,095 INFO L481 AbstractCegarLoop]: Abstraction has 16916 states and 19254 transitions. [2018-10-27 05:30:55,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:30:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16916 states and 19254 transitions. [2018-10-27 05:30:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-10-27 05:30:55,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:30:55,108 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:30:55,108 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:30:55,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:30:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1202378000, now seen corresponding path program 1 times [2018-10-27 05:30:55,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:30:55,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:55,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:30:55,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:30:55,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:30:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:30:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 604 proven. 92 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-10-27 05:30:55,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:30:55,907 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:30:55,907 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 793 with the following transitions: [2018-10-27 05:30:55,907 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:30:55,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:30:55,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:01,930 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:01,931 INFO L272 AbstractInterpreter]: Visited 193 different actions 776 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:31:01,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:01,935 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:01,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:01,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:01,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:01,944 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:02,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1035 proven. 2 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-27 05:31:02,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 604 proven. 92 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-10-27 05:31:03,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:03,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-10-27 05:31:03,235 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:03,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:31:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:31:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:31:03,238 INFO L87 Difference]: Start difference. First operand 16916 states and 19254 transitions. Second operand 6 states. [2018-10-27 05:31:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:06,897 INFO L93 Difference]: Finished difference Result 34600 states and 39568 transitions. [2018-10-27 05:31:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 05:31:06,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 792 [2018-10-27 05:31:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:06,935 INFO L225 Difference]: With dead ends: 34600 [2018-10-27 05:31:06,935 INFO L226 Difference]: Without dead ends: 18058 [2018-10-27 05:31:06,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1586 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-27 05:31:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18058 states. [2018-10-27 05:31:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18058 to 17708. [2018-10-27 05:31:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17708 states. [2018-10-27 05:31:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17708 states to 17708 states and 19911 transitions. [2018-10-27 05:31:07,292 INFO L78 Accepts]: Start accepts. Automaton has 17708 states and 19911 transitions. Word has length 792 [2018-10-27 05:31:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:07,293 INFO L481 AbstractCegarLoop]: Abstraction has 17708 states and 19911 transitions. [2018-10-27 05:31:07,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:31:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 17708 states and 19911 transitions. [2018-10-27 05:31:07,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-10-27 05:31:07,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:07,310 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:31:07,310 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:07,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:07,311 INFO L82 PathProgramCache]: Analyzing trace with hash -19507885, now seen corresponding path program 1 times [2018-10-27 05:31:07,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:07,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:07,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:07,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:07,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 478 proven. 1097 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2018-10-27 05:31:10,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:10,119 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:10,119 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 888 with the following transitions: [2018-10-27 05:31:10,120 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:10,123 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:10,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:31:15,875 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:31:15,875 INFO L272 AbstractInterpreter]: Visited 194 different actions 783 times. Merged at 11 different actions 43 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:31:15,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:15,880 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:31:15,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:15,880 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:15,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:15,889 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:16,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 1589 proven. 2 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-10-27 05:31:16,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:31:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 479 proven. 341 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2018-10-27 05:31:17,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:31:17,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-10-27 05:31:17,461 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:31:17,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:31:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:31:17,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:31:17,463 INFO L87 Difference]: Start difference. First operand 17708 states and 19911 transitions. Second operand 18 states. [2018-10-27 05:31:18,259 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2018-10-27 05:31:22,233 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-10-27 05:31:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:31:27,815 INFO L93 Difference]: Finished difference Result 36235 states and 40900 transitions. [2018-10-27 05:31:27,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 05:31:27,816 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 887 [2018-10-27 05:31:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:31:27,866 INFO L225 Difference]: With dead ends: 36235 [2018-10-27 05:31:27,867 INFO L226 Difference]: Without dead ends: 18901 [2018-10-27 05:31:27,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1864 GetRequests, 1801 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=850, Invalid=3310, Unknown=0, NotChecked=0, Total=4160 [2018-10-27 05:31:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18901 states. [2018-10-27 05:31:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18901 to 17933. [2018-10-27 05:31:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17933 states. [2018-10-27 05:31:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17933 states to 17933 states and 19727 transitions. [2018-10-27 05:31:28,243 INFO L78 Accepts]: Start accepts. Automaton has 17933 states and 19727 transitions. Word has length 887 [2018-10-27 05:31:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:31:28,243 INFO L481 AbstractCegarLoop]: Abstraction has 17933 states and 19727 transitions. [2018-10-27 05:31:28,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:31:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17933 states and 19727 transitions. [2018-10-27 05:31:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2018-10-27 05:31:28,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:28,261 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-10-27 05:31:28,262 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:28,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash 687223164, now seen corresponding path program 1 times [2018-10-27 05:31:28,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:28,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:28,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:28,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:28,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 694 proven. 986 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2018-10-27 05:31:30,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:30,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:31:30,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 967 with the following transitions: [2018-10-27 05:31:30,941 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [910], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:31:30,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:31:30,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 05:31:34,838 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 05:31:34,838 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 05:31:34,839 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:31:34,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:31:34,839 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:34,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:34,848 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:31:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:35,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:31:35,116 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 05:31:35,317 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:31:35,317 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:31:35,322 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:31:35,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:31:35 BoogieIcfgContainer [2018-10-27 05:31:35,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:31:35,324 INFO L168 Benchmark]: Toolchain (without parser) took 229535.98 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 683.7 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,325 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:31:35,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,327 INFO L168 Benchmark]: Boogie Preprocessor took 115.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,328 INFO L168 Benchmark]: RCFGBuilder took 3558.35 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: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,328 INFO L168 Benchmark]: TraceAbstraction took 224883.46 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 578.6 MB. Max. memory is 7.1 GB. [2018-10-27 05:31:35,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 751.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3558.35 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: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224883.46 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 578.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was analyzing trace of length 967 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.8s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 124.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1948 SDtfs, 28915 SDslu, 2837 SDs, 0 SdLazy, 29469 SolverSat, 5238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 8922 GetRequests, 8615 SyntacticMatches, 10 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4192 ImplicationChecksByTransitivity, 18.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17933occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 60.3s AbstIntTime, 10 AbstIntIterations, 3 AbstIntStrong, 0.9970989899435861 AbsIntWeakeningRatio, 0.09533267130089375 AbsIntAvgWeakeningVarsNumRemoved, 15.906653426017876 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 3189 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 8963 NumberOfCodeBlocks, 8963 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 12698 ConstructedInterpolants, 0 QuantifiedInterpolants, 36096134 SizeOfPredicates, 16 NumberOfNonLiveVariables, 5545 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 19090/22520 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown