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/Problem15_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:10:21,831 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:10:21,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:10:21,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:10:21,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:10:21,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:10:21,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:10:21,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:10:21,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:10:21,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:10:21,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:10:21,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:10:21,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:10:21,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:10:21,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:10:21,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:10:21,872 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:10:21,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:10:21,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:10:21,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:10:21,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:10:21,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:10:21,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:10:21,884 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:10:21,884 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:10:21,885 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:10:21,886 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:10:21,887 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:10:21,888 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:10:21,888 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:10:21,889 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:10:21,889 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:10:21,889 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:10:21,890 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:10:21,891 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:10:21,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:10:21,892 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 08:10:21,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:10:21,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:10:21,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:10:21,907 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:10:21,907 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:10:21,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:10:21,908 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:10:21,908 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:10:21,908 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:10:21,908 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:10:21,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:10:21,909 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:10:21,909 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:10:21,909 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:10:21,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:10:21,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:10:21,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:10:21,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:10:21,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:10:21,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:10:21,911 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:10:21,911 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:10:21,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:10:21,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:10:21,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:10:21,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:10:21,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:10:21,912 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:10:21,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:10:21,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:10:21,913 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:10:21,913 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:10:21,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:10:21,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:10:21,914 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:10:21,914 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:10:21,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:10:21,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:10:21,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:10:22,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:10:22,001 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:10:22,002 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-27 08:10:22,081 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df53352b/38d4044abdb44eeb95ce6a38c6dbff13/FLAGe68fab42f [2018-10-27 08:10:22,750 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:10:22,751 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-27 08:10:22,773 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df53352b/38d4044abdb44eeb95ce6a38c6dbff13/FLAGe68fab42f [2018-10-27 08:10:22,794 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df53352b/38d4044abdb44eeb95ce6a38c6dbff13 [2018-10-27 08:10:22,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:10:22,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:10:22,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:10:22,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:10:22,818 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:10:22,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:22" (1/1) ... [2018-10-27 08:10:22,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2563410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:22, skipping insertion in model container [2018-10-27 08:10:22,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:10:22" (1/1) ... [2018-10-27 08:10:22,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:10:22,941 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:10:23,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:10:23,780 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:10:24,050 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:10:24,071 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:10:24,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24 WrapperNode [2018-10-27 08:10:24,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:10:24,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:10:24,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:10:24,073 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:10:24,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:10:24,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:10:24,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:10:24,464 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:10:24,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (1/1) ... [2018-10-27 08:10:24,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:10:24,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:10:24,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:10:24,641 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:10:24,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (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 08:10:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:10:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:10:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:10:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:10:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:10:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:10:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:10:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:10:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:10:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:10:34,840 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:10:34,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:34 BoogieIcfgContainer [2018-10-27 08:10:34,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:10:34,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:10:34,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:10:34,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:10:34,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:10:22" (1/3) ... [2018-10-27 08:10:34,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d2808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:34, skipping insertion in model container [2018-10-27 08:10:34,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:10:24" (2/3) ... [2018-10-27 08:10:34,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d2808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:10:34, skipping insertion in model container [2018-10-27 08:10:34,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:10:34" (3/3) ... [2018-10-27 08:10:34,850 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-10-27 08:10:34,860 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:10:34,870 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:10:34,892 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:10:34,946 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:10:34,946 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:10:34,947 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:10:34,947 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:10:34,947 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:10:34,947 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:10:34,947 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:10:34,948 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:10:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:10:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 08:10:34,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:34,996 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:34,998 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:35,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:35,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1945844012, now seen corresponding path program 1 times [2018-10-27 08:10:35,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:35,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:35,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:35,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:35,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:35,567 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 08:10:35,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:10:35,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:10:35,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:35,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:10:35,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:10:35,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:10:35,599 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-27 08:10:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:44,619 INFO L93 Difference]: Finished difference Result 1192 states and 2147 transitions. [2018-10-27 08:10:44,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:10:44,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 08:10:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:44,644 INFO L225 Difference]: With dead ends: 1192 [2018-10-27 08:10:44,645 INFO L226 Difference]: Without dead ends: 752 [2018-10-27 08:10:44,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:10:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2018-10-27 08:10:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2018-10-27 08:10:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-10-27 08:10:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1322 transitions. [2018-10-27 08:10:44,759 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1322 transitions. Word has length 66 [2018-10-27 08:10:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:44,760 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1322 transitions. [2018-10-27 08:10:44,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:10:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1322 transitions. [2018-10-27 08:10:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 08:10:44,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:44,774 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:10:44,775 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:44,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:44,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1570917914, now seen corresponding path program 1 times [2018-10-27 08:10:44,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:44,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:44,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:44,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:44,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:10:45,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:45,227 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:45,228 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-10-27 08:10:45,230 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:45,290 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:45,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:45,701 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:10:45,706 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:10:45,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:45,753 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:10:46,135 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 78.81% of their original sizes. [2018-10-27 08:10:46,136 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:10:46,389 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-10-27 08:10:46,389 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:10:46,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:10:46,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:10:46,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:46,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:10:46,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:10:46,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:10:46,393 INFO L87 Difference]: Start difference. First operand 752 states and 1322 transitions. Second operand 6 states. [2018-10-27 08:12:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:07,101 INFO L93 Difference]: Finished difference Result 1808 states and 3199 transitions. [2018-10-27 08:12:07,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:12:07,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-27 08:12:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:07,109 INFO L225 Difference]: With dead ends: 1808 [2018-10-27 08:12:07,109 INFO L226 Difference]: Without dead ends: 1062 [2018-10-27 08:12:07,113 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 147 GetRequests, 142 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 08:12:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2018-10-27 08:12:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2018-10-27 08:12:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2018-10-27 08:12:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1637 transitions. [2018-10-27 08:12:07,160 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1637 transitions. Word has length 147 [2018-10-27 08:12:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:07,161 INFO L481 AbstractCegarLoop]: Abstraction has 1060 states and 1637 transitions. [2018-10-27 08:12:07,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:12:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1637 transitions. [2018-10-27 08:12:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-27 08:12:07,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:07,172 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 08:12:07,172 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:07,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash -461112399, now seen corresponding path program 1 times [2018-10-27 08:12:07,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:07,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:07,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:07,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:07,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:08,192 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-10-27 08:12:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 56 proven. 136 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 08:12:08,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:08,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:08,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-27 08:12:08,461 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:12:08,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:08,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:08,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:12:08,661 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:12:08,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:08,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:12:09,097 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 84.36% of their original sizes. [2018-10-27 08:12:09,097 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:12:09,225 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-10-27 08:12:09,226 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:12:09,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:12:09,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2018-10-27 08:12:09,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:09,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:12:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:12:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:12:09,228 INFO L87 Difference]: Start difference. First operand 1060 states and 1637 transitions. Second operand 9 states. [2018-10-27 08:12:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:37,365 INFO L93 Difference]: Finished difference Result 2132 states and 3531 transitions. [2018-10-27 08:12:37,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:12:37,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-10-27 08:12:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:37,373 INFO L225 Difference]: With dead ends: 2132 [2018-10-27 08:12:37,373 INFO L226 Difference]: Without dead ends: 1386 [2018-10-27 08:12:37,376 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:12:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-27 08:12:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1383. [2018-10-27 08:12:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2018-10-27 08:12:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1987 transitions. [2018-10-27 08:12:37,415 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1987 transitions. Word has length 243 [2018-10-27 08:12:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:37,416 INFO L481 AbstractCegarLoop]: Abstraction has 1383 states and 1987 transitions. [2018-10-27 08:12:37,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:12:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1987 transitions. [2018-10-27 08:12:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-27 08:12:37,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:37,425 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:37,426 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:37,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1096078124, now seen corresponding path program 1 times [2018-10-27 08:12:37,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:37,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:37,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:37,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:37,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 9 proven. 112 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 08:12:38,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:38,054 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:38,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 423 with the following transitions: [2018-10-27 08:12:38,056 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:12:38,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:38,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:38,498 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:12:38,499 INFO L272 AbstractInterpreter]: Visited 284 different actions 846 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:12:38,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:38,508 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:12:38,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:38,508 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 08:12:38,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:38,518 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:12:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:38,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:12:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:39,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:12:39,586 WARN L179 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-27 08:12:39,749 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 08:12:40,048 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-27 08:12:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:40,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:12:40,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 08:12:40,511 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:12:40,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:12:40,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:12:40,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:12:40,514 INFO L87 Difference]: Start difference. First operand 1383 states and 1987 transitions. Second operand 10 states. [2018-10-27 08:13:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:13,308 INFO L93 Difference]: Finished difference Result 7629 states and 13882 transitions. [2018-10-27 08:13:13,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-27 08:13:13,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 422 [2018-10-27 08:13:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:13,367 INFO L225 Difference]: With dead ends: 7629 [2018-10-27 08:13:13,368 INFO L226 Difference]: Without dead ends: 6883 [2018-10-27 08:13:13,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 863 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=614, Invalid=2142, Unknown=0, NotChecked=0, Total=2756 [2018-10-27 08:13:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6883 states. [2018-10-27 08:13:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6883 to 6786. [2018-10-27 08:13:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6786 states. [2018-10-27 08:13:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6786 states to 6786 states and 10762 transitions. [2018-10-27 08:13:13,646 INFO L78 Accepts]: Start accepts. Automaton has 6786 states and 10762 transitions. Word has length 422 [2018-10-27 08:13:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:13,647 INFO L481 AbstractCegarLoop]: Abstraction has 6786 states and 10762 transitions. [2018-10-27 08:13:13,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:13:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6786 states and 10762 transitions. [2018-10-27 08:13:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-27 08:13:13,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:13,662 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:13,663 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:13,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1406128765, now seen corresponding path program 1 times [2018-10-27 08:13:13,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:13,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:13,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:13,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:13,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:14,189 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:13:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 119 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-27 08:13:14,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:14,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:14,638 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-10-27 08:13:14,639 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:13:14,649 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:14,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:15,274 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:13:15,275 INFO L272 AbstractInterpreter]: Visited 283 different actions 836 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:13:15,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:15,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:13:15,742 INFO L227 lantSequenceWeakener]: Weakened 455 states. On average, predicates are now at 80.46% of their original sizes. [2018-10-27 08:13:15,743 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:13:16,323 INFO L415 sIntCurrentIteration]: We unified 457 AI predicates to 457 [2018-10-27 08:13:16,323 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:13:16,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:13:16,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-10-27 08:13:16,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:16,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:13:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:13:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:13:16,326 INFO L87 Difference]: Start difference. First operand 6786 states and 10762 transitions. Second operand 10 states. [2018-10-27 08:14:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:13,376 INFO L93 Difference]: Finished difference Result 14186 states and 23071 transitions. [2018-10-27 08:14:13,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:14:13,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 458 [2018-10-27 08:14:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:13,416 INFO L225 Difference]: With dead ends: 14186 [2018-10-27 08:14:13,416 INFO L226 Difference]: Without dead ends: 8037 [2018-10-27 08:14:13,441 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 466 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:14:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2018-10-27 08:14:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8031. [2018-10-27 08:14:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8031 states. [2018-10-27 08:14:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 12196 transitions. [2018-10-27 08:14:13,651 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 12196 transitions. Word has length 458 [2018-10-27 08:14:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:13,653 INFO L481 AbstractCegarLoop]: Abstraction has 8031 states and 12196 transitions. [2018-10-27 08:14:13,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:14:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 12196 transitions. [2018-10-27 08:14:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-10-27 08:14:13,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:13,673 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:14:13,674 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:13,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash 240308005, now seen corresponding path program 1 times [2018-10-27 08:14:13,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:13,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:13,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:14:14,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:14,548 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:14:14,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-10-27 08:14:14,549 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [699], [704], [706], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:14:14,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:14:14,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:14:15,156 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:14:15,157 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:14:15,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:15,164 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:14:15,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:15,164 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 08:14:15,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:15,172 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:14:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:15,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:14:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:14:15,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:14:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:14:16,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:14:16,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-27 08:14:16,316 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:14:16,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 08:14:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 08:14:16,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:14:16,318 INFO L87 Difference]: Start difference. First operand 8031 states and 12196 transitions. Second operand 8 states. Received shutdown request... [2018-10-27 08:14:19,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 08:14:19,752 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:14:19,759 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:14:19,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:14:19 BoogieIcfgContainer [2018-10-27 08:14:19,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:14:19,760 INFO L168 Benchmark]: Toolchain (without parser) took 236952.74 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -600.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,762 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:14:19,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1262.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 390.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,764 INFO L168 Benchmark]: Boogie Preprocessor took 176.70 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,764 INFO L168 Benchmark]: RCFGBuilder took 10200.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 326.4 MB). Peak memory consumption was 326.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,765 INFO L168 Benchmark]: TraceAbstraction took 224917.63 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -174.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 08:14:19,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1262.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 390.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.70 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10200.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 326.4 MB). Peak memory consumption was 326.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224917.63 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -174.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (8031states) and FLOYD_HOARE automaton (currently 11 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (3272 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 224.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 211.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1988 SDtfs, 13137 SDslu, 2066 SDs, 0 SdLazy, 19009 SolverSat, 4388 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 165.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2727 GetRequests, 2619 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8031occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9976730561604809 AbsIntWeakeningRatio, 0.08520710059171598 AbsIntAvgWeakeningVarsNumRemoved, 15.550295857988166 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 108 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 2684 NumberOfCodeBlocks, 2684 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3559 ConstructedInterpolants, 0 QuantifiedInterpolants, 5173573 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1281 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 2168/2491 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown