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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:59:41,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:59:41,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:59:41,897 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:59:41,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:59:41,899 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:59:41,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:59:41,903 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:59:41,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:59:41,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:59:41,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:59:41,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:59:41,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:59:41,918 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:59:41,920 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:59:41,920 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:59:41,921 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:59:41,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:59:41,926 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:59:41,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:59:41,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:59:41,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:59:41,940 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:59:41,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:59:41,941 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:59:41,942 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:59:41,942 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:59:41,943 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:59:41,945 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:59:41,946 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:59:41,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:59:41,947 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 14:59:41,951 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:59:41,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:59:41,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:59:41,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:59:41,975 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:59:41,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:59:41,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:59:41,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:59:41,976 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:59:41,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:59:41,977 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:59:41,977 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:59:41,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:59:41,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:59:41,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:59:41,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:59:41,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:59:41,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:59:41,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:59:41,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:59:41,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:59:41,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:59:41,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:59:41,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:59:41,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:59:41,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:59:41,982 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:59:41,982 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:59:41,982 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:59:41,983 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:59:41,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:59:41,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:59:41,983 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:59:41,984 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:59:41,984 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:59:42,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:59:42,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:59:42,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:59:42,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:59:42,059 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:59:42,060 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-27 14:59:42,131 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8546ab67f/f9a5b27d63d2400db6318ad3295b57cf/FLAG610f7fce1 [2018-10-27 14:59:42,844 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:59:42,845 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label39_true-unreach-call.c [2018-10-27 14:59:42,868 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8546ab67f/f9a5b27d63d2400db6318ad3295b57cf/FLAG610f7fce1 [2018-10-27 14:59:42,886 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8546ab67f/f9a5b27d63d2400db6318ad3295b57cf [2018-10-27 14:59:42,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:59:42,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:59:42,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:59:42,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:59:42,907 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:59:42,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:42" (1/1) ... [2018-10-27 14:59:42,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96182d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:42, skipping insertion in model container [2018-10-27 14:59:42,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:42" (1/1) ... [2018-10-27 14:59:42,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:59:43,053 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:59:44,019 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:59:44,023 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:59:44,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:59:44,465 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:59:44,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44 WrapperNode [2018-10-27 14:59:44,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:59:44,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:59:44,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:59:44,467 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:59:44,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:44,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:59:45,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:59:45,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:59:45,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:59:45,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (1/1) ... [2018-10-27 14:59:45,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:59:45,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:59:45,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:59:45,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:59:45,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (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 14:59:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:59:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:59:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:59:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:59:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:59:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:59:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:59:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:59:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:59:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:00:01,346 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:00:01,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:00:01 BoogieIcfgContainer [2018-10-27 15:00:01,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:00:01,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:00:01,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:00:01,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:00:01,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:42" (1/3) ... [2018-10-27 15:00:01,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7452b7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:00:01, skipping insertion in model container [2018-10-27 15:00:01,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:44" (2/3) ... [2018-10-27 15:00:01,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7452b7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:00:01, skipping insertion in model container [2018-10-27 15:00:01,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:00:01" (3/3) ... [2018-10-27 15:00:01,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label39_true-unreach-call.c [2018-10-27 15:00:01,367 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:00:01,377 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:00:01,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:00:01,439 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:00:01,439 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:00:01,439 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:00:01,440 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:00:01,440 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:00:01,440 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:00:01,440 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:00:01,440 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:00:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 15:00:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 15:00:01,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:01,490 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:01,493 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:01,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:01,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1351765020, now seen corresponding path program 1 times [2018-10-27 15:00:01,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:01,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:01,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:01,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:01,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:02,070 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 15:00:02,102 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 15:00:02,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:00:02,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:00:02,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:02,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:00:02,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:00:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:00:02,131 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 15:00:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:12,976 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-10-27 15:00:12,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:00:12,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-10-27 15:00:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:13,011 INFO L225 Difference]: With dead ends: 2125 [2018-10-27 15:00:13,011 INFO L226 Difference]: Without dead ends: 1515 [2018-10-27 15:00:13,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:00:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-10-27 15:00:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-10-27 15:00:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-10-27 15:00:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-10-27 15:00:13,170 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 70 [2018-10-27 15:00:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:13,171 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-10-27 15:00:13,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:00:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-10-27 15:00:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 15:00:13,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:13,181 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:00:13,182 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:13,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -118036814, now seen corresponding path program 1 times [2018-10-27 15:00:13,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:13,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:13,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:13,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:13,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:13,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:00:13,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:00:13,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:13,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:00:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:00:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:00:13,516 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-10-27 15:00:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:00:25,554 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-10-27 15:00:25,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:00:25,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2018-10-27 15:00:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:00:25,581 INFO L225 Difference]: With dead ends: 3017 [2018-10-27 15:00:25,581 INFO L226 Difference]: Without dead ends: 1980 [2018-10-27 15:00:25,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:00:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-27 15:00:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-10-27 15:00:25,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-10-27 15:00:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-10-27 15:00:25,672 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 142 [2018-10-27 15:00:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:00:25,673 INFO L481 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-10-27 15:00:25,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:00:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-10-27 15:00:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 15:00:25,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:00:25,677 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, 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 15:00:25,677 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:00:25,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:25,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1553613114, now seen corresponding path program 1 times [2018-10-27 15:00:25,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:00:25,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:25,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:25,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:00:25,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:00:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:25,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:25,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:00:25,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-10-27 15:00:25,998 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1170], [1172], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:00:26,046 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:00:26,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:00:26,440 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:00:28,977 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:00:28,980 INFO L272 AbstractInterpreter]: Visited 83 different actions 467 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:00:29,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:00:29,025 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:00:29,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:00:29,025 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 15:00:29,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:00:29,040 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:00:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:00:29,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:00:37,763 WARN L179 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-27 15:00:42,196 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-10-27 15:00:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:42,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:00:44,965 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 39 DAG size of output: 13 [2018-10-27 15:00:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:47,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 15:00:47,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 15:00:47,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:47,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:00:47,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:00:47,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=163, Unknown=2, NotChecked=0, Total=210 [2018-10-27 15:00:47,690 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 6 states. [2018-10-27 15:01:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:13,588 INFO L93 Difference]: Finished difference Result 7507 states and 11486 transitions. [2018-10-27 15:01:13,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 15:01:13,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 15:01:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:13,624 INFO L225 Difference]: With dead ends: 7507 [2018-10-27 15:01:13,624 INFO L226 Difference]: Without dead ends: 5559 [2018-10-27 15:01:13,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=45, Invalid=163, Unknown=2, NotChecked=0, Total=210 [2018-10-27 15:01:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2018-10-27 15:01:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5551. [2018-10-27 15:01:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2018-10-27 15:01:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 8147 transitions. [2018-10-27 15:01:13,798 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 8147 transitions. Word has length 145 [2018-10-27 15:01:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:13,798 INFO L481 AbstractCegarLoop]: Abstraction has 5551 states and 8147 transitions. [2018-10-27 15:01:13,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:01:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 8147 transitions. [2018-10-27 15:01:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-27 15:01:13,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:13,802 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, 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] [2018-10-27 15:01:13,803 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:13,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1899074210, now seen corresponding path program 1 times [2018-10-27 15:01:13,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:13,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:13,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:13,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:13,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:14,063 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:01:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:14,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:01:14,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:01:14,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:01:14,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:01:14,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:01:14,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:01:14,121 INFO L87 Difference]: Start difference. First operand 5551 states and 8147 transitions. Second operand 6 states. [2018-10-27 15:01:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:22,728 INFO L93 Difference]: Finished difference Result 13416 states and 20027 transitions. [2018-10-27 15:01:22,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:01:22,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-10-27 15:01:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:22,925 INFO L225 Difference]: With dead ends: 13416 [2018-10-27 15:01:22,925 INFO L226 Difference]: Without dead ends: 7871 [2018-10-27 15:01:22,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:01:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2018-10-27 15:01:23,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7806. [2018-10-27 15:01:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7806 states. [2018-10-27 15:01:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7806 states to 7806 states and 10098 transitions. [2018-10-27 15:01:23,155 INFO L78 Accepts]: Start accepts. Automaton has 7806 states and 10098 transitions. Word has length 150 [2018-10-27 15:01:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:23,156 INFO L481 AbstractCegarLoop]: Abstraction has 7806 states and 10098 transitions. [2018-10-27 15:01:23,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:01:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7806 states and 10098 transitions. [2018-10-27 15:01:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 15:01:23,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:23,159 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, 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 15:01:23,160 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:23,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:23,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1230054638, now seen corresponding path program 1 times [2018-10-27 15:01:23,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:23,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:23,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:23,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:23,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:23,441 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:01:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:23,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:01:23,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:01:23,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2018-10-27 15:01:23,584 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1170], [1172], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:01:23,590 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:01:23,590 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:01:23,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:01:24,318 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:01:24,318 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:01:24,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:24,339 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:01:24,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:01:24,340 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 15:01:24,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:24,352 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:01:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:24,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:01:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:24,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:01:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:24,700 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:01:24,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 15:01:24,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:01:24,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:01:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:01:24,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:01:24,702 INFO L87 Difference]: Start difference. First operand 7806 states and 10098 transitions. Second operand 3 states. [2018-10-27 15:01:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:29,453 INFO L93 Difference]: Finished difference Result 16045 states and 20827 transitions. [2018-10-27 15:01:29,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:01:29,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2018-10-27 15:01:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:29,491 INFO L225 Difference]: With dead ends: 16045 [2018-10-27 15:01:29,492 INFO L226 Difference]: Without dead ends: 8245 [2018-10-27 15:01:29,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 315 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:01:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2018-10-27 15:01:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 8245. [2018-10-27 15:01:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8245 states. [2018-10-27 15:01:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 10210 transitions. [2018-10-27 15:01:29,731 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 10210 transitions. Word has length 158 [2018-10-27 15:01:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:29,731 INFO L481 AbstractCegarLoop]: Abstraction has 8245 states and 10210 transitions. [2018-10-27 15:01:29,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:01:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 10210 transitions. [2018-10-27 15:01:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-27 15:01:29,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:29,738 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:01:29,739 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:29,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2112454952, now seen corresponding path program 1 times [2018-10-27 15:01:29,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:29,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:29,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:29,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:29,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 15:01:30,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:01:30,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:01:30,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:01:30,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:01:30,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:01:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:01:30,009 INFO L87 Difference]: Start difference. First operand 8245 states and 10210 transitions. Second operand 3 states. [2018-10-27 15:01:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:35,318 INFO L93 Difference]: Finished difference Result 20882 states and 26345 transitions. [2018-10-27 15:01:35,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:01:35,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-10-27 15:01:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:35,380 INFO L225 Difference]: With dead ends: 20882 [2018-10-27 15:01:35,381 INFO L226 Difference]: Without dead ends: 12643 [2018-10-27 15:01:35,401 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 15:01:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12643 states. [2018-10-27 15:01:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12643 to 12643. [2018-10-27 15:01:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12643 states. [2018-10-27 15:01:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12643 states to 12643 states and 15106 transitions. [2018-10-27 15:01:35,634 INFO L78 Accepts]: Start accepts. Automaton has 12643 states and 15106 transitions. Word has length 234 [2018-10-27 15:01:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:35,636 INFO L481 AbstractCegarLoop]: Abstraction has 12643 states and 15106 transitions. [2018-10-27 15:01:35,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:01:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12643 states and 15106 transitions. [2018-10-27 15:01:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-27 15:01:35,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:35,642 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:01:35,642 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:35,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1918173257, now seen corresponding path program 1 times [2018-10-27 15:01:35,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:35,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:35,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:35,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:35,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 15:01:35,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:01:35,964 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:01:35,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-10-27 15:01:35,965 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1170], [1172], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1286], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:01:35,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:01:35,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:01:36,037 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:01:36,771 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:01:36,771 INFO L272 AbstractInterpreter]: Visited 98 different actions 382 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 15:01:36,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:36,808 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:01:36,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:01:36,808 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 15:01:36,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:36,821 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:01:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:36,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:01:37,277 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 15:01:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 15:01:37,706 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:01:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:38,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:01:38,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-27 15:01:38,891 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:01:38,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 15:01:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 15:01:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-27 15:01:38,893 INFO L87 Difference]: Start difference. First operand 12643 states and 15106 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 15:03:59,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 15:03:59,956 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:03:59,962 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:03:59,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:03:59 BoogieIcfgContainer [2018-10-27 15:03:59,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:03:59,964 INFO L168 Benchmark]: Toolchain (without parser) took 257065.23 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -297.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,965 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 15:03:59,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1565.74 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -938.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,967 INFO L168 Benchmark]: Boogie Preprocessor took 307.46 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,968 INFO L168 Benchmark]: RCFGBuilder took 16035.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.4 MB). Peak memory consumption was 480.4 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,969 INFO L168 Benchmark]: TraceAbstraction took 238614.31 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 650.1 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -6.4 MB). Peak memory consumption was 643.7 MB. Max. memory is 7.1 GB. [2018-10-27 15:03:59,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1565.74 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -938.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.46 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16035.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.4 MB). Peak memory consumption was 480.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238614.31 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 650.1 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -6.4 MB). Peak memory consumption was 643.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 197). Cancelled while BasicCegarLoop was constructing difference of abstraction (12643states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (14580 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 238.5s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 209.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2614 SDtfs, 11714 SDslu, 1845 SDs, 0 SdLazy, 21739 SolverSat, 5317 SolverUnsat, 67 SolverUnknown, 0 SolverNotchecked, 200.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1162 GetRequests, 1097 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12643occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.6s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 571 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 1696 NumberOfCodeBlocks, 1696 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2233 ConstructedInterpolants, 237 QuantifiedInterpolants, 2338478 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1050 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 1133/1348 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown