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/Problem03_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:43,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:43,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:43,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:43,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:43,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:43,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:43,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:43,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:43,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:43,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:43,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:43,995 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:43,996 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:43,997 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:43,998 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:43,998 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:44,000 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:44,002 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:44,004 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:44,005 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:44,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:44,012 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:41:44,012 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:41:44,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:41:44,017 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:41:44,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:41:44,022 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:41:44,023 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:41:44,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:41:44,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:41:44,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:41:44,033 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 [2018-10-24 22:41:44,062 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:44,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:44,065 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:44,066 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:44,066 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:44,066 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:44,066 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:44,066 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:44,067 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:44,067 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:44,067 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:44,067 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:44,067 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:44,068 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:44,068 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:44,069 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:44,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:44,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:44,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:44,070 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:44,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:44,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:44,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:44,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:44,071 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:44,072 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:44,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:44,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:44,073 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:44,074 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:44,074 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:44,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:44,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:44,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:44,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:44,168 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:44,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-10-24 22:41:44,240 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16167b235/af6f5f03cda149a2b36b5bef8f669d2d/FLAGce790caf1 [2018-10-24 22:41:44,962 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:44,963 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-10-24 22:41:44,991 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16167b235/af6f5f03cda149a2b36b5bef8f669d2d/FLAGce790caf1 [2018-10-24 22:41:45,011 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16167b235/af6f5f03cda149a2b36b5bef8f669d2d [2018-10-24 22:41:45,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:45,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:45,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:45,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:45,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:45,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:45" (1/1) ... [2018-10-24 22:41:45,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:45, skipping insertion in model container [2018-10-24 22:41:45,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:45" (1/1) ... [2018-10-24 22:41:45,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:45,133 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:45,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:45,886 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:46,183 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:46,207 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:46,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46 WrapperNode [2018-10-24 22:41:46,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:46,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:46,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:46,210 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:46,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:46,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:46,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:46,540 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:46,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... [2018-10-24 22:41:46,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:46,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:46,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:46,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:46,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:51,562 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:51,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:51 BoogieIcfgContainer [2018-10-24 22:41:51,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:51,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:51,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:51,569 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:51,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:45" (1/3) ... [2018-10-24 22:41:51,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:51, skipping insertion in model container [2018-10-24 22:41:51,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:46" (2/3) ... [2018-10-24 22:41:51,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:51, skipping insertion in model container [2018-10-24 22:41:51,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:51" (3/3) ... [2018-10-24 22:41:51,573 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label37_false-unreach-call.c [2018-10-24 22:41:51,584 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:51,593 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:51,611 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:51,652 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:51,652 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:51,653 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:51,653 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:51,653 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:51,653 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:51,653 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:51,653 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 22:41:51,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:51,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:51,705 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:51,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash 182730809, now seen corresponding path program 1 times [2018-10-24 22:41:51,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:51,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:51,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:52,624 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:41:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:52,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:52,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:52,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:52,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:52,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:52,854 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 22:41:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:54,780 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-10-24 22:41:54,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:54,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-24 22:41:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:54,806 INFO L225 Difference]: With dead ends: 845 [2018-10-24 22:41:54,806 INFO L226 Difference]: Without dead ends: 531 [2018-10-24 22:41:54,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-24 22:41:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-10-24 22:41:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-24 22:41:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-10-24 22:41:54,910 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 156 [2018-10-24 22:41:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:54,912 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-10-24 22:41:54,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-10-24 22:41:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 22:41:54,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:54,926 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 22:41:54,926 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:54,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2037660448, now seen corresponding path program 1 times [2018-10-24 22:41:54,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:54,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:54,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:54,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:54,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:55,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:55,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:55,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:55,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:55,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:55,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:55,262 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-10-24 22:41:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:59,372 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-10-24 22:41:59,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:59,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-10-24 22:41:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:59,384 INFO L225 Difference]: With dead ends: 1599 [2018-10-24 22:41:59,384 INFO L226 Difference]: Without dead ends: 1075 [2018-10-24 22:41:59,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-10-24 22:41:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-10-24 22:41:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-10-24 22:41:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-10-24 22:41:59,472 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 166 [2018-10-24 22:41:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:59,472 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-10-24 22:41:59,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-10-24 22:41:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 22:41:59,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:59,478 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 22:41:59,478 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:59,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1179442109, now seen corresponding path program 1 times [2018-10-24 22:41:59,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:59,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:59,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:59,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:59,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:59,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:59,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:59,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:59,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:59,810 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-10-24 22:42:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:02,697 INFO L93 Difference]: Finished difference Result 2929 states and 4967 transitions. [2018-10-24 22:42:02,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:42:02,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-24 22:42:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:02,711 INFO L225 Difference]: With dead ends: 2929 [2018-10-24 22:42:02,712 INFO L226 Difference]: Without dead ends: 1901 [2018-10-24 22:42:02,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2018-10-24 22:42:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1879. [2018-10-24 22:42:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2018-10-24 22:42:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 3071 transitions. [2018-10-24 22:42:02,772 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 3071 transitions. Word has length 169 [2018-10-24 22:42:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:02,773 INFO L481 AbstractCegarLoop]: Abstraction has 1879 states and 3071 transitions. [2018-10-24 22:42:02,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:42:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 3071 transitions. [2018-10-24 22:42:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 22:42:02,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:02,783 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 22:42:02,783 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:02,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 71402321, now seen corresponding path program 1 times [2018-10-24 22:42:02,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:02,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:02,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:02,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:02,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:03,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:03,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 22:42:03,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:03,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:42:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:42:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:42:03,101 INFO L87 Difference]: Start difference. First operand 1879 states and 3071 transitions. Second operand 7 states. [2018-10-24 22:42:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:05,546 INFO L93 Difference]: Finished difference Result 5724 states and 10172 transitions. [2018-10-24 22:42:05,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:42:05,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2018-10-24 22:42:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:05,581 INFO L225 Difference]: With dead ends: 5724 [2018-10-24 22:42:05,581 INFO L226 Difference]: Without dead ends: 3851 [2018-10-24 22:42:05,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:42:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2018-10-24 22:42:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3742. [2018-10-24 22:42:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2018-10-24 22:42:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6337 transitions. [2018-10-24 22:42:05,758 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6337 transitions. Word has length 175 [2018-10-24 22:42:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:05,759 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 6337 transitions. [2018-10-24 22:42:05,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:42:05,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6337 transitions. [2018-10-24 22:42:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 22:42:05,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:05,772 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:42:05,772 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:05,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash -602294345, now seen corresponding path program 1 times [2018-10-24 22:42:05,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:05,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:05,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:05,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:05,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:06,107 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:42:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:42:06,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:06,186 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:06,187 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 22:42:06,189 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:06,253 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:06,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:07,402 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:07,404 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:42:07,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:07,450 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:08,461 INFO L232 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 70.26% of their original sizes. [2018-10-24 22:42:08,462 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:42:09,201 INFO L413 sIntCurrentIteration]: We have 183 unified AI predicates [2018-10-24 22:42:09,201 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:42:09,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:09,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 22:42:09,202 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:09,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 22:42:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 22:42:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:42:09,204 INFO L87 Difference]: Start difference. First operand 3742 states and 6337 transitions. Second operand 18 states. [2018-10-24 22:43:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:50,108 INFO L93 Difference]: Finished difference Result 7688 states and 12984 transitions. [2018-10-24 22:43:50,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:43:50,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 184 [2018-10-24 22:43:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:50,129 INFO L225 Difference]: With dead ends: 7688 [2018-10-24 22:43:50,129 INFO L226 Difference]: Without dead ends: 3952 [2018-10-24 22:43:50,141 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-24 22:43:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2018-10-24 22:43:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3950. [2018-10-24 22:43:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3950 states. [2018-10-24 22:43:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6553 transitions. [2018-10-24 22:43:50,256 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6553 transitions. Word has length 184 [2018-10-24 22:43:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:50,256 INFO L481 AbstractCegarLoop]: Abstraction has 3950 states and 6553 transitions. [2018-10-24 22:43:50,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 22:43:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6553 transitions. [2018-10-24 22:43:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 22:43:50,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:50,268 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-24 22:43:50,269 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:50,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1051999046, now seen corresponding path program 1 times [2018-10-24 22:43:50,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:50,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:50,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:50,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:50,271 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 22:43:50,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:50,747 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:50,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 22:43:50,749 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:50,766 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:50,767 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:51,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:43:51,957 INFO L272 AbstractInterpreter]: Visited 161 different actions 316 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:51,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:51,966 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:43:53,640 INFO L232 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 70.39% of their original sizes. [2018-10-24 22:43:53,641 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:54,198 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 22:43:54,199 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:54,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:54,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 22:43:54,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:54,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 22:43:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 22:43:54,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-10-24 22:43:54,202 INFO L87 Difference]: Start difference. First operand 3950 states and 6553 transitions. Second operand 23 states. [2018-10-24 22:45:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:34,601 INFO L93 Difference]: Finished difference Result 7900 states and 13234 transitions. [2018-10-24 22:45:34,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:45:34,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 196 [2018-10-24 22:45:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:34,622 INFO L225 Difference]: With dead ends: 7900 [2018-10-24 22:45:34,622 INFO L226 Difference]: Without dead ends: 4164 [2018-10-24 22:45:34,633 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 204 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2018-10-24 22:45:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2018-10-24 22:45:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4161. [2018-10-24 22:45:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4161 states. [2018-10-24 22:45:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 6781 transitions. [2018-10-24 22:45:34,753 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 6781 transitions. Word has length 196 [2018-10-24 22:45:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:45:34,754 INFO L481 AbstractCegarLoop]: Abstraction has 4161 states and 6781 transitions. [2018-10-24 22:45:34,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 22:45:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 6781 transitions. [2018-10-24 22:45:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 22:45:34,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:45:34,766 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:45:34,767 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:45:34,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2087994975, now seen corresponding path program 1 times [2018-10-24 22:45:34,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:45:34,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:34,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:34,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:34,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:45:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:45:35,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:35,257 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:45:35,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 22:45:35,258 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:45:35,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:45:35,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:37,247 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:45:37,247 INFO L272 AbstractInterpreter]: Visited 160 different actions 313 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:45:37,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:37,259 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:45:40,078 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 87.6% of their original sizes. [2018-10-24 22:45:40,078 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:45:45,568 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 22:45:45,569 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:45:45,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:45:45,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-24 22:45:45,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:45:45,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 22:45:45,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 22:45:45,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:45:45,570 INFO L87 Difference]: Start difference. First operand 4161 states and 6781 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 22:45:54,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 22:45:54,423 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:54,429 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:54,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:54 BoogieIcfgContainer [2018-10-24 22:45:54,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:54,430 INFO L168 Benchmark]: Toolchain (without parser) took 249404.85 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 112.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,431 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-10-24 22:45:54,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1181.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 329.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,434 INFO L168 Benchmark]: Boogie Preprocessor took 115.84 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,434 INFO L168 Benchmark]: RCFGBuilder took 4908.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,435 INFO L168 Benchmark]: TraceAbstraction took 242864.32 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 630.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:54,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1181.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 329.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.84 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4908.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242864.32 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 630.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1482]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1482). Cancelled while BasicCegarLoop was constructing difference of abstraction (4161states) and FLOYD_HOARE automaton (currently 16 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (545 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 242.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 221.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1441 SDtfs, 6265 SDslu, 2884 SDs, 0 SdLazy, 15186 SolverSat, 825 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 175.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 617 GetRequests, 444 SyntacticMatches, 94 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4161occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9987348985099259 AbsIntWeakeningRatio, 0.33507853403141363 AbsIntAvgWeakeningVarsNumRemoved, 19.12216404886562 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 178 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 434608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 164/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown