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/Problem19_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:23:46,802 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:23:46,804 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:23:46,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:23:46,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:23:46,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:23:46,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:23:46,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:23:46,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:23:46,833 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:23:46,834 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:23:46,835 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:23:46,836 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:23:46,837 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:23:46,843 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:23:46,844 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:23:46,848 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:23:46,850 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:23:46,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:23:46,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:23:46,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:23:46,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:23:46,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:23:46,860 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:23:46,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:23:46,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:23:46,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:23:46,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:23:46,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:23:46,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:23:46,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:23:46,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:23:46,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:23:46,866 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:23:46,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:23:46,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:23:46,868 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 15:23:46,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:23:46,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:23:46,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:23:46,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:23:46,888 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:23:46,888 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:23:46,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:23:46,888 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:23:46,888 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:23:46,889 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:23:46,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:23:46,889 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:23:46,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:23:46,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:23:46,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:23:46,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:23:46,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:23:46,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:23:46,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:23:46,891 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:23:46,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:23:46,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:23:46,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:23:46,892 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:23:46,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:23:46,892 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:23:46,893 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:23:46,894 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:23:46,894 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:23:46,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:23:46,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:23:46,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:23:46,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:23:46,960 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:23:46,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-27 15:23:47,037 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/807c268fd/d1645a0660eb421091c3978bb586f254/FLAG702e9f3b9 [2018-10-27 15:23:48,029 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:23:48,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-27 15:23:48,081 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/807c268fd/d1645a0660eb421091c3978bb586f254/FLAG702e9f3b9 [2018-10-27 15:23:48,101 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/807c268fd/d1645a0660eb421091c3978bb586f254 [2018-10-27 15:23:48,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:23:48,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:23:48,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:23:48,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:23:48,128 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:23:48,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:48" (1/1) ... [2018-10-27 15:23:48,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:48, skipping insertion in model container [2018-10-27 15:23:48,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:48" (1/1) ... [2018-10-27 15:23:48,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:23:48,400 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:23:50,404 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:23:50,408 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:23:51,627 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:23:51,677 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:23:51,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51 WrapperNode [2018-10-27 15:23:51,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:23:51,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:23:51,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:23:51,680 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:23:51,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:51,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:23:52,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:23:52,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:23:52,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:23:52,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (1/1) ... [2018-10-27 15:23:52,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:23:52,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:23:52,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:23:52,801 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:23:52,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (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 15:23:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:23:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:23:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 15:23:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 15:23:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 15:23:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 15:23:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 15:23:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 15:23:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:23:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:23:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:23:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:23:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:23:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:23:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:23:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:23:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:23:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:24:11,255 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:24:11,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:11 BoogieIcfgContainer [2018-10-27 15:24:11,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:24:11,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:24:11,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:24:11,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:24:11,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:23:48" (1/3) ... [2018-10-27 15:24:11,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287e6864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:11, skipping insertion in model container [2018-10-27 15:24:11,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:51" (2/3) ... [2018-10-27 15:24:11,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287e6864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:24:11, skipping insertion in model container [2018-10-27 15:24:11,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:24:11" (3/3) ... [2018-10-27 15:24:11,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49_true-unreach-call.c [2018-10-27 15:24:11,276 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:24:11,288 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:24:11,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:24:11,372 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:24:11,372 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:24:11,372 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:24:11,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:24:11,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:24:11,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:24:11,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:24:11,373 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:24:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 15:24:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 15:24:11,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:24:11,440 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] [2018-10-27 15:24:11,443 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:24:11,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:24:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash 607797826, now seen corresponding path program 1 times [2018-10-27 15:24:11,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:24:11,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:11,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:24:11,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:11,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:24:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:24:11,923 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:24:12,016 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 15:24:12,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:24:12,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:24:12,019 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:24:12,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:24:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:24:12,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:24:12,048 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 15:24:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:24:29,764 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-27 15:24:29,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:24:29,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-27 15:24:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:24:29,817 INFO L225 Difference]: With dead ends: 4998 [2018-10-27 15:24:29,817 INFO L226 Difference]: Without dead ends: 3218 [2018-10-27 15:24:29,837 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 [2018-10-27 15:24:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-27 15:24:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-27 15:24:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 15:24:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-27 15:24:30,048 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 49 [2018-10-27 15:24:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:24:30,049 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-27 15:24:30,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:24:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-27 15:24:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 15:24:30,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:24:30,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:30,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:24:30,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:24:30,062 INFO L82 PathProgramCache]: Analyzing trace with hash -539453364, now seen corresponding path program 1 times [2018-10-27 15:24:30,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:24:30,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:30,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:24:30,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:24:30,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:24:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:24:30,457 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:24:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:24:30,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:24:30,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:24:30,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:24:30,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:24:30,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:24:30,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:24:30,884 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-27 15:25:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:25:01,001 INFO L93 Difference]: Finished difference Result 10744 states and 19770 transitions. [2018-10-27 15:25:01,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:25:01,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 15:25:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:25:01,045 INFO L225 Difference]: With dead ends: 10744 [2018-10-27 15:25:01,045 INFO L226 Difference]: Without dead ends: 7535 [2018-10-27 15:25:01,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:25:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-27 15:25:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7498. [2018-10-27 15:25:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7498 states. [2018-10-27 15:25:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12452 transitions. [2018-10-27 15:25:01,277 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12452 transitions. Word has length 121 [2018-10-27 15:25:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:25:01,277 INFO L481 AbstractCegarLoop]: Abstraction has 7498 states and 12452 transitions. [2018-10-27 15:25:01,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:25:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12452 transitions. [2018-10-27 15:25:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 15:25:01,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:25:01,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:01,290 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:25:01,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:25:01,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1062487657, now seen corresponding path program 1 times [2018-10-27 15:25:01,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:25:01,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:01,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:25:01,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:01,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:25:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:25:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:25:01,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:25:01,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:25:01,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:25:01,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:25:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:25:01,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:25:01,591 INFO L87 Difference]: Start difference. First operand 7498 states and 12452 transitions. Second operand 6 states. [2018-10-27 15:25:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:25:29,316 INFO L93 Difference]: Finished difference Result 23905 states and 40026 transitions. [2018-10-27 15:25:29,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:25:29,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 15:25:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:25:29,388 INFO L225 Difference]: With dead ends: 23905 [2018-10-27 15:25:29,389 INFO L226 Difference]: Without dead ends: 16413 [2018-10-27 15:25:29,420 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 15:25:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16413 states. [2018-10-27 15:25:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16413 to 16230. [2018-10-27 15:25:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16230 states. [2018-10-27 15:25:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 25357 transitions. [2018-10-27 15:25:29,820 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 25357 transitions. Word has length 123 [2018-10-27 15:25:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:25:29,821 INFO L481 AbstractCegarLoop]: Abstraction has 16230 states and 25357 transitions. [2018-10-27 15:25:29,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:25:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 25357 transitions. [2018-10-27 15:25:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 15:25:29,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:25:29,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:29,826 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:25:29,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:25:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1488344396, now seen corresponding path program 1 times [2018-10-27 15:25:29,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:25:29,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:29,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:25:29,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:29,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:25:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:25:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:25:30,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:25:30,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:25:30,157 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:25:30,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:25:30,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:25:30,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:25:30,159 INFO L87 Difference]: Start difference. First operand 16230 states and 25357 transitions. Second operand 5 states. [2018-10-27 15:25:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:25:58,771 INFO L93 Difference]: Finished difference Result 48265 states and 76873 transitions. [2018-10-27 15:25:58,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:25:58,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2018-10-27 15:25:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:25:58,905 INFO L225 Difference]: With dead ends: 48265 [2018-10-27 15:25:58,906 INFO L226 Difference]: Without dead ends: 32041 [2018-10-27 15:25:58,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:25:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32041 states. [2018-10-27 15:25:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32041 to 31565. [2018-10-27 15:25:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31565 states. [2018-10-27 15:25:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31565 states to 31565 states and 43757 transitions. [2018-10-27 15:25:59,777 INFO L78 Accepts]: Start accepts. Automaton has 31565 states and 43757 transitions. Word has length 154 [2018-10-27 15:25:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:25:59,777 INFO L481 AbstractCegarLoop]: Abstraction has 31565 states and 43757 transitions. [2018-10-27 15:25:59,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:25:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31565 states and 43757 transitions. [2018-10-27 15:25:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 15:25:59,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:25:59,788 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:25:59,789 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:25:59,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:25:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 664970826, now seen corresponding path program 1 times [2018-10-27 15:25:59,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:25:59,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:59,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:25:59,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:25:59,794 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:25:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:26:00,107 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:26:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:26:00,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:26:00,520 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:26:00,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-27 15:26:00,525 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5518], [5520], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 15:26:00,598 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:26:00,599 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:26:01,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:26:01,173 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:26:01,175 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 15:26:01,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:26:01,219 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:26:01,712 INFO L227 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 75.53% of their original sizes. [2018-10-27 15:26:01,712 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:26:02,073 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-10-27 15:26:02,073 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:26:02,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:26:02,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 15:26:02,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:26:02,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 15:26:02,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 15:26:02,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:26:02,076 INFO L87 Difference]: Start difference. First operand 31565 states and 43757 transitions. Second operand 7 states. Received shutdown request... [2018-10-27 15:27:40,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:27:40,453 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:27:40,458 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:27:40,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:27:40 BoogieIcfgContainer [2018-10-27 15:27:40,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:27:40,460 INFO L168 Benchmark]: Toolchain (without parser) took 232344.02 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 457.5 MB. Max. memory is 7.1 GB. [2018-10-27 15:27:40,461 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 15:27:40,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3558.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.2 MB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-27 15:27:40,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 704.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.8 MB). Free memory was 976.2 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:27:40,463 INFO L168 Benchmark]: Boogie Preprocessor took 416.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2018-10-27 15:27:40,464 INFO L168 Benchmark]: RCFGBuilder took 18455.26 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 488.9 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. [2018-10-27 15:27:40,465 INFO L168 Benchmark]: TraceAbstraction took 209200.30 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 15:27:40,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3558.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.2 MB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 704.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.8 MB). Free memory was 976.2 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 416.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18455.26 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 488.9 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209200.30 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (31565states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7681 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 203.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2791 SDtfs, 22164 SDslu, 3044 SDs, 0 SdLazy, 39402 SolverSat, 9641 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 175.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 254 GetRequests, 223 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31565occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978402247610111 AbsIntWeakeningRatio, 0.1278538812785388 AbsIntAvgWeakeningVarsNumRemoved, 19.23744292237443 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 699 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 667 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 325090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 215/280 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown