java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:14:27,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:14:27,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:14:27,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:14:27,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:14:27,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:14:27,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:14:27,846 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:14:27,849 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:14:27,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:14:27,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:14:27,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:14:27,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:14:27,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:14:27,856 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:14:27,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:14:27,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:14:27,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:14:27,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:14:27,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:14:27,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:14:27,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:14:27,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:14:27,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:14:27,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:14:27,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:14:27,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:14:27,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:14:27,882 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:14:27,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:14:27,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:14:27,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:14:27,884 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:14:27,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:14:27,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:14:27,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:14:27,887 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:14:27,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:14:27,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:14:27,908 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:14:27,908 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:14:27,908 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:14:27,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:14:27,909 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:14:27,909 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:14:27,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:14:27,910 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:14:27,910 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:14:27,910 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:14:27,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:14:27,912 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:14:27,912 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:14:27,912 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:14:27,912 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:14:27,913 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:14:27,913 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:14:27,913 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:14:27,913 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:14:27,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:14:27,915 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:14:27,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:14:27,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:14:27,915 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:14:27,916 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:14:27,917 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:14:27,917 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:14:27,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:14:27,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:14:27,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:14:27,996 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:14:27,996 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:14:27,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 04:14:28,061 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4300660e5/88bc35a00fb74300ba1143621c9e2525/FLAGdb93e9127 [2018-11-07 04:14:28,951 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:14:28,952 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 04:14:28,994 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4300660e5/88bc35a00fb74300ba1143621c9e2525/FLAGdb93e9127 [2018-11-07 04:14:29,009 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4300660e5/88bc35a00fb74300ba1143621c9e2525 [2018-11-07 04:14:29,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:14:29,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:14:29,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:14:29,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:14:29,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:14:29,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:14:29" (1/1) ... [2018-11-07 04:14:29,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:29, skipping insertion in model container [2018-11-07 04:14:29,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:14:29" (1/1) ... [2018-11-07 04:14:29,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:14:29,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:14:31,390 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:14:31,396 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:14:32,918 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:14:32,979 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:14:32,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32 WrapperNode [2018-11-07 04:14:32,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:14:32,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:14:32,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:14:32,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:14:32,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:14:33,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:14:33,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:14:33,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:14:33,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... [2018-11-07 04:14:33,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:14:33,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:14:33,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:14:33,917 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:14:33,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:14:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:14:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:14:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:14:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 04:14:33,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 04:14:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 04:14:33,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 04:14:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 04:14:33,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 04:14:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:14:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:14:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:14:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:14:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:14:33,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:14:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:14:33,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:14:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:14:33,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:14:48,806 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:14:48,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:14:48 BoogieIcfgContainer [2018-11-07 04:14:48,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:14:48,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:14:48,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:14:48,811 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:14:48,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:14:29" (1/3) ... [2018-11-07 04:14:48,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8638f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:14:48, skipping insertion in model container [2018-11-07 04:14:48,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:14:32" (2/3) ... [2018-11-07 04:14:48,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8638f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:14:48, skipping insertion in model container [2018-11-07 04:14:48,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:14:48" (3/3) ... [2018-11-07 04:14:48,815 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label16_true-unreach-call.c [2018-11-07 04:14:48,825 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:14:48,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:14:48,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:14:48,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:14:48,907 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:14:48,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:14:48,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:14:48,907 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:14:48,907 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:14:48,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:14:48,908 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:14:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 04:14:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 04:14:48,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:14:48,974 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] [2018-11-07 04:14:48,977 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:14:48,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:14:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash -370651844, now seen corresponding path program 1 times [2018-11-07 04:14:48,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:14:49,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:49,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:14:49,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:14:49,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:14:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:14:49,498 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 04:14:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:14:49,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:14:49,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:14:49,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:14:49,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:14:49,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:14:49,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:14:49,567 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 04:15:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:15:10,529 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 04:15:10,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:15:10,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 04:15:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:15:10,582 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 04:15:10,582 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 04:15:10,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:15:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 04:15:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 04:15:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 04:15:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 04:15:10,843 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 60 [2018-11-07 04:15:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:15:10,844 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 04:15:10,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:15:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 04:15:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 04:15:10,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:15:10,862 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:15:10,862 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:15:10,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:15:10,863 INFO L82 PathProgramCache]: Analyzing trace with hash 784651985, now seen corresponding path program 1 times [2018-11-07 04:15:10,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:15:10,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:10,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:15:10,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:10,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:15:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:15:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:15:11,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:15:11,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:15:11,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:15:11,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:15:11,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:15:11,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:15:11,211 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 04:15:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:15:34,031 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 04:15:34,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:15:34,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 04:15:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:15:34,107 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 04:15:34,107 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 04:15:34,128 INFO L604 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 [2018-11-07 04:15:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 04:15:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 04:15:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 04:15:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 04:15:34,536 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 132 [2018-11-07 04:15:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:15:34,536 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 04:15:34,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:15:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 04:15:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 04:15:34,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:15:34,547 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:15:34,547 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:15:34,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:15:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash -184474481, now seen corresponding path program 1 times [2018-11-07 04:15:34,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:15:34,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:34,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:15:34,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:34,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:15:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:15:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:15:34,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:15:34,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:15:34,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:15:34,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:15:34,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:15:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:15:34,902 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 04:15:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:15:49,882 INFO L93 Difference]: Finished difference Result 39926 states and 60287 transitions. [2018-11-07 04:15:49,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:15:49,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 04:15:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:15:50,014 INFO L225 Difference]: With dead ends: 39926 [2018-11-07 04:15:50,014 INFO L226 Difference]: Without dead ends: 26802 [2018-11-07 04:15:50,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:15:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26802 states. [2018-11-07 04:15:50,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26802 to 26541. [2018-11-07 04:15:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26541 states. [2018-11-07 04:15:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26541 states to 26541 states and 38641 transitions. [2018-11-07 04:15:50,626 INFO L78 Accepts]: Start accepts. Automaton has 26541 states and 38641 transitions. Word has length 142 [2018-11-07 04:15:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:15:50,627 INFO L480 AbstractCegarLoop]: Abstraction has 26541 states and 38641 transitions. [2018-11-07 04:15:50,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:15:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 26541 states and 38641 transitions. [2018-11-07 04:15:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 04:15:50,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:15:50,635 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:15:50,636 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:15:50,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:15:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash 739388191, now seen corresponding path program 1 times [2018-11-07 04:15:50,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:15:50,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:50,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:15:50,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:15:50,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:15:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:15:50,957 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:15:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:15:51,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:15:51,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:15:51,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:15:51,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:15:51,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:15:51,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:15:51,045 INFO L87 Difference]: Start difference. First operand 26541 states and 38641 transitions. Second operand 6 states. [2018-11-07 04:16:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:16:09,594 INFO L93 Difference]: Finished difference Result 70545 states and 106719 transitions. [2018-11-07 04:16:09,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:16:09,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 04:16:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:16:10,039 INFO L225 Difference]: With dead ends: 70545 [2018-11-07 04:16:10,039 INFO L226 Difference]: Without dead ends: 44010 [2018-11-07 04:16:10,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:16:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44010 states. [2018-11-07 04:16:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44010 to 43859. [2018-11-07 04:16:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43859 states. [2018-11-07 04:16:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 61102 transitions. [2018-11-07 04:16:10,904 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 61102 transitions. Word has length 175 [2018-11-07 04:16:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:16:10,904 INFO L480 AbstractCegarLoop]: Abstraction has 43859 states and 61102 transitions. [2018-11-07 04:16:10,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:16:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 61102 transitions. [2018-11-07 04:16:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 04:16:10,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:16:10,917 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:16:10,917 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:16:10,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:16:10,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2050066253, now seen corresponding path program 1 times [2018-11-07 04:16:10,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:16:10,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:16:10,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:16:10,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:16:10,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:16:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:16:11,236 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:16:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 159 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 04:16:11,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:16:11,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:16:11,631 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-07 04:16:11,638 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], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5606], [5608], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 04:16:11,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:16:11,725 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:16:14,551 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:16:14,552 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 04:16:14,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:16:14,584 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:16:17,326 INFO L227 lantSequenceWeakener]: Weakened 272 states. On average, predicates are now at 75.69% of their original sizes. [2018-11-07 04:16:17,326 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:16:17,857 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-11-07 04:16:17,857 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:16:17,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:16:17,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 04:16:17,858 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:16:17,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:16:17,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:16:17,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:16:17,860 INFO L87 Difference]: Start difference. First operand 43859 states and 61102 transitions. Second operand 7 states. [2018-11-07 04:16:21,916 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 04:18:00,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:18:00,580 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:18:00,585 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:18:00,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:18:00 BoogieIcfgContainer [2018-11-07 04:18:00,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:18:00,586 INFO L168 Benchmark]: Toolchain (without parser) took 211561.40 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,587 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 04:18:00,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3953.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.2 MB in the end (delta: 413.9 MB). Peak memory consumption was 413.9 MB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 498.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.5 MB). Free memory was 990.2 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,589 INFO L168 Benchmark]: Boogie Preprocessor took 436.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,592 INFO L168 Benchmark]: RCFGBuilder took 14890.68 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 149.4 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 663.3 MB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,593 INFO L168 Benchmark]: TraceAbstraction took 191777.36 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -924.0 MB). Peak memory consumption was 713.9 MB. Max. memory is 7.1 GB. [2018-11-07 04:18:00,599 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 3953.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 990.2 MB in the end (delta: 413.9 MB). Peak memory consumption was 413.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 498.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.5 MB). Free memory was 990.2 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 436.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14890.68 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 149.4 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 663.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191777.36 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -924.0 MB). Peak memory consumption was 713.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (43859states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (18777 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 191.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3436 SDtfs, 26362 SDslu, 3362 SDs, 0 SdLazy, 43293 SolverSat, 9695 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 322 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43859occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9961755146262188 AbsIntWeakeningRatio, 0.11971830985915492 AbsIntAvgWeakeningVarsNumRemoved, 1038.2535211267605 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 517 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 794 NumberOfCodeBlocks, 794 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 486559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 398/532 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown