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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:18:24,944 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:18:24,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:18:24,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:18:24,964 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:18:24,965 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:18:24,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:18:24,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:18:24,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:18:24,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:18:24,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:18:24,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:18:24,982 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:18:24,983 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:18:24,984 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:18:24,987 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:18:24,988 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:18:24,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:18:24,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:18:25,000 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:18:25,003 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:18:25,004 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:18:25,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:18:25,009 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:18:25,010 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:18:25,011 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:18:25,012 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:18:25,013 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:18:25,013 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:18:25,014 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:18:25,015 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:18:25,015 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:18:25,016 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:18:25,016 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:18:25,017 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:18:25,018 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:18:25,018 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:18:25,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:18:25,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:18:25,037 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:18:25,037 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:18:25,037 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:18:25,037 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:18:25,038 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:18:25,038 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:18:25,038 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:18:25,038 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:18:25,038 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:18:25,039 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:18:25,039 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:18:25,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:18:25,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:18:25,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:18:25,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:18:25,042 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:18:25,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:18:25,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:18:25,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:18:25,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:18:25,043 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:18:25,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:18:25,044 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:18:25,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:18:25,044 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:18:25,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:18:25,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:18:25,045 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:18:25,045 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:18:25,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:18:25,046 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:18:25,046 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:18:25,046 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:18:25,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:18:25,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:18:25,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:18:25,128 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:18:25,128 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:18:25,129 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-11-07 20:18:25,191 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902fc60aa/b0d6fe72cf31406fa26f636684cfff45/FLAG6c8c9848b [2018-11-07 20:18:25,919 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:18:25,920 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-11-07 20:18:25,948 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902fc60aa/b0d6fe72cf31406fa26f636684cfff45/FLAG6c8c9848b [2018-11-07 20:18:25,964 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902fc60aa/b0d6fe72cf31406fa26f636684cfff45 [2018-11-07 20:18:25,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:18:25,979 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:18:25,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:18:25,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:18:25,987 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:18:25,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:18:25" (1/1) ... [2018-11-07 20:18:25,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e22a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:25, skipping insertion in model container [2018-11-07 20:18:25,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:18:25" (1/1) ... [2018-11-07 20:18:26,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:18:26,189 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:18:27,492 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:18:27,497 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:18:28,101 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:18:28,138 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:18:28,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28 WrapperNode [2018-11-07 20:18:28,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:18:28,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:18:28,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:18:28,140 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:18:28,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:18:28,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:18:28,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:18:28,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:18:28,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (1/1) ... [2018-11-07 20:18:28,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:18:28,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:18:28,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:18:28,865 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:18:28,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (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 20:18:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:18:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:18:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:18:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:18:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:18:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:18:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:18:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:18:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:18:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:18:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:18:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:18:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:18:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:18:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:18:37,975 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:18:37,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:18:37 BoogieIcfgContainer [2018-11-07 20:18:37,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:18:37,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:18:37,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:18:37,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:18:37,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:18:25" (1/3) ... [2018-11-07 20:18:37,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d919e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:18:37, skipping insertion in model container [2018-11-07 20:18:37,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:28" (2/3) ... [2018-11-07 20:18:37,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d919e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:18:37, skipping insertion in model container [2018-11-07 20:18:37,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:18:37" (3/3) ... [2018-11-07 20:18:37,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-11-07 20:18:37,995 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:18:38,005 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:18:38,023 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:18:38,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:18:38,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:18:38,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:18:38,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:18:38,070 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:18:38,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:18:38,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:18:38,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:18:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:18:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 20:18:38,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:38,224 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:18:38,228 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:38,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2101117445, now seen corresponding path program 1 times [2018-11-07 20:18:38,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:38,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:38,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:38,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:38,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:38,805 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:18:38,928 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 20:18:38,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:18:38,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:18:38,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:38,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:18:38,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:18:38,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:18:38,959 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:18:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:46,311 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:18:46,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:18:46,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-07 20:18:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:46,354 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:18:46,354 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:18:46,371 INFO L604 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 [2018-11-07 20:18:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:18:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:18:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:18:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 20:18:46,554 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-11-07 20:18:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:46,555 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 20:18:46,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:18:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 20:18:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 20:18:46,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:46,564 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:18:46,565 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:46,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:46,565 INFO L82 PathProgramCache]: Analyzing trace with hash -843018732, now seen corresponding path program 1 times [2018-11-07 20:18:46,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:46,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:46,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:46,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:46,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:46,921 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:18:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:18:47,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:18:47,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:18:47,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:47,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:18:47,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:18:47,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:18:47,050 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 20:18:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:56,479 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 20:18:56,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:18:56,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-11-07 20:18:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:56,503 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 20:18:56,504 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 20:18:56,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:18:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 20:18:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 20:18:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 20:18:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 20:18:56,602 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 145 [2018-11-07 20:18:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:56,603 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 20:18:56,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:18:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 20:18:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 20:18:56,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:56,613 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:18:56,613 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:56,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:56,617 INFO L82 PathProgramCache]: Analyzing trace with hash -963200243, now seen corresponding path program 1 times [2018-11-07 20:18:56,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:56,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:56,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:56,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:56,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:18:56,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:18:56,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:18:56,910 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:56,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:18:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:18:56,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:18:56,912 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 20:19:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:08,131 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 20:19:08,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:19:08,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-11-07 20:19:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:08,177 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 20:19:08,177 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 20:19:08,193 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 20:19:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 20:19:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 20:19:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 20:19:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 20:19:08,459 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 150 [2018-11-07 20:19:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:08,460 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 20:19:08,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:19:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 20:19:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 20:19:08,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:08,467 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:19:08,468 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:08,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1301757085, now seen corresponding path program 1 times [2018-11-07 20:19:08,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:08,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:08,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:08,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:08,471 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:08,757 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:19:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:19:08,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:08,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:19:08,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:08,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:19:08,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:19:08,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:19:08,821 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 20:19:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:17,802 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 20:19:17,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:19:17,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 20:19:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:17,869 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 20:19:17,869 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 20:19:17,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:19:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 20:19:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 20:19:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 20:19:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 20:19:18,258 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 158 [2018-11-07 20:19:18,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:18,259 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 20:19:18,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:19:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 20:19:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 20:19:18,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:18,269 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:19:18,269 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:18,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash -825092784, now seen corresponding path program 1 times [2018-11-07 20:19:18,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:18,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:18,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:18,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:18,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:18,594 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:19:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:19:18,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:18,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:19:18,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:18,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:19:18,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:19:18,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:19:18,799 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 20:19:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:28,026 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 20:19:28,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:19:28,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-11-07 20:19:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:28,108 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 20:19:28,108 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 20:19:28,166 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 20:19:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 20:19:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 20:19:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 20:19:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 20:19:28,644 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 191 [2018-11-07 20:19:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:28,644 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 20:19:28,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:19:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 20:19:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 20:19:28,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:28,665 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:19:28,666 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:28,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:28,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1239328397, now seen corresponding path program 1 times [2018-11-07 20:19:28,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:28,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:28,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:28,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:28,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 20:19:29,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:29,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:19:29,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:29,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:19:29,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:19:29,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:19:29,188 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 5 states. [2018-11-07 20:19:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:41,246 INFO L93 Difference]: Finished difference Result 69046 states and 98689 transitions. [2018-11-07 20:19:41,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:19:41,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-11-07 20:19:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:41,427 INFO L225 Difference]: With dead ends: 69046 [2018-11-07 20:19:41,428 INFO L226 Difference]: Without dead ends: 47401 [2018-11-07 20:19:41,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:19:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47401 states. [2018-11-07 20:19:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47401 to 46460. [2018-11-07 20:19:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46460 states. [2018-11-07 20:19:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46460 states to 46460 states and 60827 transitions. [2018-11-07 20:19:42,814 INFO L78 Accepts]: Start accepts. Automaton has 46460 states and 60827 transitions. Word has length 267 [2018-11-07 20:19:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:42,818 INFO L480 AbstractCegarLoop]: Abstraction has 46460 states and 60827 transitions. [2018-11-07 20:19:42,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:19:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 46460 states and 60827 transitions. [2018-11-07 20:19:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 20:19:42,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:42,851 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:19:42,851 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:42,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash 866225877, now seen corresponding path program 1 times [2018-11-07 20:19:42,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:42,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:42,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:42,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:42,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:19:43,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:19:43,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:19:43,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 20:19:43,119 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2335], [2337], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:19:43,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:19:43,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:19:43,850 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:19:43,852 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:19:43,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:43,905 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:19:44,485 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 75.77% of their original sizes. [2018-11-07 20:19:44,485 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:19:44,812 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 20:19:44,812 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:19:44,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:19:44,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 20:19:44,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:19:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:19:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:19:44,816 INFO L87 Difference]: Start difference. First operand 46460 states and 60827 transitions. Second operand 8 states. [2018-11-07 20:19:50,722 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:20:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:20:22,907 INFO L93 Difference]: Finished difference Result 93684 states and 122541 transitions. [2018-11-07 20:20:22,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:20:22,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 271 [2018-11-07 20:20:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:20:23,041 INFO L225 Difference]: With dead ends: 93684 [2018-11-07 20:20:23,042 INFO L226 Difference]: Without dead ends: 47230 [2018-11-07 20:20:23,127 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:20:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47230 states. [2018-11-07 20:20:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47230 to 47228. [2018-11-07 20:20:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47228 states. [2018-11-07 20:20:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47228 states to 47228 states and 61606 transitions. [2018-11-07 20:20:23,925 INFO L78 Accepts]: Start accepts. Automaton has 47228 states and 61606 transitions. Word has length 271 [2018-11-07 20:20:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:20:23,925 INFO L480 AbstractCegarLoop]: Abstraction has 47228 states and 61606 transitions. [2018-11-07 20:20:23,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:20:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 47228 states and 61606 transitions. [2018-11-07 20:20:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 20:20:23,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:20:23,962 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:23,962 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:20:23,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash -313680366, now seen corresponding path program 1 times [2018-11-07 20:20:23,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:20:23,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:23,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:20:23,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:23,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:20:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:20:24,270 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:20:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 198 proven. 152 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:20:24,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:20:24,405 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:20:24,406 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 20:20:24,406 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2335], [2337], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:20:24,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:20:24,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:20:24,765 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:20:24,766 INFO L272 AbstractInterpreter]: Visited 129 different actions 254 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:20:24,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:24,776 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:20:26,181 INFO L227 lantSequenceWeakener]: Weakened 344 states. On average, predicates are now at 75.65% of their original sizes. [2018-11-07 20:20:26,181 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:20:26,445 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 20:20:26,445 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:20:26,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:20:26,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 20:20:26,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:20:26,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:20:26,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:20:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:20:26,448 INFO L87 Difference]: Start difference. First operand 47228 states and 61606 transitions. Second operand 11 states. [2018-11-07 20:20:29,913 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:21:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:21:06,507 INFO L93 Difference]: Finished difference Result 95224 states and 124350 transitions. [2018-11-07 20:21:06,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:21:06,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 347 [2018-11-07 20:21:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:21:06,618 INFO L225 Difference]: With dead ends: 95224 [2018-11-07 20:21:06,618 INFO L226 Difference]: Without dead ends: 48770 [2018-11-07 20:21:06,684 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 355 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:21:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48770 states. [2018-11-07 20:21:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48770 to 48767. [2018-11-07 20:21:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48767 states. [2018-11-07 20:21:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48767 states to 48767 states and 63160 transitions. [2018-11-07 20:21:07,378 INFO L78 Accepts]: Start accepts. Automaton has 48767 states and 63160 transitions. Word has length 347 [2018-11-07 20:21:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:21:07,379 INFO L480 AbstractCegarLoop]: Abstraction has 48767 states and 63160 transitions. [2018-11-07 20:21:07,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:21:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 48767 states and 63160 transitions. [2018-11-07 20:21:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-11-07 20:21:07,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:21:07,415 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:07,415 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:21:07,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:07,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1908218058, now seen corresponding path program 1 times [2018-11-07 20:21:07,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:21:07,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:07,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:21:07,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:07,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:21:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:21:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 20:21:07,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:21:07,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:21:07,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-11-07 20:21:07,887 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2335], [2337], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:21:07,892 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:21:07,892 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:21:08,053 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:21:08,309 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:21:08,309 INFO L272 AbstractInterpreter]: Visited 155 different actions 463 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 20:21:08,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:08,322 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:21:08,798 INFO L227 lantSequenceWeakener]: Weakened 410 states. On average, predicates are now at 75.55% of their original sizes. [2018-11-07 20:21:08,798 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:21:08,924 INFO L415 sIntCurrentIteration]: We unified 412 AI predicates to 412 [2018-11-07 20:21:08,924 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:21:08,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:21:08,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:21:08,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:21:08,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:21:08,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:21:08,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:21:08,926 INFO L87 Difference]: Start difference. First operand 48767 states and 63160 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 20:22:09,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:22:09,520 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:22:09,525 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:22:09,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:22:09 BoogieIcfgContainer [2018-11-07 20:22:09,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:22:09,527 INFO L168 Benchmark]: Toolchain (without parser) took 223548.47 ms. Allocated memory was 1.5 GB in the beginning and 6.6 GB in the end (delta: 5.0 GB). Free memory was 1.4 GB in the beginning and 4.8 GB in the end (delta: -3.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,528 INFO L168 Benchmark]: CDTParser took 0.26 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 20:22:09,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2159.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 376.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,530 INFO L168 Benchmark]: Boogie Preprocessor took 347.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,531 INFO L168 Benchmark]: RCFGBuilder took 9111.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 660.4 MB). Peak memory consumption was 660.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,532 INFO L168 Benchmark]: TraceAbstraction took 211548.98 ms. Allocated memory was 2.3 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 1.6 GB in the beginning and 4.8 GB in the end (delta: -3.2 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:22:09,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2159.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 376.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 347.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9111.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 660.4 MB). Peak memory consumption was 660.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211548.98 ms. Allocated memory was 2.3 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 1.6 GB in the beginning and 4.8 GB in the end (delta: -3.2 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (48767states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (85491 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 198.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3380 SDtfs, 25524 SDslu, 2090 SDs, 0 SdLazy, 50882 SolverSat, 8143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1101 GetRequests, 1018 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48767occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.5s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.997713950108427 AbsIntWeakeningRatio, 0.09046692607003891 AbsIntAvgWeakeningVarsNumRemoved, 23.990272373540854 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1203 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2004 ConstructedInterpolants, 0 QuantifiedInterpolants, 1769094 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 1327/1556 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown