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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:42:17,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:42:17,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:42:17,035 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:42:17,036 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:42:17,037 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:42:17,038 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:42:17,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:42:17,043 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:42:17,044 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:42:17,045 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:42:17,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:42:17,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:42:17,054 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:42:17,055 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:42:17,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:42:17,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:42:17,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:42:17,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:42:17,063 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:42:17,065 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:42:17,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:42:17,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:42:17,072 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:42:17,073 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:42:17,076 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:42:17,077 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:42:17,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:42:17,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:42:17,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:42:17,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:42:17,083 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:42:17,083 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:42:17,085 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:42:17,086 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:42:17,088 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:42:17,088 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:42:17,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:42:17,111 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:42:17,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:42:17,114 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:42:17,114 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:42:17,114 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:42:17,114 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:42:17,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:42:17,115 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:42:17,116 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:42:17,116 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:42:17,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:42:17,116 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:42:17,116 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:42:17,117 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:42:17,118 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:42:17,118 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:42:17,118 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:42:17,118 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:42:17,118 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:42:17,119 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:42:17,119 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:42:17,119 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:42:17,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:42:17,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:42:17,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:42:17,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:42:17,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:42:17,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:42:17,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:42:17,123 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:42:17,123 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:42:17,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:42:17,123 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:42:17,124 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:42:17,124 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:42:17,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:42:17,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:42:17,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:42:17,221 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:42:17,221 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:42:17,222 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-11-07 08:42:17,292 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3d1b681/82adf95577364698a3d4fc64d70fa715/FLAG4b6455b30 [2018-11-07 08:42:18,063 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:42:18,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-11-07 08:42:18,099 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3d1b681/82adf95577364698a3d4fc64d70fa715/FLAG4b6455b30 [2018-11-07 08:42:18,115 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3d1b681/82adf95577364698a3d4fc64d70fa715 [2018-11-07 08:42:18,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:42:18,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:42:18,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:42:18,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:42:18,135 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:42:18,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:18" (1/1) ... [2018-11-07 08:42:18,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c326893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:18, skipping insertion in model container [2018-11-07 08:42:18,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:18" (1/1) ... [2018-11-07 08:42:18,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:42:18,318 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:42:19,705 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:42:19,711 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:42:20,331 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:42:20,369 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:42:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20 WrapperNode [2018-11-07 08:42:20,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:42:20,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:42:20,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:42:20,371 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:42:20,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:42:20,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:42:20,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:42:20,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:42:20,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:42:20,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:42:20,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:42:20,903 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:42:20,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (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 08:42:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:42:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:42:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:42:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:42:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:42:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:42:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:42:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:42:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:42:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:42:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:42:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:42:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:42:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:42:20,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:42:31,101 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:42:31,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:31 BoogieIcfgContainer [2018-11-07 08:42:31,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:42:31,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:42:31,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:42:31,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:42:31,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:18" (1/3) ... [2018-11-07 08:42:31,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e903257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:31, skipping insertion in model container [2018-11-07 08:42:31,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (2/3) ... [2018-11-07 08:42:31,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e903257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:31, skipping insertion in model container [2018-11-07 08:42:31,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:31" (3/3) ... [2018-11-07 08:42:31,111 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36_true-unreach-call.c [2018-11-07 08:42:31,121 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:42:31,131 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:42:31,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:42:31,283 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:42:31,283 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:42:31,283 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:42:31,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:42:31,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:42:31,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:42:31,284 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:42:31,284 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:42:31,326 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 08:42:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 08:42:31,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:42:31,338 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] [2018-11-07 08:42:31,340 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:42:31,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash -21070164, now seen corresponding path program 1 times [2018-11-07 08:42:31,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:42:31,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:31,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:31,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:31,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:42:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:31,886 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:42:32,007 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 08:42:32,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:42:32,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:42:32,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:42:32,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:42:32,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:42:32,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:42:32,038 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 08:42:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:42:39,485 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 08:42:39,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:42:39,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-11-07 08:42:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:42:39,521 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 08:42:39,521 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 08:42:39,532 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 08:42:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 08:42:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 08:42:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 08:42:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 08:42:39,697 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 64 [2018-11-07 08:42:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:42:39,698 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 08:42:39,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:42:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 08:42:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 08:42:39,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:42:39,707 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, 1, 1, 1, 1, 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 08:42:39,707 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:42:39,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash -131464626, now seen corresponding path program 1 times [2018-11-07 08:42:39,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:42:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:39,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:39,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:42:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 50 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:42:40,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:42:40,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:42:40,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 08:42:40,531 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], [2279], [2281], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:42:40,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:42:40,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:42:41,299 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:42:41,301 INFO L272 AbstractInterpreter]: Visited 84 different actions 160 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 08:42:41,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:41,352 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:42:41,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:42:41,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:42:41,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:41,364 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:42:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:41,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:42:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:42:41,670 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:42:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:42:42,172 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:42:42,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 08:42:42,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:42:42,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:42:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:42:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:42:42,175 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 3 states. [2018-11-07 08:42:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:42:51,187 INFO L93 Difference]: Finished difference Result 4738 states and 8562 transitions. [2018-11-07 08:42:51,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:42:51,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2018-11-07 08:42:51,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:42:51,208 INFO L225 Difference]: With dead ends: 4738 [2018-11-07 08:42:51,208 INFO L226 Difference]: Without dead ends: 3140 [2018-11-07 08:42:51,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 279 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:42:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-11-07 08:42:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2018-11-07 08:42:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2018-11-07 08:42:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5269 transitions. [2018-11-07 08:42:51,329 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5269 transitions. Word has length 140 [2018-11-07 08:42:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:42:51,330 INFO L480 AbstractCegarLoop]: Abstraction has 3140 states and 5269 transitions. [2018-11-07 08:42:51,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:42:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5269 transitions. [2018-11-07 08:42:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 08:42:51,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:42:51,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:51,336 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:42:51,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:51,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1817766790, now seen corresponding path program 1 times [2018-11-07 08:42:51,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:42:51,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:51,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:51,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:51,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:42:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:42:51,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:42:51,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:42:51,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:42:51,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:42:51,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:42:51,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:42:51,528 INFO L87 Difference]: Start difference. First operand 3140 states and 5269 transitions. Second operand 5 states. [2018-11-07 08:43:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:43:02,546 INFO L93 Difference]: Finished difference Result 9545 states and 16221 transitions. [2018-11-07 08:43:02,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:43:02,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-11-07 08:43:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:43:02,589 INFO L225 Difference]: With dead ends: 9545 [2018-11-07 08:43:02,590 INFO L226 Difference]: Without dead ends: 6411 [2018-11-07 08:43:02,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:43:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2018-11-07 08:43:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6350. [2018-11-07 08:43:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6350 states. [2018-11-07 08:43:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 9814 transitions. [2018-11-07 08:43:02,830 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 9814 transitions. Word has length 144 [2018-11-07 08:43:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:43:02,832 INFO L480 AbstractCegarLoop]: Abstraction has 6350 states and 9814 transitions. [2018-11-07 08:43:02,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:43:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 9814 transitions. [2018-11-07 08:43:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 08:43:02,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:43:02,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:02,845 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:43:02,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:43:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash 841617251, now seen corresponding path program 1 times [2018-11-07 08:43:02,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:43:02,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:02,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:43:02,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:02,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:43:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:43:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:43:03,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:43:03,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:43:03,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:43:03,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:43:03,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:43:03,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:43:03,213 INFO L87 Difference]: Start difference. First operand 6350 states and 9814 transitions. Second operand 6 states. [2018-11-07 08:43:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:43:14,830 INFO L93 Difference]: Finished difference Result 25488 states and 42008 transitions. [2018-11-07 08:43:14,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:43:14,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-11-07 08:43:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:43:14,941 INFO L225 Difference]: With dead ends: 25488 [2018-11-07 08:43:14,941 INFO L226 Difference]: Without dead ends: 19144 [2018-11-07 08:43:15,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:43:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19144 states. [2018-11-07 08:43:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19144 to 19100. [2018-11-07 08:43:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19100 states. [2018-11-07 08:43:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19100 states to 19100 states and 28653 transitions. [2018-11-07 08:43:15,721 INFO L78 Accepts]: Start accepts. Automaton has 19100 states and 28653 transitions. Word has length 155 [2018-11-07 08:43:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:43:15,722 INFO L480 AbstractCegarLoop]: Abstraction has 19100 states and 28653 transitions. [2018-11-07 08:43:15,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:43:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19100 states and 28653 transitions. [2018-11-07 08:43:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 08:43:15,727 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:43:15,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:15,728 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:43:15,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:43:15,728 INFO L82 PathProgramCache]: Analyzing trace with hash -483818014, now seen corresponding path program 1 times [2018-11-07 08:43:15,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:43:15,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:15,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:43:15,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:15,732 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:43:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:43:16,038 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:43:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:43:16,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:43:16,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:43:16,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:43:16,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:43:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:43:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:43:16,096 INFO L87 Difference]: Start difference. First operand 19100 states and 28653 transitions. Second operand 6 states. [2018-11-07 08:43:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:43:23,979 INFO L93 Difference]: Finished difference Result 51434 states and 82675 transitions. [2018-11-07 08:43:23,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:43:23,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-11-07 08:43:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:43:24,134 INFO L225 Difference]: With dead ends: 51434 [2018-11-07 08:43:24,135 INFO L226 Difference]: Without dead ends: 32340 [2018-11-07 08:43:24,197 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 08:43:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32340 states. [2018-11-07 08:43:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32340 to 32105. [2018-11-07 08:43:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32105 states. [2018-11-07 08:43:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32105 states to 32105 states and 48218 transitions. [2018-11-07 08:43:25,029 INFO L78 Accepts]: Start accepts. Automaton has 32105 states and 48218 transitions. Word has length 178 [2018-11-07 08:43:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:43:25,029 INFO L480 AbstractCegarLoop]: Abstraction has 32105 states and 48218 transitions. [2018-11-07 08:43:25,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:43:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 32105 states and 48218 transitions. [2018-11-07 08:43:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 08:43:25,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:43:25,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:25,036 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:43:25,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:43:25,037 INFO L82 PathProgramCache]: Analyzing trace with hash 141226831, now seen corresponding path program 1 times [2018-11-07 08:43:25,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:43:25,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:25,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:43:25,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:25,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:43:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:43:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:43:25,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:43:25,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:43:25,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:43:25,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:43:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:43:25,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:43:25,303 INFO L87 Difference]: Start difference. First operand 32105 states and 48218 transitions. Second operand 4 states. [2018-11-07 08:43:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:43:34,674 INFO L93 Difference]: Finished difference Result 82858 states and 128330 transitions. [2018-11-07 08:43:34,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:43:34,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2018-11-07 08:43:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:43:34,866 INFO L225 Difference]: With dead ends: 82858 [2018-11-07 08:43:34,866 INFO L226 Difference]: Without dead ends: 50759 [2018-11-07 08:43:35,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 08:43:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50759 states. [2018-11-07 08:43:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50759 to 50759. [2018-11-07 08:43:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50759 states. [2018-11-07 08:43:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50759 states to 50759 states and 69836 transitions. [2018-11-07 08:43:36,080 INFO L78 Accepts]: Start accepts. Automaton has 50759 states and 69836 transitions. Word has length 213 [2018-11-07 08:43:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:43:36,081 INFO L480 AbstractCegarLoop]: Abstraction has 50759 states and 69836 transitions. [2018-11-07 08:43:36,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:43:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 50759 states and 69836 transitions. [2018-11-07 08:43:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-07 08:43:36,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:43:36,114 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:43:36,115 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:43:36,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:43:36,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1519873088, now seen corresponding path program 1 times [2018-11-07 08:43:36,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:43:36,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:36,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:43:36,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:43:36,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:43:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:43:36,463 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:43:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 114 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:43:36,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:43:36,959 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:43:36,959 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-11-07 08:43:36,960 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], [2279], [2281], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [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], [2524], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [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], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2692], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:43:36,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:43:36,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:43:37,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:43:37,259 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:43:37,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:43:37,293 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:43:37,884 INFO L227 lantSequenceWeakener]: Weakened 319 states. On average, predicates are now at 75.58% of their original sizes. [2018-11-07 08:43:37,884 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:43:38,175 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-11-07 08:43:38,175 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:43:38,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:43:38,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:43:38,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:43:38,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:43:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:43:38,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:43:38,178 INFO L87 Difference]: Start difference. First operand 50759 states and 69836 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown