java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:42:22,168 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:42:22,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:42:22,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:42:22,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:42:22,189 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:42:22,190 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:42:22,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:42:22,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:42:22,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:42:22,195 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:42:22,195 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:42:22,196 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:42:22,197 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:42:22,198 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:42:22,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:42:22,200 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:42:22,202 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:42:22,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:42:22,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:42:22,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:42:22,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:42:22,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:42:22,210 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:42:22,211 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:42:22,212 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:42:22,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:42:22,213 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:42:22,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:42:22,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:42:22,216 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:42:22,219 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:42:22,220 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:42:22,220 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:42:22,221 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:42:22,222 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:42:22,222 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:42:22,250 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:42:22,250 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:42:22,251 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:42:22,251 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:42:22,251 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:42:22,251 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:42:22,252 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:42:22,252 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:42:22,252 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:42:22,252 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:42:22,252 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:42:22,253 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:42:22,253 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:42:22,253 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:42:22,253 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:42:22,254 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:42:22,254 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:42:22,254 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:42:22,254 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:42:22,254 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:42:22,255 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:42:22,255 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:42:22,255 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:42:22,255 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:42:22,255 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:42:22,256 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:42:22,256 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:42:22,256 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:42:22,256 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:42:22,256 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:42:22,257 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:42:22,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:42:22,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:42:22,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:42:22,325 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:42:22,325 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:42:22,326 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-27 07:42:22,378 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc156447d/faf2676ff5ff4044a1cd759e1743c794/FLAGc88687f83 [2018-10-27 07:42:23,183 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:42:23,183 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-27 07:42:23,220 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc156447d/faf2676ff5ff4044a1cd759e1743c794/FLAGc88687f83 [2018-10-27 07:42:23,235 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc156447d/faf2676ff5ff4044a1cd759e1743c794 [2018-10-27 07:42:23,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:42:23,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:42:23,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:42:23,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:42:23,253 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:42:23,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:23" (1/1) ... [2018-10-27 07:42:23,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b792d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:23, skipping insertion in model container [2018-10-27 07:42:23,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:23" (1/1) ... [2018-10-27 07:42:23,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:42:23,407 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:42:24,759 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:42:24,765 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:42:25,361 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:42:25,392 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:42:25,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25 WrapperNode [2018-10-27 07:42:25,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:42:25,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:42:25,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:42:25,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:42:25,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:25,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:25,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:42:25,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:42:25,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:42:25,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:42:25,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:25,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:25,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:26,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:26,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:26,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... [2018-10-27 07:42:26,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:42:26,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:42:26,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:42:26,163 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:42:26,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:42:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:42:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:42:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:42:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:42:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:42:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:42:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:42:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:42:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:42:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:42:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:42:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:42:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:42:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:42:37,896 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:42:37,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:37 BoogieIcfgContainer [2018-10-27 07:42:37,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:42:37,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:42:37,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:42:37,902 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:42:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:42:23" (1/3) ... [2018-10-27 07:42:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343f0f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:37, skipping insertion in model container [2018-10-27 07:42:37,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:25" (2/3) ... [2018-10-27 07:42:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343f0f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:37, skipping insertion in model container [2018-10-27 07:42:37,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:37" (3/3) ... [2018-10-27 07:42:37,906 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-10-27 07:42:37,916 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:42:37,932 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:42:37,950 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:42:38,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:42:38,012 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:42:38,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:42:38,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:42:38,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:42:38,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:42:38,013 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:42:38,013 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:42:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:42:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-27 07:42:38,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:38,081 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:42:38,083 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:38,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash -539031517, now seen corresponding path program 1 times [2018-10-27 07:42:38,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:38,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:38,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:38,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:38,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:38,618 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:42:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:42:38,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:38,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:42:38,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:38,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:42:38,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:42:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:38,748 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:42:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:46,373 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:42:46,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:42:46,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-27 07:42:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:46,416 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:42:46,417 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:42:46,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:42:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:42:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:42:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-27 07:42:46,583 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 73 [2018-10-27 07:42:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:46,584 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-27 07:42:46,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:42:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-27 07:42:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 07:42:46,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:46,596 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:42:46,596 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:46,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1174971868, now seen corresponding path program 1 times [2018-10-27 07:42:46,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:46,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:46,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:46,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:46,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:46,969 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:42:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:42:47,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:47,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:42:47,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:47,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:42:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:42:47,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:42:47,233 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-27 07:42:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:59,228 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-27 07:42:59,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:42:59,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-27 07:42:59,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:59,246 INFO L225 Difference]: With dead ends: 4038 [2018-10-27 07:42:59,246 INFO L226 Difference]: Without dead ends: 2440 [2018-10-27 07:42:59,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:42:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-27 07:42:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-27 07:42:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-27 07:42:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-27 07:42:59,322 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 147 [2018-10-27 07:42:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:59,323 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-27 07:42:59,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:42:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-27 07:42:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-27 07:42:59,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:59,328 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:42:59,328 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:59,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash 710506752, now seen corresponding path program 1 times [2018-10-27 07:42:59,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:59,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:59,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:59,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:59,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:42:59,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:59,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:42:59,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:59,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:42:59,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:42:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:42:59,523 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-10-27 07:43:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:08,376 INFO L93 Difference]: Finished difference Result 9492 states and 16758 transitions. [2018-10-27 07:43:08,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:43:08,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-10-27 07:43:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:08,435 INFO L225 Difference]: With dead ends: 9492 [2018-10-27 07:43:08,435 INFO L226 Difference]: Without dead ends: 7085 [2018-10-27 07:43:08,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:43:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-10-27 07:43:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-10-27 07:43:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-10-27 07:43:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11755 transitions. [2018-10-27 07:43:08,682 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11755 transitions. Word has length 149 [2018-10-27 07:43:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:08,683 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 11755 transitions. [2018-10-27 07:43:08,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:43:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11755 transitions. [2018-10-27 07:43:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 07:43:08,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:08,696 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, 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] [2018-10-27 07:43:08,696 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:08,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:08,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2064727429, now seen corresponding path program 1 times [2018-10-27 07:43:08,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:08,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:08,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:08,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:08,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:43:09,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:09,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:43:09,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:09,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:43:09,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:43:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:43:09,027 INFO L87 Difference]: Start difference. First operand 7085 states and 11755 transitions. Second operand 6 states. [2018-10-27 07:43:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:15,625 INFO L93 Difference]: Finished difference Result 16634 states and 27837 transitions. [2018-10-27 07:43:15,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:43:15,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 07:43:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:15,674 INFO L225 Difference]: With dead ends: 16634 [2018-10-27 07:43:15,674 INFO L226 Difference]: Without dead ends: 9555 [2018-10-27 07:43:15,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:43:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2018-10-27 07:43:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 9513. [2018-10-27 07:43:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-10-27 07:43:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14979 transitions. [2018-10-27 07:43:15,938 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14979 transitions. Word has length 176 [2018-10-27 07:43:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:15,939 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14979 transitions. [2018-10-27 07:43:15,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:43:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14979 transitions. [2018-10-27 07:43:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-27 07:43:15,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:15,955 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, 3, 3, 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] [2018-10-27 07:43:15,955 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:15,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -907554919, now seen corresponding path program 1 times [2018-10-27 07:43:15,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:15,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:15,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:16,211 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:43:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 132 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:43:16,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:43:16,404 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:43:16,405 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-27 07:43:16,408 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], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2448], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:43:16,453 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:43:16,454 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:43:16,960 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:43:16,962 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:43:17,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:17,007 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:43:17,644 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 75.96% of their original sizes. [2018-10-27 07:43:17,644 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:43:17,910 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-10-27 07:43:17,910 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:43:17,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:43:17,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:43:17,914 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:17,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:43:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:43:17,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:43:17,916 INFO L87 Difference]: Start difference. First operand 9513 states and 14979 transitions. Second operand 6 states. [2018-10-27 07:45:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:45:55,951 INFO L93 Difference]: Finished difference Result 19790 states and 31161 transitions. [2018-10-27 07:45:55,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:45:55,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2018-10-27 07:45:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:45:55,989 INFO L225 Difference]: With dead ends: 19790 [2018-10-27 07:45:55,989 INFO L226 Difference]: Without dead ends: 10283 [2018-10-27 07:45:56,021 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:45:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2018-10-27 07:45:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10281. [2018-10-27 07:45:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10281 states. [2018-10-27 07:45:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 15760 transitions. [2018-10-27 07:45:56,261 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 15760 transitions. Word has length 239 [2018-10-27 07:45:56,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:45:56,261 INFO L481 AbstractCegarLoop]: Abstraction has 10281 states and 15760 transitions. [2018-10-27 07:45:56,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:45:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 15760 transitions. [2018-10-27 07:45:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-27 07:45:56,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:45:56,276 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, 3, 3, 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] [2018-10-27 07:45:56,277 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:45:56,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:45:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash 851544685, now seen corresponding path program 1 times [2018-10-27 07:45:56,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:45:56,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:45:56,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:45:56,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:45:56,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:45:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:45:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 135 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 07:45:56,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:45:56,831 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:45:56,831 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-10-27 07:45:56,832 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], [2339], [2347], [2351], [2353], [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], [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], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:45:56,841 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:45:56,841 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:45:57,106 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:45:57,106 INFO L272 AbstractInterpreter]: Visited 156 different actions 305 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:45:57,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:45:57,131 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:45:57,459 INFO L227 lantSequenceWeakener]: Weakened 294 states. On average, predicates are now at 75.79% of their original sizes. [2018-10-27 07:45:57,459 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:45:57,652 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-10-27 07:45:57,652 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:45:57,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:45:57,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:45:57,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:45:57,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:45:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:45:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:45:57,654 INFO L87 Difference]: Start difference. First operand 10281 states and 15760 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown