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/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:43:37,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:43:37,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:43:37,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:43:37,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:43:37,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:43:37,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:43:37,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:43:37,167 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:43:37,168 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:43:37,170 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:43:37,171 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:43:37,172 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:43:37,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:43:37,176 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:43:37,177 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:43:37,183 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:43:37,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:43:37,192 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:43:37,196 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:43:37,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:43:37,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:43:37,204 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:43:37,204 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:43:37,205 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:43:37,206 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:43:37,207 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:43:37,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:43:37,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:43:37,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:43:37,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:43:37,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:43:37,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:43:37,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:43:37,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:43:37,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:43:37,219 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 08:43:37,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:43:37,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:43:37,249 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:43:37,249 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:43:37,249 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:43:37,250 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:43:37,250 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:43:37,250 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:43:37,250 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:43:37,251 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:43:37,251 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:43:37,251 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:43:37,251 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:43:37,251 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:43:37,252 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:43:37,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:43:37,253 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:43:37,254 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:43:37,254 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:43:37,254 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:43:37,254 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:43:37,255 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:43:37,255 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:43:37,255 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:43:37,255 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:43:37,256 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:43:37,256 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:43:37,256 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:43:37,256 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:43:37,257 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:43:37,257 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:43:37,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:43:37,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:43:37,257 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:43:37,258 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:43:37,258 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:43:37,329 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:43:37,345 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:43:37,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:43:37,352 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:43:37,352 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:43:37,353 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-27 08:43:37,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4c6b562e/dc2c0d7c1b7a40ad83ef016ca93f7833/FLAGb18f7adb1 [2018-10-27 08:43:38,257 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:43:38,259 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-27 08:43:38,291 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4c6b562e/dc2c0d7c1b7a40ad83ef016ca93f7833/FLAGb18f7adb1 [2018-10-27 08:43:38,308 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4c6b562e/dc2c0d7c1b7a40ad83ef016ca93f7833 [2018-10-27 08:43:38,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:43:38,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:43:38,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:43:38,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:43:38,328 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:43:38,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:43:38" (1/1) ... [2018-10-27 08:43:38,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:38, skipping insertion in model container [2018-10-27 08:43:38,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:43:38" (1/1) ... [2018-10-27 08:43:38,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:43:38,480 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:43:39,650 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:43:39,655 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:43:40,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:43:40,140 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:43:40,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40 WrapperNode [2018-10-27 08:43:40,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:43:40,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:43:40,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:43:40,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:43:40,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:43:40,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:43:40,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:43:40,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:43:40,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (1/1) ... [2018-10-27 08:43:40,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:43:40,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:43:40,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:43:40,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:43:40,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (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 08:43:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:43:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:43:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:43:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:43:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:43:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:43:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:43:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:43:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:43:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:43:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:43:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:43:50,664 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:43:50,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:43:50 BoogieIcfgContainer [2018-10-27 08:43:50,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:43:50,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:43:50,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:43:50,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:43:50,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:43:38" (1/3) ... [2018-10-27 08:43:50,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:43:50, skipping insertion in model container [2018-10-27 08:43:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:40" (2/3) ... [2018-10-27 08:43:50,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316b4788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:43:50, skipping insertion in model container [2018-10-27 08:43:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:43:50" (3/3) ... [2018-10-27 08:43:50,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-10-27 08:43:50,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:43:50,695 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:43:50,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:43:50,766 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:43:50,766 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:43:50,766 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:43:50,766 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:43:50,767 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:43:50,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:43:50,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:43:50,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:43:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:43:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-27 08:43:50,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:43:50,820 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:43:50,822 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:43:50,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:43:50,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-10-27 08:43:50,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:43:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:43:50,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:43:50,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:43:50,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:43:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:43:51,397 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 08:43:51,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:43:51,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:43:51,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:43:51,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:43:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:43:51,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:43:51,428 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-27 08:44:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:02,767 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-27 08:44:02,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:44:02,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-27 08:44:02,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:02,810 INFO L225 Difference]: With dead ends: 2974 [2018-10-27 08:44:02,810 INFO L226 Difference]: Without dead ends: 2193 [2018-10-27 08:44:02,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-27 08:44:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-27 08:44:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 08:44:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-27 08:44:02,999 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-10-27 08:44:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:03,001 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-27 08:44:03,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:44:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-27 08:44:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 08:44:03,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:03,010 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:03,010 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:03,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:03,011 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-10-27 08:44:03,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:03,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:03,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:03,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:03,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:03,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:03,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:44:03,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:03,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:44:03,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:44:03,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:44:03,245 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-27 08:44:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:12,513 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-27 08:44:12,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:44:12,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-27 08:44:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:12,542 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 08:44:12,542 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 08:44:12,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:44:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 08:44:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-27 08:44:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-27 08:44:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-27 08:44:12,653 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-10-27 08:44:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:12,655 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-27 08:44:12,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:44:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-27 08:44:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 08:44:12,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:12,668 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:12,668 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:12,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:12,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-10-27 08:44:12,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:12,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:12,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:12,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:12,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:12,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:12,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:44:12,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:12,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:44:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:44:12,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:44:12,989 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-27 08:44:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:18,222 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-10-27 08:44:18,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:44:18,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 08:44:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:18,249 INFO L225 Difference]: With dead ends: 7357 [2018-10-27 08:44:18,249 INFO L226 Difference]: Without dead ends: 4433 [2018-10-27 08:44:18,259 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 08:44:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-10-27 08:44:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-10-27 08:44:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-10-27 08:44:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-10-27 08:44:18,378 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-10-27 08:44:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:18,378 INFO L481 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-10-27 08:44:18,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:44:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-10-27 08:44:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 08:44:18,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:18,382 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:18,383 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:18,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-10-27 08:44:18,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:18,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:18,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:18,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:18,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:18,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:44:18,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:18,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:44:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:44:18,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:18,600 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-10-27 08:44:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:25,226 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-10-27 08:44:25,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:44:25,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-27 08:44:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:25,294 INFO L225 Difference]: With dead ends: 17356 [2018-10-27 08:44:25,294 INFO L226 Difference]: Without dead ends: 12962 [2018-10-27 08:44:25,324 INFO L605 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 [2018-10-27 08:44:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-10-27 08:44:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-10-27 08:44:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-10-27 08:44:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-10-27 08:44:25,638 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-10-27 08:44:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:25,639 INFO L481 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-10-27 08:44:25,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:44:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-10-27 08:44:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-27 08:44:25,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:25,648 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:25,648 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:25,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-10-27 08:44:25,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:25,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:25,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:25,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:25,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:26,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:44:26,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:44:26,016 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-27 08:44:26,018 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:44:26,072 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:44:26,073 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:44:26,618 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:44:26,620 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:44:26,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:26,662 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:44:27,343 INFO L227 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 78.16% of their original sizes. [2018-10-27 08:44:27,343 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:44:27,608 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-10-27 08:44:27,609 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:44:27,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:44:27,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:44:27,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:27,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:44:27,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:44:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:44:27,612 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 6 states. [2018-10-27 08:46:29,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:46:29,108 INFO L93 Difference]: Finished difference Result 26623 states and 33475 transitions. [2018-10-27 08:46:29,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:46:29,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2018-10-27 08:46:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:46:29,157 INFO L225 Difference]: With dead ends: 26623 [2018-10-27 08:46:29,158 INFO L226 Difference]: Without dead ends: 13667 [2018-10-27 08:46:29,199 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 284 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 08:46:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-10-27 08:46:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13665. [2018-10-27 08:46:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13665 states. [2018-10-27 08:46:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17087 transitions. [2018-10-27 08:46:29,488 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17087 transitions. Word has length 289 [2018-10-27 08:46:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:46:29,488 INFO L481 AbstractCegarLoop]: Abstraction has 13665 states and 17087 transitions. [2018-10-27 08:46:29,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:46:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17087 transitions. [2018-10-27 08:46:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-27 08:46:29,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:46:29,504 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:29,505 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:46:29,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1575146157, now seen corresponding path program 1 times [2018-10-27 08:46:29,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:46:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:29,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:46:29,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:29,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:46:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:46:30,095 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:46:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 251 proven. 249 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:46:30,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:46:30,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:46:30,658 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-10-27 08:46:30,659 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:46:30,667 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:46:30,668 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:46:30,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:46:30,921 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:46:30,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:30,948 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:46:31,460 INFO L227 lantSequenceWeakener]: Weakened 473 states. On average, predicates are now at 77.85% of their original sizes. [2018-10-27 08:46:31,461 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:46:31,990 INFO L415 sIntCurrentIteration]: We unified 475 AI predicates to 475 [2018-10-27 08:46:31,990 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:46:31,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:46:31,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:46:31,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:46:31,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:46:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:46:31,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:46:31,993 INFO L87 Difference]: Start difference. First operand 13665 states and 17087 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown