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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:42:49,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:42:49,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:42:49,109 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:42:49,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:42:49,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:42:49,112 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:42:49,114 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:42:49,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:42:49,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:42:49,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:42:49,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:42:49,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:42:49,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:42:49,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:42:49,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:42:49,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:42:49,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:42:49,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:42:49,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:42:49,138 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:42:49,139 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:42:49,141 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:42:49,142 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:42:49,142 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:42:49,145 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:42:49,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:42:49,147 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:42:49,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:42:49,150 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:42:49,150 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:42:49,151 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:42:49,151 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:42:49,152 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:42:49,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:42:49,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:42:49,156 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:42:49,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:42:49,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:42:49,182 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:42:49,182 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:42:49,182 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:42:49,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:42:49,183 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:42:49,183 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:42:49,183 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:42:49,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:42:49,183 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:42:49,184 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:42:49,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:42:49,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:42:49,185 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:42:49,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:42:49,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:42:49,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:42:49,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:42:49,186 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:42:49,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:42:49,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:42:49,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:42:49,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:42:49,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:42:49,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:42:49,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:42:49,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:42:49,188 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:42:49,188 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:42:49,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:42:49,188 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:42:49,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:42:49,189 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:42:49,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:42:49,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:42:49,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:42:49,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:42:49,267 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:42:49,268 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-10-27 03:42:49,336 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a3f9027b/7be36ebc6c7540cb97561ab66e1e3e41/FLAGf578529eb [2018-10-27 03:42:50,126 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:42:50,128 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-10-27 03:42:50,156 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a3f9027b/7be36ebc6c7540cb97561ab66e1e3e41/FLAGf578529eb [2018-10-27 03:42:50,176 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a3f9027b/7be36ebc6c7540cb97561ab66e1e3e41 [2018-10-27 03:42:50,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:42:50,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:42:50,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:42:50,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:42:50,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:42:50,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:42:50" (1/1) ... [2018-10-27 03:42:50,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:50, skipping insertion in model container [2018-10-27 03:42:50,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:42:50" (1/1) ... [2018-10-27 03:42:50,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:42:50,376 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:42:51,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:42:51,535 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:42:52,217 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:42:52,247 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:42:52,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52 WrapperNode [2018-10-27 03:42:52,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:42:52,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:42:52,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:42:52,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:42:52,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:42:52,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:42:52,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:42:52,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:42:52,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (1/1) ... [2018-10-27 03:42:52,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:42:52,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:42:52,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:42:52,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:42:52,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (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 03:42:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:42:53,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:42:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:42:53,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:42:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:42:53,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:42:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:42:53,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:42:53,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:42:53,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:42:53,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:42:53,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:43:02,607 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:43:02,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:02 BoogieIcfgContainer [2018-10-27 03:43:02,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:43:02,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:43:02,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:43:02,615 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:43:02,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:42:50" (1/3) ... [2018-10-27 03:43:02,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:02, skipping insertion in model container [2018-10-27 03:43:02,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:42:52" (2/3) ... [2018-10-27 03:43:02,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:02, skipping insertion in model container [2018-10-27 03:43:02,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:02" (3/3) ... [2018-10-27 03:43:02,619 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-10-27 03:43:02,629 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:43:02,640 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:43:02,659 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:43:02,710 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:43:02,710 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:43:02,710 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:43:02,710 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:43:02,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:43:02,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:43:02,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:43:02,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:43:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 03:43:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-27 03:43:02,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:02,771 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] [2018-10-27 03:43:02,774 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:02,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:02,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-10-27 03:43:02,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:02,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:02,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:02,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:02,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:03,335 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:43:03,435 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 03:43:03,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:43:03,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:43:03,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:43:03,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:43:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:43:03,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:43:03,470 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 03:43:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:43:10,932 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 03:43:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:43:10,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-27 03:43:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:43:10,974 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 03:43:10,974 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 03:43:10,989 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 03:43:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 03:43:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 03:43:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 03:43:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 03:43:11,165 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-10-27 03:43:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:43:11,165 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 03:43:11,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:43:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 03:43:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 03:43:11,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:11,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:43:11,176 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:11,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-10-27 03:43:11,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:11,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:11,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:11,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:11,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:11,512 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:43:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:43:11,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:43:11,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:43:11,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:43:11,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:43:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:43:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:43:11,565 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 03:43:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:43:23,592 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-27 03:43:23,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:43:23,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 03:43:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:43:23,614 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 03:43:23,615 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 03:43:23,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:43:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 03:43:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-27 03:43:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 03:43:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-10-27 03:43:23,708 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-10-27 03:43:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:43:23,709 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-10-27 03:43:23,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:43:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-10-27 03:43:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 03:43:23,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:23,713 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, 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 03:43:23,714 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:23,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:23,714 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-10-27 03:43:23,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:23,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:23,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:23,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:23,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:43:23,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:43:23,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:43:23,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:43:23,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:43:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:43:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:43:23,940 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-10-27 03:43:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:43:35,144 INFO L93 Difference]: Finished difference Result 10270 states and 17665 transitions. [2018-10-27 03:43:35,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:43:35,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-27 03:43:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:43:35,189 INFO L225 Difference]: With dead ends: 10270 [2018-10-27 03:43:35,190 INFO L226 Difference]: Without dead ends: 7348 [2018-10-27 03:43:35,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 03:43:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2018-10-27 03:43:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 7270. [2018-10-27 03:43:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7270 states. [2018-10-27 03:43:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10826 transitions. [2018-10-27 03:43:35,416 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10826 transitions. Word has length 146 [2018-10-27 03:43:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:43:35,417 INFO L481 AbstractCegarLoop]: Abstraction has 7270 states and 10826 transitions. [2018-10-27 03:43:35,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:43:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10826 transitions. [2018-10-27 03:43:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 03:43:35,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:35,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:35,422 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:35,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-10-27 03:43:35,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:35,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:35,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:35,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:35,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:43:35,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:43:35,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:43:35,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:43:35,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:43:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:43:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:43:35,670 INFO L87 Difference]: Start difference. First operand 7270 states and 10826 transitions. Second operand 4 states. [2018-10-27 03:43:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:43:42,544 INFO L93 Difference]: Finished difference Result 25200 states and 39401 transitions. [2018-10-27 03:43:42,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:43:42,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-10-27 03:43:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:43:42,648 INFO L225 Difference]: With dead ends: 25200 [2018-10-27 03:43:42,648 INFO L226 Difference]: Without dead ends: 17936 [2018-10-27 03:43:42,698 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 03:43:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17936 states. [2018-10-27 03:43:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17936 to 17931. [2018-10-27 03:43:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17931 states. [2018-10-27 03:43:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17931 states to 17931 states and 25605 transitions. [2018-10-27 03:43:43,190 INFO L78 Accepts]: Start accepts. Automaton has 17931 states and 25605 transitions. Word has length 176 [2018-10-27 03:43:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:43:43,191 INFO L481 AbstractCegarLoop]: Abstraction has 17931 states and 25605 transitions. [2018-10-27 03:43:43,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:43:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17931 states and 25605 transitions. [2018-10-27 03:43:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-27 03:43:43,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:43:43,228 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:43,228 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:43:43,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1372356006, now seen corresponding path program 1 times [2018-10-27 03:43:43,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:43:43,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:43,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:43:43,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:43:43,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:43:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:43:43,588 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:43:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 186 proven. 191 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-27 03:43:43,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:43:43,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:43:43,944 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 404 with the following transitions: [2018-10-27 03:43:43,947 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], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 03:43:44,023 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:43:44,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:43:47,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:43:47,205 INFO L272 AbstractInterpreter]: Visited 139 different actions 139 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:43:47,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:43:47,215 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:43:50,270 INFO L227 lantSequenceWeakener]: Weakened 392 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-27 03:43:50,271 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:43:50,636 INFO L415 sIntCurrentIteration]: We unified 402 AI predicates to 402 [2018-10-27 03:43:50,637 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:43:50,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:43:50,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:43:50,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:43:50,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:43:50,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:43:50,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:43:50,640 INFO L87 Difference]: Start difference. First operand 17931 states and 25605 transitions. Second operand 7 states. [2018-10-27 03:43:52,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:45:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:45:33,942 INFO L93 Difference]: Finished difference Result 36561 states and 51963 transitions. [2018-10-27 03:45:33,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:45:33,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2018-10-27 03:45:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:45:34,006 INFO L225 Difference]: With dead ends: 36561 [2018-10-27 03:45:34,006 INFO L226 Difference]: Without dead ends: 18636 [2018-10-27 03:45:34,046 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:45:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18636 states. [2018-10-27 03:45:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18636 to 18634. [2018-10-27 03:45:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18634 states. [2018-10-27 03:45:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 26320 transitions. [2018-10-27 03:45:34,439 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 26320 transitions. Word has length 403 [2018-10-27 03:45:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:45:34,439 INFO L481 AbstractCegarLoop]: Abstraction has 18634 states and 26320 transitions. [2018-10-27 03:45:34,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:45:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 26320 transitions. [2018-10-27 03:45:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-27 03:45:34,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:45:34,477 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:45:34,478 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:45:34,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:34,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2000716113, now seen corresponding path program 1 times [2018-10-27 03:45:34,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:45:34,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:34,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:45:34,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:45:34,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:45:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:45:35,102 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:45:35,304 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:45:35,531 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:45:35,949 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 03:45:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 312 proven. 433 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-27 03:45:36,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:45:36,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:45:36,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-10-27 03:45:36,422 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], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2268], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [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 03:45:36,438 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:45:36,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:45:46,918 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:45:46,918 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 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 03:45:46,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:45:46,926 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:45:52,572 INFO L227 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-27 03:45:52,573 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 03:46:29,692 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:46:29,697 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:46:29,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:46:29 BoogieIcfgContainer [2018-10-27 03:46:29,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:46:29,699 INFO L168 Benchmark]: Toolchain (without parser) took 219508.54 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -58.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,700 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:46:29,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2055.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 463.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,702 INFO L168 Benchmark]: Boogie Preprocessor took 241.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,703 INFO L168 Benchmark]: RCFGBuilder took 9654.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.0 MB). Peak memory consumption was 511.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,704 INFO L168 Benchmark]: TraceAbstraction took 207087.04 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 184.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:46:29,709 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2055.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 463.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 241.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9654.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.0 MB). Peak memory consumption was 511.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207087.04 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 184.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was analyzing trace of length 566 with TraceHistMax 5,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 207.0s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 141.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1361 SDtfs, 9188 SDslu, 791 SDs, 0 SdLazy, 18101 SolverSat, 5526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 432 GetRequests, 407 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18634occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9970294355927625 AbsIntWeakeningRatio, 0.07246376811594203 AbsIntAvgWeakeningVarsNumRemoved, 434.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 932 ConstructedInterpolants, 0 QuantifiedInterpolants, 571580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 472/663 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown