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/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:24:50,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:24:50,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:24:50,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:24:50,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:24:50,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:24:50,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:24:50,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:24:50,770 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:24:50,771 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:24:50,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:24:50,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:24:50,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:24:50,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:24:50,780 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:24:50,781 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:24:50,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:24:50,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:24:50,787 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:24:50,790 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:24:50,791 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:24:50,792 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:24:50,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:24:50,795 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:24:50,796 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:24:50,796 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:24:50,798 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:24:50,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:24:50,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:24:50,804 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:24:50,805 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:24:50,806 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:24:50,806 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:24:50,806 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:24:50,807 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:24:50,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:24:50,810 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 [2018-10-24 21:24:50,836 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:24:50,836 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:24:50,837 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:24:50,837 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:24:50,837 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:24:50,838 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:24:50,838 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:24:50,838 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:24:50,838 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:24:50,838 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:24:50,839 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:24:50,839 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:24:50,839 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:24:50,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:24:50,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:24:50,841 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:24:50,841 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:24:50,841 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:24:50,841 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:24:50,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:24:50,842 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:24:50,842 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:24:50,842 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:24:50,842 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:24:50,842 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:24:50,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:24:50,844 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:24:50,845 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:24:50,845 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:24:50,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:24:50,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:24:50,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:24:50,907 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:24:50,908 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:24:50,909 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-10-24 21:24:50,964 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68c251ecb/a170ee0670144cb6b380aca01871e2fc/FLAGe5fbd885c [2018-10-24 21:24:51,717 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:24:51,718 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-10-24 21:24:51,750 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68c251ecb/a170ee0670144cb6b380aca01871e2fc/FLAGe5fbd885c [2018-10-24 21:24:51,768 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68c251ecb/a170ee0670144cb6b380aca01871e2fc [2018-10-24 21:24:51,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:24:51,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:24:51,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:51,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:24:51,790 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:24:51,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:51" (1/1) ... [2018-10-24 21:24:51,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:51, skipping insertion in model container [2018-10-24 21:24:51,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:51" (1/1) ... [2018-10-24 21:24:51,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:24:51,984 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:24:53,207 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:53,212 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:24:53,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:53,933 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:24:53,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53 WrapperNode [2018-10-24 21:24:53,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:53,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:53,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:24:53,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:24:53,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:54,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:24:54,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:24:54,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:24:54,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (1/1) ... [2018-10-24 21:24:54,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:24:54,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:24:54,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:24:54,687 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:24:54,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (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 [2018-10-24 21:24:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:24:54,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:24:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:24:54,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:24:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:24:54,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:24:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:24:54,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:24:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:24:54,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:24:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:24:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:24:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:24:54,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:25:09,327 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:25:09,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:25:09 BoogieIcfgContainer [2018-10-24 21:25:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:25:09,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:25:09,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:25:09,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:25:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:24:51" (1/3) ... [2018-10-24 21:25:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:25:09, skipping insertion in model container [2018-10-24 21:25:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:53" (2/3) ... [2018-10-24 21:25:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:25:09, skipping insertion in model container [2018-10-24 21:25:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:25:09" (3/3) ... [2018-10-24 21:25:09,338 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-10-24 21:25:09,348 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:25:09,356 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:25:09,373 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:25:09,422 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:25:09,423 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:25:09,423 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:25:09,423 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:25:09,423 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:25:09,423 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:25:09,424 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:25:09,424 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:25:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:25:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 21:25:09,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:09,476 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] [2018-10-24 21:25:09,478 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:09,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-10-24 21:25:09,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:09,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:09,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:09,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:09,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:10,010 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:25:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:10,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:10,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:25:10,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:10,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:25:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:25:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:25:10,158 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:25:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:20,233 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:25:20,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:25:20,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-24 21:25:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:20,269 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:25:20,269 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:25:20,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:25:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:25:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:25:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:25:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-24 21:25:20,436 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-10-24 21:25:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:20,438 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-24 21:25:20,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:25:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-24 21:25:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 21:25:20,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:20,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:20,453 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:20,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-10-24 21:25:20,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:20,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:20,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:20,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:20,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:20,802 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:25:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:20,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:20,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:25:20,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:20,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:25:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:25:20,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:25:20,968 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-24 21:25:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:36,596 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-10-24 21:25:36,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:25:36,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 21:25:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:36,632 INFO L225 Difference]: With dead ends: 6330 [2018-10-24 21:25:36,632 INFO L226 Difference]: Without dead ends: 4732 [2018-10-24 21:25:36,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:25:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-10-24 21:25:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-10-24 21:25:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-24 21:25:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-10-24 21:25:36,787 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-10-24 21:25:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:36,788 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-10-24 21:25:36,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:25:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-10-24 21:25:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 21:25:36,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:36,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:36,799 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:36,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-10-24 21:25:36,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:36,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:36,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:36,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:36,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:37,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:37,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:25:37,013 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:37,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:25:37,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:25:37,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:25:37,015 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-10-24 21:25:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:45,580 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-10-24 21:25:45,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:25:45,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-24 21:25:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:45,643 INFO L225 Difference]: With dead ends: 14300 [2018-10-24 21:25:45,643 INFO L226 Difference]: Without dead ends: 9606 [2018-10-24 21:25:45,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:25:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-24 21:25:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-24 21:25:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-24 21:25:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-10-24 21:25:45,963 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 130 [2018-10-24 21:25:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:45,963 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-10-24 21:25:45,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:25:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-10-24 21:25:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 21:25:45,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:45,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:45,968 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:45,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-10-24 21:25:45,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:45,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:45,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:45,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:45,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:46,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:46,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:25:46,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:46,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:25:46,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:25:46,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:25:46,492 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-10-24 21:26:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:07,257 INFO L93 Difference]: Finished difference Result 38639 states and 64070 transitions. [2018-10-24 21:26:07,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:26:07,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-24 21:26:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:07,418 INFO L225 Difference]: With dead ends: 38639 [2018-10-24 21:26:07,418 INFO L226 Difference]: Without dead ends: 29121 [2018-10-24 21:26:07,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:26:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29121 states. [2018-10-24 21:26:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29121 to 28923. [2018-10-24 21:26:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28923 states. [2018-10-24 21:26:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28923 states to 28923 states and 42611 transitions. [2018-10-24 21:26:08,324 INFO L78 Accepts]: Start accepts. Automaton has 28923 states and 42611 transitions. Word has length 153 [2018-10-24 21:26:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:08,325 INFO L481 AbstractCegarLoop]: Abstraction has 28923 states and 42611 transitions. [2018-10-24 21:26:08,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 28923 states and 42611 transitions. [2018-10-24 21:26:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 21:26:08,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:08,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:26:08,332 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:08,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-10-24 21:26:08,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:08,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:08,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:08,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:08,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:08,645 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:26:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:26:09,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:26:09,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:26:09,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:26:09,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:26:09,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:26:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:26:09,045 INFO L87 Difference]: Start difference. First operand 28923 states and 42611 transitions. Second operand 6 states. [2018-10-24 21:26:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:21,810 INFO L93 Difference]: Finished difference Result 77380 states and 121633 transitions. [2018-10-24 21:26:21,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:26:21,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-24 21:26:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:21,993 INFO L225 Difference]: With dead ends: 77380 [2018-10-24 21:26:21,993 INFO L226 Difference]: Without dead ends: 48463 [2018-10-24 21:26:22,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:26:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48463 states. [2018-10-24 21:26:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48463 to 48257. [2018-10-24 21:26:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48257 states. [2018-10-24 21:26:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48257 states to 48257 states and 68608 transitions. [2018-10-24 21:26:23,619 INFO L78 Accepts]: Start accepts. Automaton has 48257 states and 68608 transitions. Word has length 174 [2018-10-24 21:26:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:23,620 INFO L481 AbstractCegarLoop]: Abstraction has 48257 states and 68608 transitions. [2018-10-24 21:26:23,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 48257 states and 68608 transitions. [2018-10-24 21:26:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-24 21:26:23,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:23,634 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:26:23,634 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:23,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:23,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-10-24 21:26:23,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:23,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:23,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:23,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:23,636 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:23,943 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:26:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:26:24,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:26:24,311 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:26:24,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-24 21:26:24,314 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2159], [2161], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [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], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:26:24,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:26:24,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:26:28,599 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:26:30,352 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:26:30,354 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:26:30,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:30,388 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:26:33,399 INFO L232 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 75.58% of their original sizes. [2018-10-24 21:26:33,399 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:26:34,043 INFO L413 sIntCurrentIteration]: We have 243 unified AI predicates [2018-10-24 21:26:34,044 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:26:34,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:26:34,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:26:34,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:26:34,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:26:34,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:26:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:26:34,047 INFO L87 Difference]: Start difference. First operand 48257 states and 68608 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 21:28:38,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:28:38,988 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:28:38,993 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:28:38,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:28:38 BoogieIcfgContainer [2018-10-24 21:28:38,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:28:38,996 INFO L168 Benchmark]: Toolchain (without parser) took 227214.11 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:28:38,998 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 21:28:38,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2149.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:38,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 479.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:39,000 INFO L168 Benchmark]: Boogie Preprocessor took 271.94 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:39,001 INFO L168 Benchmark]: RCFGBuilder took 14642.59 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -173.0 MB). Peak memory consumption was 670.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:39,002 INFO L168 Benchmark]: TraceAbstraction took 209665.15 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -425.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:28:39,008 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2149.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 479.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 271.94 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14642.59 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -173.0 MB). Peak memory consumption was 670.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209665.15 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -425.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (48257states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (61677 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1367 SDtfs, 19629 SDslu, 942 SDs, 0 SdLazy, 27329 SolverSat, 6885 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 149.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 289 GetRequests, 250 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48257occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960113960113959 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 1050.7078189300412 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 518 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 877 NumberOfCodeBlocks, 877 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 871 ConstructedInterpolants, 0 QuantifiedInterpolants, 614575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 257/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown