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/Problem16_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:19:18,711 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:19:18,713 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:19:18,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:19:18,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:19:18,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:19:18,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:19:18,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:19:18,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:19:18,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:19:18,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:19:18,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:19:18,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:19:18,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:19:18,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:19:18,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:19:18,740 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:19:18,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:19:18,744 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:19:18,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:19:18,747 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:19:18,748 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:19:18,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:19:18,751 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:19:18,751 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:19:18,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:19:18,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:19:18,754 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:19:18,755 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:19:18,756 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:19:18,756 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:19:18,757 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:19:18,757 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:19:18,757 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:19:18,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:19:18,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:19:18,760 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 03:19:18,776 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:19:18,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:19:18,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:19:18,781 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:19:18,781 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:19:18,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:19:18,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:19:18,781 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:19:18,782 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:19:18,785 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:19:18,785 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:19:18,785 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:19:18,786 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:19:18,786 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:19:18,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:19:18,788 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:19:18,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:19:18,788 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:19:18,788 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:19:18,788 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:19:18,789 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:19:18,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:19:18,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:19:18,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:19:18,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:19:18,791 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:19:18,791 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:19:18,791 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:19:18,791 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:19:18,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:19:18,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:19:18,793 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:19:18,793 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:19:18,793 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:19:18,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:19:18,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:19:18,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:19:18,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:19:18,878 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:19:18,879 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label11_true-unreach-call.c [2018-10-27 03:19:18,945 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cd66f7b4/a5064b0f0a3b40a9ba1681fac5bbcffc/FLAG1f9bdb98f [2018-10-27 03:19:19,597 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:19:19,599 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label11_true-unreach-call.c [2018-10-27 03:19:19,621 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cd66f7b4/a5064b0f0a3b40a9ba1681fac5bbcffc/FLAG1f9bdb98f [2018-10-27 03:19:19,642 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cd66f7b4/a5064b0f0a3b40a9ba1681fac5bbcffc [2018-10-27 03:19:19,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:19:19,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:19:19,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:19:19,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:19:19,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:19:19,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:19:19" (1/1) ... [2018-10-27 03:19:19,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:19, skipping insertion in model container [2018-10-27 03:19:19,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:19:19" (1/1) ... [2018-10-27 03:19:19,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:19:19,773 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:19:20,519 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:19:20,523 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:19:20,795 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:19:20,817 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:19:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20 WrapperNode [2018-10-27 03:19:20,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:19:20,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:19:20,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:19:20,819 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:19:20,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:20,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:19:21,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:19:21,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:19:21,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:19:21,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (1/1) ... [2018-10-27 03:19:21,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:19:21,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:19:21,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:19:21,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:19:21,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (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 03:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:19:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:19:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:19:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:19:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:19:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:19:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:19:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:19:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:19:21,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:19:27,653 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:19:27,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:19:27 BoogieIcfgContainer [2018-10-27 03:19:27,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:19:27,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:19:27,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:19:27,660 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:19:27,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:19:19" (1/3) ... [2018-10-27 03:19:27,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f5d439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:19:27, skipping insertion in model container [2018-10-27 03:19:27,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:19:20" (2/3) ... [2018-10-27 03:19:27,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f5d439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:19:27, skipping insertion in model container [2018-10-27 03:19:27,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:19:27" (3/3) ... [2018-10-27 03:19:27,664 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label11_true-unreach-call.c [2018-10-27 03:19:27,674 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:19:27,683 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:19:27,701 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:19:27,752 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:19:27,752 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:19:27,752 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:19:27,752 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:19:27,753 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:19:27,753 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:19:27,753 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:19:27,753 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:19:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 03:19:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-27 03:19:27,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:19:27,810 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] [2018-10-27 03:19:27,812 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:19:27,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:27,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1469466684, now seen corresponding path program 1 times [2018-10-27 03:19:27,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:19:27,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:27,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:19:27,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:27,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:19:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:19:28,303 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:19:28,452 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 03:19:28,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:19:28,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:19:28,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:19:28,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:19:28,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:19:28,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:19:28,492 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 03:19:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:19:33,259 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 03:19:33,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:19:33,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-10-27 03:19:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:19:33,287 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 03:19:33,287 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 03:19:33,298 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 03:19:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 03:19:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 03:19:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:19:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-27 03:19:33,407 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 62 [2018-10-27 03:19:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:19:33,407 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-27 03:19:33,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:19:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-27 03:19:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 03:19:33,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:19:33,417 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, 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 03:19:33,418 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:19:33,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:33,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2105085518, now seen corresponding path program 1 times [2018-10-27 03:19:33,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:19:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:33,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:19:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:33,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:19:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:19:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:19:33,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:19:33,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:19:33,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:19:33,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:19:33,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:19:33,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:19:33,678 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-27 03:19:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:19:40,367 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-27 03:19:40,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:19:40,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-27 03:19:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:19:40,383 INFO L225 Difference]: With dead ends: 2194 [2018-10-27 03:19:40,383 INFO L226 Difference]: Without dead ends: 1456 [2018-10-27 03:19:40,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:19:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-27 03:19:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-27 03:19:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-27 03:19:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-27 03:19:40,450 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 132 [2018-10-27 03:19:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:19:40,451 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-27 03:19:40,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:19:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-27 03:19:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 03:19:40,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:19:40,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:40,458 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:19:40,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1857215629, now seen corresponding path program 1 times [2018-10-27 03:19:40,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:19:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:40,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:19:40,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:40,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:19:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:19:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:19:40,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:19:40,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:19:40,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:19:40,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:19:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:19:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:19:40,726 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-27 03:19:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:19:45,688 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-27 03:19:45,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:19:45,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-27 03:19:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:19:45,714 INFO L225 Difference]: With dead ends: 3936 [2018-10-27 03:19:45,714 INFO L226 Difference]: Without dead ends: 2506 [2018-10-27 03:19:45,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:19:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-27 03:19:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-27 03:19:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-27 03:19:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-27 03:19:45,816 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 161 [2018-10-27 03:19:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:19:45,816 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-27 03:19:45,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:19:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-27 03:19:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-27 03:19:45,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:19:45,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:45,823 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:19:45,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2100358191, now seen corresponding path program 1 times [2018-10-27 03:19:45,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:19:45,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:45,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:19:45,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:45,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:19:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:19:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:19:46,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:19:46,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:19:46,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:19:46,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:19:46,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:19:46,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:19:46,172 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-27 03:19:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:19:49,610 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-27 03:19:49,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:19:49,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-10-27 03:19:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:19:49,635 INFO L225 Difference]: With dead ends: 6050 [2018-10-27 03:19:49,635 INFO L226 Difference]: Without dead ends: 3577 [2018-10-27 03:19:49,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:19:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-27 03:19:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-27 03:19:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-27 03:19:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-27 03:19:49,757 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 179 [2018-10-27 03:19:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:19:49,757 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-27 03:19:49,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:19:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-27 03:19:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-27 03:19:49,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:19:49,767 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 03:19:49,767 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:19:49,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2086748824, now seen corresponding path program 1 times [2018-10-27 03:19:49,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:19:49,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:49,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:19:49,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:19:49,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:19:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:19:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 122 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:19:50,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:19:50,215 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:19:50,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-27 03:19:50,218 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [575], [577], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:19:50,318 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:19:50,318 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:19:53,363 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:19:53,365 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:19:53,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:53,377 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:19:55,461 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 78.14% of their original sizes. [2018-10-27 03:19:55,462 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:19:56,086 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-10-27 03:19:56,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:19:56,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:19:56,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 03:19:56,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:19:56,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:19:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:19:56,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:19:56,090 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-27 03:19:59,947 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:20:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:20:25,693 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-27 03:20:25,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:20:25,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2018-10-27 03:20:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:20:25,710 INFO L225 Difference]: With dead ends: 7424 [2018-10-27 03:20:25,710 INFO L226 Difference]: Without dead ends: 3885 [2018-10-27 03:20:25,723 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:20:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-27 03:20:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-27 03:20:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-27 03:20:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-27 03:20:25,819 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 262 [2018-10-27 03:20:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:20:25,819 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-27 03:20:25,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 03:20:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-27 03:20:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-27 03:20:25,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:20:25,829 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:25,829 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:20:25,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:25,830 INFO L82 PathProgramCache]: Analyzing trace with hash -68374518, now seen corresponding path program 1 times [2018-10-27 03:20:25,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:20:25,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:25,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:20:25,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:20:25,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:20:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:20:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 237 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-27 03:20:26,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:20:26,249 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:20:26,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-10-27 03:20:26,250 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [575], [577], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:20:26,256 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:20:26,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:20:28,652 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:20:44,027 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:20:44,028 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:20:44,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:20:44,037 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:20:47,724 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.38% of their original sizes. [2018-10-27 03:20:47,725 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:22:50,900 INFO L415 sIntCurrentIteration]: We unified 353 AI predicates to 353 [2018-10-27 03:22:50,901 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:22:50,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:22:50,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-27 03:22:50,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:22:50,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 03:22:50,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 03:22:50,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-27 03:22:50,904 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 16 states. Received shutdown request... [2018-10-27 03:23:20,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 03:23:20,931 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:23:20,937 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:23:20,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:23:20 BoogieIcfgContainer [2018-10-27 03:23:20,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:23:20,938 INFO L168 Benchmark]: Toolchain (without parser) took 241282.05 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -58.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,939 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:23:20,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1159.83 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,942 INFO L168 Benchmark]: Boogie Preprocessor took 204.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,943 INFO L168 Benchmark]: RCFGBuilder took 6326.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 249.6 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,943 INFO L168 Benchmark]: TraceAbstraction took 233281.71 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 437.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 03:23:20,949 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1159.83 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 304.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 735.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6326.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 249.6 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233281.71 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 437.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 11 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (100 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 79.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 813 SDtfs, 6260 SDslu, 493 SDs, 0 SdLazy, 7982 SolverSat, 2378 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 655 GetRequests, 386 SyntacticMatches, 221 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 125.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960198036161071 AbsIntWeakeningRatio, 0.09446254071661238 AbsIntAvgWeakeningVarsNumRemoved, 398.7035830618893 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1150 NumberOfCodeBlocks, 1150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 992362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 574/742 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown