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/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:31:12,530 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:31:12,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:31:12,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:31:12,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:31:12,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:31:12,546 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:31:12,548 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:31:12,550 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:31:12,550 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:31:12,551 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:31:12,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:31:12,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:31:12,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:31:12,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:31:12,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:31:12,557 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:31:12,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:31:12,560 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:31:12,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:31:12,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:31:12,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:31:12,567 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:31:12,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:31:12,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:31:12,568 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:31:12,569 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:31:12,570 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:31:12,571 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:31:12,572 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:31:12,572 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:31:12,573 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:31:12,573 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:31:12,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:31:12,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:31:12,575 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:31:12,575 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 21:31:12,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:31:12,591 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:31:12,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:31:12,593 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:31:12,594 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:31:12,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:31:12,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:31:12,594 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:31:12,594 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:31:12,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:31:12,597 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:31:12,597 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:31:12,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:31:12,599 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:31:12,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:31:12,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:31:12,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:31:12,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:31:12,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:31:12,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:31:12,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:31:12,600 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:31:12,600 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:31:12,602 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:31:12,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:31:12,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:31:12,603 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:31:12,603 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:31:12,603 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:31:12,603 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:31:12,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:31:12,604 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:31:12,604 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:31:12,605 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:31:12,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:31:12,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:31:12,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:31:12,705 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:31:12,705 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:31:12,706 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-24 21:31:12,769 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96dec5744/40aabe9589884d3a9067864e8852a555/FLAGbfc956049 [2018-10-24 21:31:13,657 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:31:13,658 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-24 21:31:13,690 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96dec5744/40aabe9589884d3a9067864e8852a555/FLAGbfc956049 [2018-10-24 21:31:13,708 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96dec5744/40aabe9589884d3a9067864e8852a555 [2018-10-24 21:31:13,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:31:13,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:31:13,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:31:13,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:31:13,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:31:13,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:31:13" (1/1) ... [2018-10-24 21:31:13,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efdec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:13, skipping insertion in model container [2018-10-24 21:31:13,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:31:13" (1/1) ... [2018-10-24 21:31:13,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:31:13,905 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:31:15,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:31:15,291 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:31:16,010 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:31:16,048 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:31:16,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16 WrapperNode [2018-10-24 21:31:16,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:31:16,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:31:16,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:31:16,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:31:16,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:31:16,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:31:16,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:31:16,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:31:16,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (1/1) ... [2018-10-24 21:31:16,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:31:16,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:31:16,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:31:16,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:31:16,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (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 21:31:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:31:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:31:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:31:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:31:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:31:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:31:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:31:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:31:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:31:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:31:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:31:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:31:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:31:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:31:28,864 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:31:28,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:31:28 BoogieIcfgContainer [2018-10-24 21:31:28,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:31:28,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:31:28,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:31:28,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:31:28,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:31:13" (1/3) ... [2018-10-24 21:31:28,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20144a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:31:28, skipping insertion in model container [2018-10-24 21:31:28,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:16" (2/3) ... [2018-10-24 21:31:28,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20144a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:31:28, skipping insertion in model container [2018-10-24 21:31:28,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:31:28" (3/3) ... [2018-10-24 21:31:28,873 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-10-24 21:31:28,883 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:31:28,893 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:31:28,911 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:31:28,968 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:31:28,968 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:31:28,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:31:28,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:31:28,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:31:28,969 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:31:28,969 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:31:28,969 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:31:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:31:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 21:31:29,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:29,024 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] [2018-10-24 21:31:29,027 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:29,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1543659883, now seen corresponding path program 1 times [2018-10-24 21:31:29,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:29,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:29,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:29,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:29,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:29,639 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 21:31:29,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:29,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:31:29,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:29,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:31:29,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:31:29,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:31:29,667 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:31:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:44,154 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 21:31:44,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:31:44,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-24 21:31:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:44,203 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 21:31:44,203 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 21:31:44,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:31:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 21:31:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 21:31:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 21:31:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 21:31:44,406 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 45 [2018-10-24 21:31:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:44,407 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 21:31:44,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:31:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 21:31:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 21:31:44,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:44,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:44,415 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:44,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 369865390, now seen corresponding path program 1 times [2018-10-24 21:31:44,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:44,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:44,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:44,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:44,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:44,829 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:31:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:44,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:44,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:31:44,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:44,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:31:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:31:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:31:44,990 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 21:32:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:04,948 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 21:32:04,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:32:04,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-24 21:32:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:04,976 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 21:32:04,976 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 21:32:04,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:32:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 21:32:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 21:32:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 21:32:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-10-24 21:32:05,111 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 115 [2018-10-24 21:32:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:05,112 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-10-24 21:32:05,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:32:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-10-24 21:32:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 21:32:05,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:05,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:32:05,128 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:05,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:05,128 INFO L82 PathProgramCache]: Analyzing trace with hash 241566930, now seen corresponding path program 1 times [2018-10-24 21:32:05,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:05,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:05,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:05,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:05,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:05,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:05,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:32:05,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:05,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:32:05,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:32:05,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:32:05,383 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-10-24 21:32:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:21,863 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-10-24 21:32:21,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:32:21,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-24 21:32:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:21,905 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 21:32:21,906 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 21:32:21,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:32:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 21:32:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 21:32:22,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 21:32:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10524 transitions. [2018-10-24 21:32:22,120 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10524 transitions. Word has length 117 [2018-10-24 21:32:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:22,121 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10524 transitions. [2018-10-24 21:32:22,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:32:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10524 transitions. [2018-10-24 21:32:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 21:32:22,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:22,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:32:22,124 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:22,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:22,125 INFO L82 PathProgramCache]: Analyzing trace with hash 572519882, now seen corresponding path program 1 times [2018-10-24 21:32:22,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:22,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:22,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:22,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:22,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:22,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:22,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:32:22,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:22,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:32:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:32:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:22,362 INFO L87 Difference]: Start difference. First operand 7175 states and 10524 transitions. Second operand 4 states. [2018-10-24 21:32:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:35,161 INFO L93 Difference]: Finished difference Result 27672 states and 43309 transitions. [2018-10-24 21:32:35,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:32:35,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-10-24 21:32:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:35,316 INFO L225 Difference]: With dead ends: 27672 [2018-10-24 21:32:35,317 INFO L226 Difference]: Without dead ends: 20503 [2018-10-24 21:32:35,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20503 states. [2018-10-24 21:32:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20503 to 20464. [2018-10-24 21:32:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20464 states. [2018-10-24 21:32:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20464 states to 20464 states and 29133 transitions. [2018-10-24 21:32:35,984 INFO L78 Accepts]: Start accepts. Automaton has 20464 states and 29133 transitions. Word has length 161 [2018-10-24 21:32:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:35,985 INFO L481 AbstractCegarLoop]: Abstraction has 20464 states and 29133 transitions. [2018-10-24 21:32:35,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:32:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20464 states and 29133 transitions. [2018-10-24 21:32:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 21:32:35,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:35,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:32:35,990 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:35,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash 499433324, now seen corresponding path program 1 times [2018-10-24 21:32:35,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:35,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:35,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:35,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:35,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:36,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:36,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:32:36,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:36,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:32:36,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:32:36,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:36,265 INFO L87 Difference]: Start difference. First operand 20464 states and 29133 transitions. Second operand 4 states. [2018-10-24 21:32:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:46,238 INFO L93 Difference]: Finished difference Result 47390 states and 67717 transitions. [2018-10-24 21:32:46,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:32:46,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-10-24 21:32:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:46,358 INFO L225 Difference]: With dead ends: 47390 [2018-10-24 21:32:46,358 INFO L226 Difference]: Without dead ends: 26932 [2018-10-24 21:32:46,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:32:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26932 states. [2018-10-24 21:32:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26932 to 26931. [2018-10-24 21:32:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26931 states. [2018-10-24 21:32:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26931 states to 26931 states and 34383 transitions. [2018-10-24 21:32:47,031 INFO L78 Accepts]: Start accepts. Automaton has 26931 states and 34383 transitions. Word has length 166 [2018-10-24 21:32:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:47,032 INFO L481 AbstractCegarLoop]: Abstraction has 26931 states and 34383 transitions. [2018-10-24 21:32:47,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:32:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 26931 states and 34383 transitions. [2018-10-24 21:32:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-24 21:32:47,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:47,046 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:32:47,046 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:47,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:47,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2012871233, now seen corresponding path program 1 times [2018-10-24 21:32:47,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:47,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:47,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:47,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:47,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:47,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:32:47,879 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:32:47,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-24 21:32:47,886 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2887], [2889], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3598], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:32:48,008 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:32:48,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:32:58,624 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:32:59,201 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:32:59,204 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:32:59,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:59,249 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:33:05,596 INFO L232 lantSequenceWeakener]: Weakened 308 states. On average, predicates are now at 71.36% of their original sizes. [2018-10-24 21:33:05,596 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:33:07,312 INFO L413 sIntCurrentIteration]: We have 330 unified AI predicates [2018-10-24 21:33:07,313 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:33:07,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:33:07,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 21:33:07,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:33:07,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 21:33:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 21:33:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:33:07,315 INFO L87 Difference]: Start difference. First operand 26931 states and 34383 transitions. Second operand 12 states. Received shutdown request... [2018-10-24 21:34:54,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 21:34:54,112 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:34:54,119 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:34:54,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:34:54 BoogieIcfgContainer [2018-10-24 21:34:54,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:34:54,120 INFO L168 Benchmark]: Toolchain (without parser) took 220400.25 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,122 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:34:54,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2326.67 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 570.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 816.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,124 INFO L168 Benchmark]: Boogie Preprocessor took 344.08 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,125 INFO L168 Benchmark]: RCFGBuilder took 11900.15 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 181.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,126 INFO L168 Benchmark]: TraceAbstraction took 205253.64 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -318.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:34:54,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2326.67 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 570.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 816.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 344.08 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11900.15 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 181.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.8 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205253.64 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -318.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (26931states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (2586 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3900 SDtfs, 14629 SDslu, 2332 SDs, 0 SdLazy, 23664 SolverSat, 6807 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 132.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 369 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26931occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9971841491841489 AbsIntWeakeningRatio, 0.09090909090909091 AbsIntAvgWeakeningVarsNumRemoved, 24.69090909090909 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 1019 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 929 ConstructedInterpolants, 0 QuantifiedInterpolants, 627665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 345/347 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown