java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:25:12,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:25:12,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:25:12,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:25:12,810 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:25:12,811 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:25:12,812 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:25:12,814 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:25:12,816 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:25:12,817 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:25:12,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:25:12,818 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:25:12,819 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:25:12,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:25:12,821 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:25:12,822 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:25:12,822 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:25:12,824 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:25:12,826 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:25:12,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:25:12,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:25:12,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:25:12,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:25:12,845 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 21:25:12,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:25:12,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:25:12,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:25:12,885 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:25:12,885 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:25:12,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:25:12,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:25:12,886 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:25:12,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:25:12,886 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:25:12,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:25:12,887 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:25:12,891 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:25:12,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:25:12,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:25:12,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:25:12,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:25:12,892 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:25:12,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:25:12,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:25:12,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:25:12,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:25:12,893 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:25:12,895 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:25:12,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:25:12,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:25:12,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:25:12,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:25:12,896 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:25:12,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:25:12,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:25:12,897 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:25:12,897 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:25:12,897 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:25:12,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:25:12,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:25:12,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:25:12,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:25:12,985 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:25:12,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-24 21:25:13,050 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34492102a/ac8c93ed8d7e4679a506d53fe3c25acb/FLAGcee87bb45 [2018-10-24 21:25:13,757 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:25:13,757 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-24 21:25:13,794 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34492102a/ac8c93ed8d7e4679a506d53fe3c25acb/FLAGcee87bb45 [2018-10-24 21:25:13,811 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34492102a/ac8c93ed8d7e4679a506d53fe3c25acb [2018-10-24 21:25:13,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:25:13,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:25:13,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:25:13,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:25:13,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:25:13,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:25:13" (1/1) ... [2018-10-24 21:25:13,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:13, skipping insertion in model container [2018-10-24 21:25:13,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:25:13" (1/1) ... [2018-10-24 21:25:13,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:25:13,995 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:25:15,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:25:15,312 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:25:15,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:25:15,988 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:25:15,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15 WrapperNode [2018-10-24 21:25:15,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:25:15,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:25:15,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:25:15,990 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:25:16,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:25:16,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:25:16,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:25:16,489 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:25:16,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (1/1) ... [2018-10-24 21:25:16,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:25:16,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:25:16,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:25:16,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:25:16,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (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 21:25:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:25:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:25:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:25:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:25:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:25:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:25:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:25:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:25:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:25:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:25:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:25:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:25:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:25:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:25:28,688 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:25:28,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:25:28 BoogieIcfgContainer [2018-10-24 21:25:28,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:25:28,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:25:28,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:25:28,695 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:25:28,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:25:13" (1/3) ... [2018-10-24 21:25:28,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:25:28, skipping insertion in model container [2018-10-24 21:25:28,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:25:15" (2/3) ... [2018-10-24 21:25:28,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:25:28, skipping insertion in model container [2018-10-24 21:25:28,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:25:28" (3/3) ... [2018-10-24 21:25:28,699 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-10-24 21:25:28,709 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:25:28,723 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:25:28,741 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:25:28,792 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:25:28,792 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:25:28,793 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:25:28,793 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:25:28,793 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:25:28,793 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:25:28,793 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:25:28,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:25:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:25:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 21:25:28,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:28,870 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] [2018-10-24 21:25:28,872 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:28,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:28,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2139876300, now seen corresponding path program 1 times [2018-10-24 21:25:28,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:28,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:28,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:28,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:28,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:29,391 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:25:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:29,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:29,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:25:29,519 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:29,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:25:29,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:25:29,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:25:29,549 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:25:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:39,655 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:25:39,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:25:39,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-24 21:25:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:39,703 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:25:39,704 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:25:39,716 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 [2018-10-24 21:25:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:25:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:25:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:25:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 21:25:39,927 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-10-24 21:25:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:39,928 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 21:25:39,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:25:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 21:25:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 21:25:39,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:39,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:39,935 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:39,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:39,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1482898002, now seen corresponding path program 1 times [2018-10-24 21:25:39,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:39,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:39,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:39,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:39,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:40,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:40,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:25:40,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:40,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:25:40,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:25:40,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:25:40,272 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 21:25:51,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:51,680 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 21:25:51,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:25:51,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 21:25:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:51,705 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 21:25:51,705 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 21:25:51,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:25:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 21:25:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 21:25:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 21:25:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 21:25:51,819 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 114 [2018-10-24 21:25:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:51,820 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 21:25:51,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:25:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 21:25:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 21:25:51,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:51,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:51,824 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:51,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:51,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1633492773, now seen corresponding path program 1 times [2018-10-24 21:25:51,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:51,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:51,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:51,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:51,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:52,085 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:25:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:52,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:52,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:25:52,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:52,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:25:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:25:52,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:25:52,486 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-24 21:26:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:04,985 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-24 21:26:04,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:26:04,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-24 21:26:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:05,038 INFO L225 Difference]: With dead ends: 11148 [2018-10-24 21:26:05,039 INFO L226 Difference]: Without dead ends: 7968 [2018-10-24 21:26:05,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:26:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-24 21:26:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-24 21:26:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-24 21:26:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-24 21:26:05,285 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 119 [2018-10-24 21:26:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:05,285 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-24 21:26:05,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-24 21:26:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 21:26:05,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:05,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:26:05,289 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:05,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:05,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1525604427, now seen corresponding path program 1 times [2018-10-24 21:26:05,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:05,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:05,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:05,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:05,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:05,533 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:26:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:26:05,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:26:05,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:26:05,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:26:05,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:26:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:26:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:26:05,862 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-24 21:26:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:18,407 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-10-24 21:26:18,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:26:18,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 21:26:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:18,487 INFO L225 Difference]: With dead ends: 22224 [2018-10-24 21:26:18,487 INFO L226 Difference]: Without dead ends: 14306 [2018-10-24 21:26:18,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:26:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-10-24 21:26:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-10-24 21:26:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-24 21:26:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-10-24 21:26:18,888 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 127 [2018-10-24 21:26:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:18,888 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-10-24 21:26:18,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-10-24 21:26:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 21:26:18,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:18,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:26:18,898 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:18,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash -654123146, now seen corresponding path program 1 times [2018-10-24 21:26:18,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:18,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:18,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:26:19,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:26:19,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:26:19,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:26:19,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:26:19,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:26:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:26:19,304 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-10-24 21:26:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:40,338 INFO L93 Difference]: Finished difference Result 56456 states and 95976 transitions. [2018-10-24 21:26:40,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:26:40,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-24 21:26:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:40,585 INFO L225 Difference]: With dead ends: 56456 [2018-10-24 21:26:40,586 INFO L226 Difference]: Without dead ends: 42243 [2018-10-24 21:26:40,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:26:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2018-10-24 21:26:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42003. [2018-10-24 21:26:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42003 states. [2018-10-24 21:26:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42003 states to 42003 states and 62980 transitions. [2018-10-24 21:26:42,077 INFO L78 Accepts]: Start accepts. Automaton has 42003 states and 62980 transitions. Word has length 144 [2018-10-24 21:26:42,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:42,077 INFO L481 AbstractCegarLoop]: Abstraction has 42003 states and 62980 transitions. [2018-10-24 21:26:42,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 42003 states and 62980 transitions. [2018-10-24 21:26:42,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 21:26:42,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:42,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:26:42,085 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:42,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash -271525473, now seen corresponding path program 1 times [2018-10-24 21:26:42,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:42,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:42,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:42,376 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:26:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:26:43,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:26:43,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:26:43,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:26:43,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:26:43,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:26:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:26:43,091 INFO L87 Difference]: Start difference. First operand 42003 states and 62980 transitions. Second operand 6 states. [2018-10-24 21:26:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:26:56,159 INFO L93 Difference]: Finished difference Result 104625 states and 165914 transitions. [2018-10-24 21:26:56,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:26:56,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-24 21:26:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:26:56,399 INFO L225 Difference]: With dead ends: 104625 [2018-10-24 21:26:56,400 INFO L226 Difference]: Without dead ends: 62628 [2018-10-24 21:26:56,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:26:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62628 states. [2018-10-24 21:26:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62628 to 62378. [2018-10-24 21:26:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62378 states. [2018-10-24 21:26:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62378 states to 62378 states and 87792 transitions. [2018-10-24 21:26:57,889 INFO L78 Accepts]: Start accepts. Automaton has 62378 states and 87792 transitions. Word has length 165 [2018-10-24 21:26:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:26:57,890 INFO L481 AbstractCegarLoop]: Abstraction has 62378 states and 87792 transitions. [2018-10-24 21:26:57,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:26:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 62378 states and 87792 transitions. [2018-10-24 21:26:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 21:26:57,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:26:57,901 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:26:57,901 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:26:57,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:26:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash 708461889, now seen corresponding path program 1 times [2018-10-24 21:26:57,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:26:57,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:57,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:26:57,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:26:57,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:26:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:26:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:26:58,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:26:58,246 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:26:58,247 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-24 21:26:58,250 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2087], [2089], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:26:58,328 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:26:58,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:27:00,806 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:27:00,995 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:27:00,996 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:27:01,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:27:01,016 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:27:03,077 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 75.52% of their original sizes. [2018-10-24 21:27:03,078 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:27:03,646 INFO L413 sIntCurrentIteration]: We have 198 unified AI predicates [2018-10-24 21:27:03,647 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:27:03,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:27:03,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 21:27:03,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:27:03,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:27:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:27:03,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:27:03,649 INFO L87 Difference]: Start difference. First operand 62378 states and 87792 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 21:28:59,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:28:59,751 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:28:59,756 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:28:59,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:28:59 BoogieIcfgContainer [2018-10-24 21:28:59,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:28:59,758 INFO L168 Benchmark]: Toolchain (without parser) took 225934.60 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,759 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:28:59,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2163.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 498.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,762 INFO L168 Benchmark]: Boogie Preprocessor took 276.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,762 INFO L168 Benchmark]: RCFGBuilder took 11924.99 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 191.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -212.6 MB). Peak memory consumption was 681.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,763 INFO L168 Benchmark]: TraceAbstraction took 211066.23 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -545.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:28:59,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2163.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 498.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 276.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11924.99 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 191.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -212.6 MB). Peak memory consumption was 681.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211066.23 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -545.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (62378states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (39249 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 197.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1353 SDtfs, 21619 SDslu, 1159 SDs, 0 SdLazy, 36098 SolverSat, 8469 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 155.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 255 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62378occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995104895104895 AbsIntWeakeningRatio, 0.13636363636363635 AbsIntAvgWeakeningVarsNumRemoved, 1038.9141414141413 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 655 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 908 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 901 ConstructedInterpolants, 0 QuantifiedInterpolants, 574680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 236/310 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown