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/Problem03_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:39:11,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:39:11,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:39:11,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:39:11,896 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:39:11,897 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:39:11,899 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:39:11,901 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:39:11,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:39:11,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:39:11,904 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:39:11,904 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:39:11,905 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:39:11,906 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:39:11,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:39:11,909 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:39:11,910 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:39:11,914 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:39:11,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:39:11,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:39:11,921 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:39:11,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:39:11,925 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:39:11,933 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 [2018-10-23 23:39:11,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:39:11,958 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:39:11,960 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:39:11,960 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:39:11,960 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:39:11,960 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:39:11,960 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:39:11,961 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:39:11,961 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:39:11,961 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:39:11,962 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:39:11,962 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:39:11,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:39:11,963 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:39:11,963 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:39:11,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:39:11,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:39:11,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:39:11,964 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:39:11,965 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:39:11,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:39:11,966 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:39:11,966 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:39:11,966 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:39:11,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:39:11,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:39:11,967 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:39:11,967 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:39:11,967 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:39:11,968 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:39:11,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:39:11,968 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:39:11,968 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:39:11,968 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:39:12,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:39:12,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:39:12,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:39:12,071 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:39:12,072 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:39:12,072 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-10-23 23:39:12,137 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d89a2543a/a01153c20d644b0284a093b948c577e5/FLAGd75401e8d [2018-10-23 23:39:12,788 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:39:12,789 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-10-23 23:39:12,811 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d89a2543a/a01153c20d644b0284a093b948c577e5/FLAGd75401e8d [2018-10-23 23:39:12,833 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d89a2543a/a01153c20d644b0284a093b948c577e5 [2018-10-23 23:39:12,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:39:12,845 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:39:12,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:39:12,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:39:12,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:39:12,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:39:12" (1/1) ... [2018-10-23 23:39:12,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23aa162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:12, skipping insertion in model container [2018-10-23 23:39:12,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:39:12" (1/1) ... [2018-10-23 23:39:12,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:39:12,957 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:39:13,711 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:39:13,717 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:39:13,983 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:39:14,007 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:39:14,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14 WrapperNode [2018-10-23 23:39:14,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:39:14,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:39:14,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:39:14,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:39:14,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:39:14,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:39:14,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:39:14,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:39:14,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (1/1) ... [2018-10-23 23:39:14,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:39:14,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:39:14,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:39:14,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:39:14,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (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 [2018-10-23 23:39:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:39:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:39:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:39:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:39:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:39:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:39:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:39:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:39:19,754 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:39:19,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:39:19 BoogieIcfgContainer [2018-10-23 23:39:19,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:39:19,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:39:19,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:39:19,762 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:39:19,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:39:12" (1/3) ... [2018-10-23 23:39:19,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27791396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:39:19, skipping insertion in model container [2018-10-23 23:39:19,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:39:14" (2/3) ... [2018-10-23 23:39:19,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27791396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:39:19, skipping insertion in model container [2018-10-23 23:39:19,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:39:19" (3/3) ... [2018-10-23 23:39:19,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label30_true-unreach-call.c [2018-10-23 23:39:19,778 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:39:19,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:39:19,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:39:19,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:39:19,865 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:39:19,865 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:39:19,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:39:19,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:39:19,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:39:19,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:39:19,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:39:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-23 23:39:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-23 23:39:19,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:19,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:19,936 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:19,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2108174465, now seen corresponding path program 1 times [2018-10-23 23:39:19,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:20,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:20,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:20,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:20,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:20,895 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:39:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:21,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:39:21,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:39:21,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:39:21,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:39:21,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:39:21,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:39:21,155 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-23 23:39:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:39:23,195 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-23 23:39:23,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:39:23,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-23 23:39:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:39:23,224 INFO L225 Difference]: With dead ends: 838 [2018-10-23 23:39:23,224 INFO L226 Difference]: Without dead ends: 524 [2018-10-23 23:39:23,232 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 [2018-10-23 23:39:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-23 23:39:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-23 23:39:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-23 23:39:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-23 23:39:23,348 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 182 [2018-10-23 23:39:23,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:39:23,349 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-23 23:39:23,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:39:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-23 23:39:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 23:39:23,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:23,369 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:23,370 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:23,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1443247960, now seen corresponding path program 1 times [2018-10-23 23:39:23,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:23,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:23,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:23,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:23,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:23,763 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:39:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:23,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:39:23,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:39:23,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:39:24,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:39:24,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:39:24,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:39:24,012 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-23 23:39:24,806 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-23 23:39:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:39:27,937 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-23 23:39:27,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:39:27,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-10-23 23:39:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:39:27,956 INFO L225 Difference]: With dead ends: 1581 [2018-10-23 23:39:27,957 INFO L226 Difference]: Without dead ends: 1065 [2018-10-23 23:39:27,961 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 [2018-10-23 23:39:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-23 23:39:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-23 23:39:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 23:39:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-23 23:39:28,024 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 192 [2018-10-23 23:39:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:39:28,025 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-23 23:39:28,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:39:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-23 23:39:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-23 23:39:28,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:28,030 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:28,030 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:28,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1778495237, now seen corresponding path program 1 times [2018-10-23 23:39:28,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:28,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:28,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:28,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:28,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:28,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:39:28,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:39:28,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:39:28,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:39:28,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:39:28,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:39:28,438 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-23 23:39:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:39:31,261 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-23 23:39:31,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:39:31,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-10-23 23:39:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:39:31,277 INFO L225 Difference]: With dead ends: 2887 [2018-10-23 23:39:31,277 INFO L226 Difference]: Without dead ends: 1870 [2018-10-23 23:39:31,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:39:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-23 23:39:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-23 23:39:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-23 23:39:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-23 23:39:31,342 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 195 [2018-10-23 23:39:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:39:31,343 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-23 23:39:31,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:39:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-23 23:39:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-23 23:39:31,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:31,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:31,352 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:31,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324138, now seen corresponding path program 1 times [2018-10-23 23:39:31,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:31,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:31,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:31,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:31,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:31,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:39:31,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:39:31,645 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:39:31,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:39:31,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:39:31,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:39:31,647 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-10-23 23:39:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:39:33,432 INFO L93 Difference]: Finished difference Result 5425 states and 9196 transitions. [2018-10-23 23:39:33,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:39:33,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-10-23 23:39:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:39:33,458 INFO L225 Difference]: With dead ends: 5425 [2018-10-23 23:39:33,459 INFO L226 Difference]: Without dead ends: 3566 [2018-10-23 23:39:33,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:39:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-10-23 23:39:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3544. [2018-10-23 23:39:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2018-10-23 23:39:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5788 transitions. [2018-10-23 23:39:33,591 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5788 transitions. Word has length 215 [2018-10-23 23:39:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:39:33,592 INFO L481 AbstractCegarLoop]: Abstraction has 3544 states and 5788 transitions. [2018-10-23 23:39:33,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:39:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5788 transitions. [2018-10-23 23:39:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-23 23:39:33,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:33,609 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:33,610 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:33,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:33,610 INFO L82 PathProgramCache]: Analyzing trace with hash -647167813, now seen corresponding path program 1 times [2018-10-23 23:39:33,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:33,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:33,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:33,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:33,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:33,918 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:39:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:34,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:39:34,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:39:34,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:39:34,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:39:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:39:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:39:34,045 INFO L87 Difference]: Start difference. First operand 3544 states and 5788 transitions. Second operand 6 states. [2018-10-23 23:39:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:39:36,766 INFO L93 Difference]: Finished difference Result 7596 states and 12544 transitions. [2018-10-23 23:39:36,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:39:36,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-10-23 23:39:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:39:36,799 INFO L225 Difference]: With dead ends: 7596 [2018-10-23 23:39:36,799 INFO L226 Difference]: Without dead ends: 4058 [2018-10-23 23:39:36,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:39:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2018-10-23 23:39:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3727. [2018-10-23 23:39:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-10-23 23:39:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5669 transitions. [2018-10-23 23:39:36,964 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5669 transitions. Word has length 241 [2018-10-23 23:39:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:39:36,965 INFO L481 AbstractCegarLoop]: Abstraction has 3727 states and 5669 transitions. [2018-10-23 23:39:36,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:39:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5669 transitions. [2018-10-23 23:39:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-23 23:39:36,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:39:36,981 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:39:36,981 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:39:36,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:39:36,982 INFO L82 PathProgramCache]: Analyzing trace with hash 427925431, now seen corresponding path program 1 times [2018-10-23 23:39:36,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:39:36,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:36,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:36,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:39:36,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:39:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:37,588 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 23:39:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:39:37,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:39:37,832 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:39:37,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-23 23:39:37,839 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-23 23:39:37,968 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:39:37,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:43:44,482 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:43:44,483 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:43:44,484 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:43:44,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:43:44,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:43:44,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:43:44,498 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:43:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:43:44,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:43:44,756 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:43:44,957 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:43:44,958 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:43:44,963 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:43:44,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:43:44 BoogieIcfgContainer [2018-10-23 23:43:44,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:43:44,965 INFO L168 Benchmark]: Toolchain (without parser) took 272120.80 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -510.3 MB). Peak memory consumption was 949.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,966 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:43:44,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1162.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 295.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,968 INFO L168 Benchmark]: Boogie Preprocessor took 158.17 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,969 INFO L168 Benchmark]: RCFGBuilder took 5291.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.5 MB). Peak memory consumption was 256.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,970 INFO L168 Benchmark]: TraceAbstraction took 265205.53 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 695.7 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 8.5 MB). Peak memory consumption was 704.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:43:44,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1162.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 295.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.17 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5291.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.5 MB). Peak memory consumption was 256.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265205.53 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 695.7 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 8.5 MB). Peak memory consumption was 704.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1560]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1560). Cancelled while BasicCegarLoop was analyzing trace of length 255 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 265.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 13.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1546 SDtfs, 2618 SDslu, 654 SDs, 0 SdLazy, 4730 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3727occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 246.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1025 NumberOfCodeBlocks, 1025 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1020 ConstructedInterpolants, 0 QuantifiedInterpolants, 554140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 103/103 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown