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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:39:34,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:39:34,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:39:34,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:39:34,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:39:34,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:39:34,911 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:39:34,912 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:39:34,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:39:34,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:39:34,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:39:34,916 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:39:34,917 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:39:34,918 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:39:34,919 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:39:34,920 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:39:34,921 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:39:34,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:39:34,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:39:34,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:39:34,928 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:39:34,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:39:34,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 08:39:34,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:39:34,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:39:34,976 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:39:34,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:39:34,977 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:39:34,977 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:39:34,977 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:39:34,977 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:39:34,977 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:39:34,978 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:39:34,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:39:34,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:39:34,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:39:34,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:39:34,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:39:34,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:39:34,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:39:34,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:39:34,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:39:34,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:39:34,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:39:34,984 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:39:35,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:39:35,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:39:35,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:39:35,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:39:35,069 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:39:35,069 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 08:39:35,132 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2208ae108/d9d419919cc44beea97cd50ff6dfd152/FLAGc4318915a [2018-10-27 08:39:35,898 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:39:35,899 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 08:39:35,927 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2208ae108/d9d419919cc44beea97cd50ff6dfd152/FLAGc4318915a [2018-10-27 08:39:35,947 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2208ae108/d9d419919cc44beea97cd50ff6dfd152 [2018-10-27 08:39:35,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:39:35,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:39:35,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:35,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:39:35,968 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:39:35,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:35" (1/1) ... [2018-10-27 08:39:35,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d508bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:35, skipping insertion in model container [2018-10-27 08:39:35,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:35" (1/1) ... [2018-10-27 08:39:35,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:39:36,137 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:39:37,285 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:37,290 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:39:37,723 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:37,753 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:39:37,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37 WrapperNode [2018-10-27 08:39:37,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:37,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:37,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:39:37,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:39:37,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:37,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:38,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:39:38,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:39:38,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:39:38,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... [2018-10-27 08:39:38,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:39:38,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:39:38,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:39:38,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:39:38,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:39:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:39:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:39:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:39:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:39:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:39:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:39:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:39:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:39:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:39:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:39:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:39:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:39:46,017 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:39:46,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:46 BoogieIcfgContainer [2018-10-27 08:39:46,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:39:46,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:39:46,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:39:46,023 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:39:46,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:39:35" (1/3) ... [2018-10-27 08:39:46,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630de1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:46, skipping insertion in model container [2018-10-27 08:39:46,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:37" (2/3) ... [2018-10-27 08:39:46,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630de1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:46, skipping insertion in model container [2018-10-27 08:39:46,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:46" (3/3) ... [2018-10-27 08:39:46,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-10-27 08:39:46,037 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:39:46,046 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:39:46,064 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:39:46,119 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:39:46,120 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:39:46,120 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:39:46,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:39:46,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:39:46,120 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:39:46,121 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:39:46,121 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:39:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:39:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 08:39:46,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:46,198 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] [2018-10-27 08:39:46,200 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:46,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:46,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-10-27 08:39:46,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:46,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:46,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:46,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:46,260 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:46,727 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:39:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:46,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:46,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:39:46,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:46,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:39:46,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:39:46,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:39:46,919 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 08:39:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:53,054 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 08:39:53,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:39:53,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-27 08:39:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:53,106 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 08:39:53,106 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 08:39:53,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:39:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 08:39:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 08:39:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 08:39:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-27 08:39:53,310 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-10-27 08:39:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:53,310 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-27 08:39:53,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:39:53,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-27 08:39:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 08:39:53,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:53,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:53,325 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:53,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:53,326 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-10-27 08:39:53,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:53,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:53,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:53,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:53,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:53,719 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:39:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:53,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:53,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:39:53,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:53,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:39:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:39:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:39:53,951 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-27 08:40:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:04,040 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-27 08:40:04,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:40:04,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-27 08:40:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:04,061 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 08:40:04,062 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 08:40:04,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:40:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 08:40:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 08:40:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 08:40:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-27 08:40:04,164 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-10-27 08:40:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:04,165 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-27 08:40:04,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:40:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-27 08:40:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 08:40:04,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:04,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:04,177 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:04,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:04,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-10-27 08:40:04,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:04,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:04,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:04,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:04,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:04,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:04,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:40:04,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:04,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:04,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:04,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:04,404 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-27 08:40:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:18,482 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-27 08:40:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:40:18,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-27 08:40:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:18,544 INFO L225 Difference]: With dead ends: 11199 [2018-10-27 08:40:18,544 INFO L226 Difference]: Without dead ends: 8280 [2018-10-27 08:40:18,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:40:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-27 08:40:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-27 08:40:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-27 08:40:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-27 08:40:18,824 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 130 [2018-10-27 08:40:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:18,824 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-27 08:40:18,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-27 08:40:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 08:40:18,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:18,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:18,829 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:18,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash -703578010, now seen corresponding path program 1 times [2018-10-27 08:40:18,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:18,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:18,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:18,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:18,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:19,118 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:40:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:19,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:19,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:40:19,311 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:19,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:19,312 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-27 08:40:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:25,337 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-27 08:40:25,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:40:25,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 08:40:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:25,418 INFO L225 Difference]: With dead ends: 20964 [2018-10-27 08:40:25,419 INFO L226 Difference]: Without dead ends: 12768 [2018-10-27 08:40:25,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:40:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-27 08:40:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-27 08:40:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-27 08:40:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-27 08:40:25,768 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 162 [2018-10-27 08:40:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:25,768 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-27 08:40:25,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-27 08:40:25,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 08:40:25,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:25,779 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:40:25,779 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:25,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:25,780 INFO L82 PathProgramCache]: Analyzing trace with hash 371580129, now seen corresponding path program 1 times [2018-10-27 08:40:25,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:25,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:25,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:25,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:25,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:26,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:26,055 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:26,056 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 08:40:26,058 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:40:26,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:26,108 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:26,590 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:40:26,591 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:40:26,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:26,607 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:40:27,063 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-27 08:40:27,063 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:40:27,334 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-10-27 08:40:27,334 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:40:27,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:40:27,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:40:27,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:27,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:27,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:27,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:27,337 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 6 states. [2018-10-27 08:42:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:42:21,203 INFO L93 Difference]: Finished difference Result 26119 states and 35031 transitions. [2018-10-27 08:42:21,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:42:21,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-10-27 08:42:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:42:21,254 INFO L225 Difference]: With dead ends: 26119 [2018-10-27 08:42:21,254 INFO L226 Difference]: Without dead ends: 13415 [2018-10-27 08:42:21,287 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:42:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2018-10-27 08:42:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13413. [2018-10-27 08:42:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2018-10-27 08:42:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 17845 transitions. [2018-10-27 08:42:21,587 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 17845 transitions. Word has length 241 [2018-10-27 08:42:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:42:21,587 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 17845 transitions. [2018-10-27 08:42:21,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:42:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 17845 transitions. [2018-10-27 08:42:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-27 08:42:21,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:42:21,603 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:42:21,603 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:42:21,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:21,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1681609374, now seen corresponding path program 1 times [2018-10-27 08:42:21,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:42:21,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:21,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:42:21,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:21,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:42:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:42:22,194 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:22,405 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:22,640 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 200 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:42:23,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:42:23,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:42:23,121 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-10-27 08:42:23,122 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:42:23,131 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:42:23,131 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:42:23,415 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:42:23,415 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:42:23,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:23,455 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:42:24,050 INFO L227 lantSequenceWeakener]: Weakened 425 states. On average, predicates are now at 77.74% of their original sizes. [2018-10-27 08:42:24,050 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:42:24,686 INFO L415 sIntCurrentIteration]: We unified 427 AI predicates to 427 [2018-10-27 08:42:24,686 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:42:24,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:42:24,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:42:24,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:42:24,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:42:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:42:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:42:24,688 INFO L87 Difference]: Start difference. First operand 13413 states and 17845 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 08:43:36,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:43:36,158 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:43:36,165 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:43:36,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:43:36 BoogieIcfgContainer [2018-10-27 08:43:36,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:43:36,166 INFO L168 Benchmark]: Toolchain (without parser) took 240205.55 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -980.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,168 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:43:36,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1791.48 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 375.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 736.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -912.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,170 INFO L168 Benchmark]: Boogie Preprocessor took 227.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,171 INFO L168 Benchmark]: RCFGBuilder took 7660.32 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 512.1 MB). Peak memory consumption was 512.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,172 INFO L168 Benchmark]: TraceAbstraction took 230145.57 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -741.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 08:43:36,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1791.48 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 375.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 736.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -912.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 227.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7660.32 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 512.1 MB). Peak memory consumption was 512.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230145.57 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -741.9 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: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (13413states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (21087 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 230.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 222.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1901 SDtfs, 15591 SDslu, 1207 SDs, 0 SdLazy, 23623 SolverSat, 4663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 176.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 712 GetRequests, 664 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13413occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9976546735102241 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 16.466266866566716 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 164 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1140 NumberOfCodeBlocks, 1140 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 1890229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 518/723 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown