java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_4.cil.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:21:08,875 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:21:08,877 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:21:08,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 19:21:08,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 19:21:08,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 19:21:08,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 19:21:08,895 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 19:21:08,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 19:21:08,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 19:21:08,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 19:21:08,899 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 19:21:08,900 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 19:21:08,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 19:21:08,903 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 19:21:08,904 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 19:21:08,904 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 19:21:08,906 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 19:21:08,908 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 19:21:08,910 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 19:21:08,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 19:21:08,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 19:21:08,921 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 19:21:08,921 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 19:21:08,921 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 19:21:08,922 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 19:21:08,924 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 19:21:08,925 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 19:21:08,925 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 19:21:08,927 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 19:21:08,927 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 19:21:08,928 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 19:21:08,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 19:21:08,928 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 19:21:08,930 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 19:21:08,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 19:21:08,931 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-03 19:21:08,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:21:08,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:21:08,948 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:21:08,948 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:21:08,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:21:08,948 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:21:08,948 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:21:08,952 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:21:08,952 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:21:08,953 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:21:08,953 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:21:08,953 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:21:08,953 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:21:08,953 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:21:08,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:21:08,955 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:21:08,955 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:21:08,955 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:21:08,955 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:21:08,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:21:08,956 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:21:08,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:21:08,956 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:21:08,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:21:08,956 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:21:08,957 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:21:08,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:21:08,959 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:21:08,959 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:21:08,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:21:08,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:21:08,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:21:08,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:21:08,960 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:21:08,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:21:08,961 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:21:08,961 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:21:08,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:21:08,961 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:21:08,962 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:21:09,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:21:09,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:21:09,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:21:09,021 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:21:09,022 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:21:09,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_4.cil.c_14.bpl [2018-12-03 19:21:09,023 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_4.cil.c_14.bpl' [2018-12-03 19:21:09,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:21:09,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:21:09,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:21:09,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:21:09,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:21:09,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:21:09,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:21:09,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:21:09,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:21:09,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... [2018-12-03 19:21:09,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:21:09,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:21:09,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:21:09,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:21:09,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-03 19:21:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 19:21:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 19:21:09,924 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 19:21:09,924 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 19:21:09,925 INFO L202 PluginConnector]: Adding new model s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:21:09 BoogieIcfgContainer [2018-12-03 19:21:09,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:21:09,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:21:09,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:21:09,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:21:09,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:21:09" (1/2) ... [2018-12-03 19:21:09,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ceae02 and model type s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:21:09, skipping insertion in model container [2018-12-03 19:21:09,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:21:09" (2/2) ... [2018-12-03 19:21:09,937 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_4.cil.c_14.bpl [2018-12-03 19:21:09,949 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:21:09,960 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:21:09,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:21:10,033 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:21:10,034 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:21:10,034 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:21:10,034 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:21:10,034 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:21:10,034 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:21:10,035 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:21:10,035 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:21:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-12-03 19:21:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-03 19:21:10,076 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:10,079 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:10,082 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:10,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash 212045975, now seen corresponding path program 1 times [2018-12-03 19:21:10,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:10,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:10,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,152 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:21:10,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:10,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:21:10,352 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:10,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:10,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:10,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:10,379 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-12-03 19:21:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:10,497 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2018-12-03 19:21:10,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:10,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-03 19:21:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:10,513 INFO L225 Difference]: With dead ends: 27 [2018-12-03 19:21:10,513 INFO L226 Difference]: Without dead ends: 14 [2018-12-03 19:21:10,518 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-03 19:21:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-03 19:21:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-03 19:21:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-12-03 19:21:10,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2018-12-03 19:21:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:10,559 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-12-03 19:21:10,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2018-12-03 19:21:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 19:21:10,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:10,560 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:10,561 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:10,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash -251001873, now seen corresponding path program 1 times [2018-12-03 19:21:10,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:10,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:10,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,563 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:21:10,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:10,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:10,650 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:10,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:10,653 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 3 states. [2018-12-03 19:21:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:10,855 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2018-12-03 19:21:10,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:10,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-03 19:21:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:10,857 INFO L225 Difference]: With dead ends: 29 [2018-12-03 19:21:10,857 INFO L226 Difference]: Without dead ends: 18 [2018-12-03 19:21:10,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-03 19:21:10,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-03 19:21:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-03 19:21:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2018-12-03 19:21:10,865 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2018-12-03 19:21:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:10,865 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-12-03 19:21:10,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2018-12-03 19:21:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-03 19:21:10,866 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:10,866 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:10,867 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:10,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash -129109843, now seen corresponding path program 1 times [2018-12-03 19:21:10,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:10,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:10,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:10,870 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 19:21:10,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:10,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:10,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:10,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:10,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:10,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:10,986 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 3 states. [2018-12-03 19:21:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:11,149 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2018-12-03 19:21:11,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:11,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-12-03 19:21:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:11,152 INFO L225 Difference]: With dead ends: 39 [2018-12-03 19:21:11,152 INFO L226 Difference]: Without dead ends: 24 [2018-12-03 19:21:11,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-03 19:21:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-03 19:21:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-03 19:21:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-12-03 19:21:11,160 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2018-12-03 19:21:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:11,160 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-12-03 19:21:11,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2018-12-03 19:21:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 19:21:11,162 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:11,162 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:11,162 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:11,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash 817687483, now seen corresponding path program 1 times [2018-12-03 19:21:11,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:11,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:11,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,165 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 19:21:11,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:11,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:11,356 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:11,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,357 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 3 states. [2018-12-03 19:21:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:11,459 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2018-12-03 19:21:11,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:11,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-12-03 19:21:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:11,462 INFO L225 Difference]: With dead ends: 35 [2018-12-03 19:21:11,463 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 19:21:11,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 19:21:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-12-03 19:21:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-03 19:21:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2018-12-03 19:21:11,487 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2018-12-03 19:21:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:11,488 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2018-12-03 19:21:11,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2018-12-03 19:21:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 19:21:11,492 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:11,492 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:11,493 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:11,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash 424660473, now seen corresponding path program 1 times [2018-12-03 19:21:11,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:11,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:11,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,499 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-03 19:21:11,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:11,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:11,612 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:11,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:11,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,616 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 3 states. [2018-12-03 19:21:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:11,701 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-12-03 19:21:11,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:11,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-12-03 19:21:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:11,702 INFO L225 Difference]: With dead ends: 62 [2018-12-03 19:21:11,702 INFO L226 Difference]: Without dead ends: 33 [2018-12-03 19:21:11,703 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-03 19:21:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-03 19:21:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-03 19:21:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2018-12-03 19:21:11,712 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2018-12-03 19:21:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:11,712 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2018-12-03 19:21:11,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2018-12-03 19:21:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-03 19:21:11,714 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:11,714 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:11,714 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:11,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash 944888583, now seen corresponding path program 1 times [2018-12-03 19:21:11,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:11,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:11,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:11,717 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-03 19:21:11,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:11,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:11,817 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:11,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:11,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:11,819 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 3 states. [2018-12-03 19:21:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:12,010 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2018-12-03 19:21:12,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:12,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-12-03 19:21:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:12,013 INFO L225 Difference]: With dead ends: 75 [2018-12-03 19:21:12,013 INFO L226 Difference]: Without dead ends: 45 [2018-12-03 19:21:12,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-03 19:21:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-03 19:21:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-03 19:21:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2018-12-03 19:21:12,023 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2018-12-03 19:21:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:12,024 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2018-12-03 19:21:12,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-12-03 19:21:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-03 19:21:12,025 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:12,026 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:12,026 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:12,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash -680849109, now seen corresponding path program 1 times [2018-12-03 19:21:12,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:12,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:12,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:12,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:12,028 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-03 19:21:12,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:21:12,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 19:21:12,151 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:21:12,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:21:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:21:12,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:12,153 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 3 states. [2018-12-03 19:21:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:12,454 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2018-12-03 19:21:12,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:21:12,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-12-03 19:21:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:12,456 INFO L225 Difference]: With dead ends: 97 [2018-12-03 19:21:12,456 INFO L226 Difference]: Without dead ends: 55 [2018-12-03 19:21:12,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:21:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-03 19:21:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-12-03 19:21:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-12-03 19:21:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2018-12-03 19:21:12,476 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 38 [2018-12-03 19:21:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:12,477 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2018-12-03 19:21:12,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:21:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2018-12-03 19:21:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-03 19:21:12,479 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:21:12,479 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 19:21:12,479 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:21:12,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash -625573959, now seen corresponding path program 1 times [2018-12-03 19:21:12,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:21:12,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:12,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:12,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:21:12,482 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:21:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-03 19:21:12,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:21:12,661 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 19:21:12,662 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-12-03 19:21:12,667 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10], [14], [16], [20], [22], [26], [28], [32], [34], [38], [40], [42], [44] [2018-12-03 19:21:12,747 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 19:21:12,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 19:21:52,444 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 19:21:52,446 INFO L272 AbstractInterpreter]: Visited 17 different actions 121 times. Merged at 15 different actions 64 times. Widened at 8 different actions 29 times. Found 32 fixpoints after 9 different actions. Largest state had 0 variables. [2018-12-03 19:21:52,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:21:52,480 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 19:21:52,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 19:21:52,481 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-03 19:21:52,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:21:52,492 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 19:21:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:21:52,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 19:21:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-03 19:21:52,651 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 19:21:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-03 19:21:52,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 19:21:52,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2018-12-03 19:21:52,916 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 19:21:52,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 19:21:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 19:21:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-03 19:21:52,919 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 4 states. [2018-12-03 19:21:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:21:53,553 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2018-12-03 19:21:53,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 19:21:53,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-12-03 19:21:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:21:53,555 INFO L225 Difference]: With dead ends: 104 [2018-12-03 19:21:53,555 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 19:21:53,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-03 19:21:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 19:21:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 19:21:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 19:21:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 19:21:53,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-12-03 19:21:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:21:53,558 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 19:21:53,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 19:21:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 19:21:53,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 19:21:53,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 19:21:54,408 WARN L180 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 21 [2018-12-03 19:21:55,118 WARN L180 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2018-12-03 19:21:55,553 WARN L180 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-12-03 19:21:55,697 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2018-12-03 19:21:55,883 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 391) no Hoare annotation was computed. [2018-12-03 19:21:55,884 INFO L444 ceAbstractionStarter]: At program point L349(lines 349 364) the Hoare annotation is: (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) [2018-12-03 19:21:55,884 INFO L444 ceAbstractionStarter]: At program point L374(lines 374 389) the Hoare annotation is: false [2018-12-03 19:21:55,884 INFO L444 ceAbstractionStarter]: At program point L339(lines 339 350) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,884 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 390) no Hoare annotation was computed. [2018-12-03 19:21:55,884 INFO L444 ceAbstractionStarter]: At program point L368(lines 363 383) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) [2018-12-03 19:21:55,884 INFO L444 ceAbstractionStarter]: At program point L271(lines 271 287) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8464)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8496)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,885 INFO L444 ceAbstractionStarter]: At program point L321(lines 321 329) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,885 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 391) no Hoare annotation was computed. [2018-12-03 19:21:55,885 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 391) no Hoare annotation was computed. [2018-12-03 19:21:55,885 INFO L444 ceAbstractionStarter]: At program point L295(lines 258 295) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8464)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8496)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,885 INFO L444 ceAbstractionStarter]: At program point L357(lines 357 375) the Hoare annotation is: (and (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3) (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) [2018-12-03 19:21:55,885 INFO L444 ceAbstractionStarter]: At program point L388(lines 286 388) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8496)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,886 INFO L444 ceAbstractionStarter]: At program point L291(lines 291 310) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_ssl3_accept_~blastFlag~5 3))) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~5 2) (= ULTIMATE.start_ssl3_accept_~s__state~5 8656)) (and .cse0 (= ULTIMATE.start_ssl3_accept_~s__state~5 8496)) (and .cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~5)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~5 8640) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~5 8640)))) [2018-12-03 19:21:55,900 INFO L202 PluginConnector]: Adding new model s3_srvr_4.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:21:55 BoogieIcfgContainer [2018-12-03 19:21:55,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 19:21:55,901 INFO L168 Benchmark]: Toolchain (without parser) took 46779.04 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 756.9 MB. Max. memory is 7.1 GB. [2018-12-03 19:21:55,903 INFO L168 Benchmark]: Boogie PL CUP Parser 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. [2018-12-03 19:21:55,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.73 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. [2018-12-03 19:21:55,904 INFO L168 Benchmark]: Boogie Preprocessor took 68.86 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. [2018-12-03 19:21:55,905 INFO L168 Benchmark]: RCFGBuilder took 663.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-12-03 19:21:55,905 INFO L168 Benchmark]: TraceAbstraction took 45973.06 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 716.7 MB. Max. memory is 7.1 GB. [2018-12-03 19:21:55,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser 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. * Boogie Procedure Inliner took 61.73 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. * Boogie Preprocessor took 68.86 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. * RCFGBuilder took 663.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45973.06 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 716.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 390]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 271]: Loop Invariant Derived loop invariant: ((((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8464)) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8496)) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: (((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8496)) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 339]: Loop Invariant Derived loop invariant: ((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 349]: Loop Invariant Derived loop invariant: ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656 - InvariantResult [Line: 258]: Loop Invariant Derived loop invariant: ((((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8464)) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8496)) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 321]: Loop Invariant Derived loop invariant: ((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 291]: Loop Invariant Derived loop invariant: (((ssl3_accept_~blastFlag~5 == 2 && ssl3_accept_~s__state~5 == 8656) || (ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8496)) || (ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5)) || ((ssl3_accept_~s__s3__tmp__next_state___0~5 <= 8640 && ssl3_accept_~blastFlag~5 <= 3) && ssl3_accept_~s__state~5 <= 8640) - InvariantResult [Line: 363]: Loop Invariant Derived loop invariant: ssl3_accept_~blastFlag~5 <= 3 && ssl3_accept_~s__state~5 == 8656 - InvariantResult [Line: 357]: Loop Invariant Derived loop invariant: ssl3_accept_~blastFlag~5 <= 3 && 8672 <= ssl3_accept_~s__state~5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. SAFE Result, 45.8s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 2.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 15 SDslu, 52 SDs, 0 SdLazy, 119 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 61 NumberOfFragments, 214 HoareAnnotationTreeSize, 10 FomulaSimplifications, 304 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 13312 SizeOfPredicates, 2 NumberOfNonLiveVariables, 381 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 413/428 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...