java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 06:15:00,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 06:15:00,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 06:15:00,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 06:15:00,364 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 06:15:00,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 06:15:00,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 06:15:00,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 06:15:00,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 06:15:00,372 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 06:15:00,373 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 06:15:00,373 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 06:15:00,374 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 06:15:00,375 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 06:15:00,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 06:15:00,379 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 06:15:00,381 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 06:15:00,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 06:15:00,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 06:15:00,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 06:15:00,388 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 06:15:00,393 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 06:15:00,394 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 06:15:00,394 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 06:15:00,404 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 06:15:00,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 06:15:00,406 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 06:15:00,406 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 06:15:00,406 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 06:15:00,406 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 06:15:00,407 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 06:15:00,407 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 06:15:00,408 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 06:15:00,408 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 06:15:00,408 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 06:15:00,408 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 06:15:00,408 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 06:15:00,409 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 06:15:00,409 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 06:15:00,409 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 06:15:00,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 06:15:00,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 06:15:00,410 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 06:15:00,410 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 06:15:00,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 06:15:00,410 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 06:15:00,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 06:15:00,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 06:15:00,411 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 06:15:00,411 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 06:15:00,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 06:15:00,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 06:15:00,412 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 06:15:00,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 06:15:00,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 06:15:00,413 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 06:15:00,414 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 06:15:00,414 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 06:15:00,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 06:15:00,463 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 06:15:00,468 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 06:15:00,469 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 06:15:00,470 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 06:15:00,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_true-valid-memsafety_true-termination.i [2018-01-21 06:15:00,662 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 06:15:00,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 06:15:00,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 06:15:00,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 06:15:00,673 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 06:15:00,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f424e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00, skipping insertion in model container [2018-01-21 06:15:00,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,691 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:15:00,738 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:15:00,856 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:15:00,871 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:15:00,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00 WrapperNode [2018-01-21 06:15:00,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 06:15:00,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 06:15:00,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 06:15:00,880 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 06:15:00,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... [2018-01-21 06:15:00,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 06:15:00,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 06:15:00,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 06:15:00,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 06:15:00,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (1/1) ... No working directory specified, using /storage/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 [2018-01-21 06:15:00,967 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure h5 [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure g5 [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 06:15:00,968 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 06:15:00,968 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 06:15:00,969 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure h5 [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure g5 [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 06:15:00,970 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 06:15:01,147 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 06:15:01,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:15:01 BoogieIcfgContainer [2018-01-21 06:15:01,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 06:15:01,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 06:15:01,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 06:15:01,152 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 06:15:01,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 06:15:00" (1/3) ... [2018-01-21 06:15:01,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa595ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:15:01, skipping insertion in model container [2018-01-21 06:15:01,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:15:00" (2/3) ... [2018-01-21 06:15:01,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa595ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:15:01, skipping insertion in model container [2018-01-21 06:15:01,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:15:01" (3/3) ... [2018-01-21 06:15:01,155 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test5_true-valid-memsafety_true-termination.i [2018-01-21 06:15:01,163 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 06:15:01,169 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-21 06:15:01,214 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:01,214 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:01,214 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:01,214 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:01,214 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:01,214 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:01,215 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:01,215 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 06:15:01,215 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:01,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 06:15:01,243 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,244 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 06:15:01,244 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 06:15:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1245989314, now seen corresponding path program 1 times [2018-01-21 06:15:01,249 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,300 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,300 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:01,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:01,408 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:01,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:15:01,409 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:01,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:15:01,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:15:01,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:01,424 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 06:15:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:01,561 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 06:15:01,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:15:01,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-21 06:15:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:01,639 INFO L225 Difference]: With dead ends: 41 [2018-01-21 06:15:01,639 INFO L226 Difference]: Without dead ends: 14 [2018-01-21 06:15:01,644 INFO L525 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 [2018-01-21 06:15:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-21 06:15:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-21 06:15:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-21 06:15:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-21 06:15:01,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-21 06:15:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:01,681 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-21 06:15:01,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:15:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-21 06:15:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 06:15:01,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,682 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 06:15:01,682 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 06:15:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash 900052320, now seen corresponding path program 1 times [2018-01-21 06:15:01,683 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,685 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,742 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 06:15:01,750 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,751 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,760 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:01,761 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:01,761 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:01,761 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:01,761 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:01,761 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:01,761 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:01,761 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 06:15:01,761 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 06:15:01,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,763 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 06:15:01,763 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 06:15:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash 70987, now seen corresponding path program 1 times [2018-01-21 06:15:01,763 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,774 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 06:15:01,775 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,777 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:01,777 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:01,777 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:01,777 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:01,777 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:01,777 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:01,778 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:01,778 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 06:15:01,778 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 06:15:01,780 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,780 INFO L322 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] [2018-01-21 06:15:01,780 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 06:15:01,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2050599687, now seen corresponding path program 1 times [2018-01-21 06:15:01,781 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,782 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 06:15:01,818 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 06:15:01,822 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,822 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,823 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,824 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,824 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,825 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,825 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 06:15:01,829 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:01,830 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:01,830 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:01,830 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:01,830 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:01,830 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:01,830 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:01,830 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 06:15:01,831 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 06:15:01,834 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,834 INFO L322 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] [2018-01-21 06:15:01,834 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 06:15:01,834 INFO L82 PathProgramCache]: Analyzing trace with hash -104927001, now seen corresponding path program 1 times [2018-01-21 06:15:01,834 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,836 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,836 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,837 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:01,851 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:01,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:01,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:15:01,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:01,917 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:15:01,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:15:01,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:01,918 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 06:15:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:01,976 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 06:15:01,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:15:01,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-21 06:15:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:01,977 INFO L225 Difference]: With dead ends: 41 [2018-01-21 06:15:01,977 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 06:15:01,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 06:15:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 06:15:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 06:15:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 06:15:01,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-21 06:15:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:01,979 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 06:15:01,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:15:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 06:15:01,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 06:15:01,982 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:01,982 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:01,982 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:01,982 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:01,983 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:01,983 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:01,983 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:01,983 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h5Err0EnsuresViolation======== [2018-01-21 06:15:01,983 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 06:15:01,985 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:01,985 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 06:15:01,985 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h5Err0EnsuresViolation]=== [2018-01-21 06:15:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2134695694, now seen corresponding path program 1 times [2018-01-21 06:15:01,986 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:01,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,988 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:01,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:01,988 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:01,999 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:02,026 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:02,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:15:02,027 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:02,028 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:15:02,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:15:02,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:02,029 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 06:15:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:02,104 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 06:15:02,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:15:02,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 06:15:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:02,105 INFO L225 Difference]: With dead ends: 41 [2018-01-21 06:15:02,105 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 06:15:02,105 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 06:15:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 06:15:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 06:15:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 06:15:02,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 06:15:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:02,106 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 06:15:02,106 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:15:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 06:15:02,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 06:15:02,108 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:02,108 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:02,108 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:02,108 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:02,108 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:02,108 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:02,108 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:02,108 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 06:15:02,108 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 06:15:02,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:02,110 INFO L322 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] [2018-01-21 06:15:02,110 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 06:15:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash 312739629, now seen corresponding path program 1 times [2018-01-21 06:15:02,110 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:02,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:02,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:02,123 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:02,152 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:02,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:15:02,153 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:02,153 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:15:02,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:15:02,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:02,153 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 06:15:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:02,200 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 06:15:02,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:15:02,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-21 06:15:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:02,201 INFO L225 Difference]: With dead ends: 41 [2018-01-21 06:15:02,202 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 06:15:02,202 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 06:15:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 06:15:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 06:15:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 06:15:02,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 06:15:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:02,203 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 06:15:02,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:15:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 06:15:02,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 06:15:02,205 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:15:02,205 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:15:02,205 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:15:02,205 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:15:02,206 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:15:02,206 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:15:02,206 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:15:02,206 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == g5Err0EnsuresViolation======== [2018-01-21 06:15:02,206 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:15:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 06:15:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 06:15:02,208 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:02,208 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 06:15:02,208 INFO L371 AbstractCegarLoop]: === Iteration 1 === [g5Err0EnsuresViolation]=== [2018-01-21 06:15:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1313639590, now seen corresponding path program 1 times [2018-01-21 06:15:02,209 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:02,210 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,211 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:02,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,211 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:02,221 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:02,257 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:02,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 06:15:02,257 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:02,257 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 06:15:02,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 06:15:02,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 06:15:02,258 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 06:15:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:02,330 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 06:15:02,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 06:15:02,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 06:15:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:02,332 INFO L225 Difference]: With dead ends: 41 [2018-01-21 06:15:02,332 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 06:15:02,332 INFO L525 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 [2018-01-21 06:15:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 06:15:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 06:15:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 06:15:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-01-21 06:15:02,336 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-01-21 06:15:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:02,336 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-01-21 06:15:02,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 06:15:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-01-21 06:15:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 06:15:02,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:02,338 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 06:15:02,338 INFO L371 AbstractCegarLoop]: === Iteration 2 === [g5Err0EnsuresViolation]=== [2018-01-21 06:15:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2068124648, now seen corresponding path program 1 times [2018-01-21 06:15:02,338 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:02,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,340 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:02,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,340 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:02,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:02,483 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:02,484 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-21 06:15:02,484 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:02,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-21 06:15:02,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-21 06:15:02,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-21 06:15:02,485 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2018-01-21 06:15:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:02,541 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2018-01-21 06:15:02,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 06:15:02,542 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-01-21 06:15:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:02,543 INFO L225 Difference]: With dead ends: 36 [2018-01-21 06:15:02,543 INFO L226 Difference]: Without dead ends: 24 [2018-01-21 06:15:02,544 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-21 06:15:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-21 06:15:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-21 06:15:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 06:15:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-01-21 06:15:02,549 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2018-01-21 06:15:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:02,549 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-01-21 06:15:02,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-21 06:15:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-01-21 06:15:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 06:15:02,550 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:15:02,551 INFO L322 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] [2018-01-21 06:15:02,551 INFO L371 AbstractCegarLoop]: === Iteration 3 === [g5Err0EnsuresViolation]=== [2018-01-21 06:15:02,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1982732102, now seen corresponding path program 1 times [2018-01-21 06:15:02,551 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:15:02,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,553 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:15:02,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:15:02,553 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:15:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:15:02,565 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:15:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 06:15:02,596 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:15:02,596 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 06:15:02,597 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:15:02,597 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 06:15:02,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 06:15:02,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 06:15:02,598 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 4 states. [2018-01-21 06:15:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:15:02,636 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-01-21 06:15:02,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 06:15:02,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-01-21 06:15:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:15:02,637 INFO L225 Difference]: With dead ends: 24 [2018-01-21 06:15:02,638 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 06:15:02,638 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 06:15:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 06:15:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 06:15:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 06:15:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 06:15:02,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-01-21 06:15:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:15:02,640 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 06:15:02,640 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 06:15:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 06:15:02,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 06:15:02,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 06:15:02 BoogieIcfgContainer [2018-01-21 06:15:02,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 06:15:02,644 INFO L168 Benchmark]: Toolchain (without parser) took 1981.29 ms. Allocated memory was 300.4 MB in the beginning and 454.6 MB in the end (delta: 154.1 MB). Free memory was 257.6 MB in the beginning and 327.4 MB in the end (delta: -69.8 MB). Peak memory consumption was 84.3 MB. Max. memory is 5.3 GB. [2018-01-21 06:15:02,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 300.4 MB. Free memory is still 263.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 06:15:02,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.51 ms. Allocated memory is still 300.4 MB. Free memory was 257.6 MB in the beginning and 243.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-21 06:15:02,646 INFO L168 Benchmark]: Boogie Preprocessor took 35.32 ms. Allocated memory is still 300.4 MB. Free memory is still 243.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 06:15:02,646 INFO L168 Benchmark]: RCFGBuilder took 232.83 ms. Allocated memory is still 300.4 MB. Free memory was 243.6 MB in the beginning and 228.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 06:15:02,647 INFO L168 Benchmark]: TraceAbstraction took 1493.73 ms. Allocated memory was 300.4 MB in the beginning and 454.6 MB in the end (delta: 154.1 MB). Free memory was 226.7 MB in the beginning and 327.4 MB in the end (delta: -100.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 5.3 GB. [2018-01-21 06:15:02,648 INFO L344 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 300.4 MB. Free memory is still 263.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.51 ms. Allocated memory is still 300.4 MB. Free memory was 257.6 MB in the beginning and 243.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.32 ms. Allocated memory is still 300.4 MB. Free memory is still 243.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 232.83 ms. Allocated memory is still 300.4 MB. Free memory was 243.6 MB in the beginning and 228.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1493.73 ms. Allocated memory was 300.4 MB in the beginning and 454.6 MB in the end (delta: 154.1 MB). Free memory was 226.7 MB in the beginning and 327.4 MB in the end (delta: -100.7 MB). Peak memory consumption was 53.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1072]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1450] CALL entry_point() [L1445] CALL h5() [L1434] CALL ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1450] CALL entry_point() [L1445] CALL, EXPR h5() [L1434] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1434] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1434] int *p = (int *)ldv_malloc(sizeof(int)); [L1435] RET return p; VAL [\result={0:0}, p={0:0}] [L1445] EXPR h5() VAL [h5()={0:0}] [L1445] int *p = h5(); [L1446] CALL g5(p) VAL [p={0:0}] [L1439] COND FALSE !(\read(*p)) VAL [p={0:0}, p={0:0}] [L1446] FCALL g5(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1449]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1433]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: h5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1444]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: entry_pointErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1438]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: g5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 12 SDslu, 146 SDs, 0 SdLazy, 62 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 2703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_06-15-02-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-6-2018-01-21_06-15-02-658.csv Received shutdown request...