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_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:48:57,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:48:57,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:48:57,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:48:57,360 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:48:57,361 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:48:57,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:48:57,366 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:48:57,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:48:57,371 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:48:57,372 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:48:57,372 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:48:57,373 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:48:57,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:48:57,375 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:48:57,378 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:48:57,380 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:48:57,382 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:48:57,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:48:57,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:48:57,388 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:48:57,393 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:48:57,394 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:48:57,394 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_mostprecise.epf [2018-01-21 02:48:57,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:48:57,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:48:57,414 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:48:57,414 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:48:57,415 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:48:57,415 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:48:57,415 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:48:57,415 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:48:57,415 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:48:57,416 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:48:57,416 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:48:57,416 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:48:57,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:48:57,418 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:48:57,418 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:48:57,418 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:48:57,418 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:48:57,418 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:48:57,419 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:48:57,419 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:48:57,419 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:48:57,419 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:48:57,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:48:57,420 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:48:57,420 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:48:57,420 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:48:57,420 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:48:57,420 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:48:57,421 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:48:57,421 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:48:57,421 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:48:57,421 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:48:57,421 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:48:57,422 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:48:57,422 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:48:57,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:48:57,493 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:48:57,499 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:48:57,501 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:48:57,501 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:48:57,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 02:48:57,717 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:48:57,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:48:57,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:48:57,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:48:57,731 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:48:57,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba4cb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57, skipping insertion in model container [2018-01-21 02:48:57,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,750 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:48:57,789 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:48:57,916 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:48:57,938 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:48:57,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57 WrapperNode [2018-01-21 02:48:57,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:48:57,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:48:57,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:48:57,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:48:57,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (1/1) ... [2018-01-21 02:48:57,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:48:57,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:48:57,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:48:57,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:48:57,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (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 02:48:58,028 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:48:58,029 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:48:58,029 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 02:48:58,029 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:48:58,029 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 02:48:58,029 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 02:48:58,029 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:48:58,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:48:58,405 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:48:58,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:48:58 BoogieIcfgContainer [2018-01-21 02:48:58,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:48:58,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:48:58,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:48:58,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:48:58,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:48:57" (1/3) ... [2018-01-21 02:48:58,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7b32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:48:58, skipping insertion in model container [2018-01-21 02:48:58,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:48:57" (2/3) ... [2018-01-21 02:48:58,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7b32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:48:58, skipping insertion in model container [2018-01-21 02:48:58,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:48:58" (3/3) ... [2018-01-21 02:48:58,415 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 02:48:58,423 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:48:58,429 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 02:48:58,476 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:48:58,477 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:48:58,477 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:48:58,477 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:48:58,477 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:48:58,477 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:48:58,477 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:48:58,478 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 02:48:58,478 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:48:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 02:48:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 02:48:58,513 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:48:58,514 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:48:58,514 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 02:48:58,520 INFO L82 PathProgramCache]: Analyzing trace with hash -863788705, now seen corresponding path program 1 times [2018-01-21 02:48:58,523 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:48:58,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:58,585 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:48:58,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:58,585 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:48:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:48:58,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:48:58,726 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 02:48:58,729 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:48:58,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:48:58,730 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:48:58,733 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:48:58,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:48:58,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:48:58,756 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 02:48:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:48:58,783 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-01-21 02:48:58,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:48:58,785 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 02:48:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:48:58,793 INFO L225 Difference]: With dead ends: 55 [2018-01-21 02:48:58,794 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:48:58,798 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:48:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:48:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:48:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:48:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:48:58,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 02:48:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:48:58,981 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:48:58,981 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:48:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:48:58,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:48:58,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 02:48:59,021 INFO L401 ceAbstractionStarter]: For program point L551'(lines 551 552) no Hoare annotation was computed. [2018-01-21 02:48:59,021 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 555) no Hoare annotation was computed. [2018-01-21 02:48:59,022 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 540 557) the Hoare annotation is: true [2018-01-21 02:48:59,022 INFO L401 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-21 02:48:59,022 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 540 557) no Hoare annotation was computed. [2018-01-21 02:48:59,022 INFO L401 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-21 02:48:59,022 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 540 557) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point L552(line 552) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point L551(lines 551 552) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point L552'(line 552) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 540 557) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L404 ceAbstractionStarter]: At program point L551'''(lines 551 552) the Hoare annotation is: true [2018-01-21 02:48:59,023 INFO L404 ceAbstractionStarter]: At program point L546''(lines 546 555) the Hoare annotation is: true [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point L546'''(lines 546 555) no Hoare annotation was computed. [2018-01-21 02:48:59,023 INFO L401 ceAbstractionStarter]: For program point L548''(line 548) no Hoare annotation was computed. [2018-01-21 02:48:59,024 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,024 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,024 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 572) the Hoare annotation is: true [2018-01-21 02:48:59,024 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,024 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 572) the Hoare annotation is: true [2018-01-21 02:48:59,024 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,024 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 572) the Hoare annotation is: true [2018-01-21 02:48:59,024 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 572) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L561(lines 561 563) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L568(line 568) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L569(line 569) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L568'(line 568) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 558 572) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L570(line 570) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L568'''(line 568) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point L564'(lines 564 566) no Hoare annotation was computed. [2018-01-21 02:48:59,025 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 558 572) no Hoare annotation was computed. [2018-01-21 02:48:59,026 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 558 572) no Hoare annotation was computed. [2018-01-21 02:48:59,026 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 558 572) the Hoare annotation is: true [2018-01-21 02:48:59,026 INFO L401 ceAbstractionStarter]: For program point L561''(lines 561 563) no Hoare annotation was computed. [2018-01-21 02:48:59,026 INFO L401 ceAbstractionStarter]: For program point L567'(line 567) no Hoare annotation was computed. [2018-01-21 02:48:59,026 INFO L404 ceAbstractionStarter]: At program point L569'(line 569) the Hoare annotation is: true [2018-01-21 02:48:59,026 INFO L401 ceAbstractionStarter]: For program point L567''(line 567) no Hoare annotation was computed. [2018-01-21 02:48:59,027 INFO L401 ceAbstractionStarter]: For program point L568''(line 568) no Hoare annotation was computed. [2018-01-21 02:48:59,030 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:48:59,030 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:48:59,030 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:48:59,031 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:48:59,031 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:48:59,031 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:48:59,031 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:48:59,031 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 02:48:59,031 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:48:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 02:48:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 02:48:59,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:48:59,034 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 02:48:59,034 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 02:48:59,034 INFO L82 PathProgramCache]: Analyzing trace with hash 101226, now seen corresponding path program 1 times [2018-01-21 02:48:59,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:48:59,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:48:59,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:48:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:48:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:48:59,065 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:48:59,069 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:48:59,074 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:48:59,074 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:48:59,074 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:48:59,075 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:48:59,075 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:48:59,075 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:48:59,075 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:48:59,075 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 02:48:59,075 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:48:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 02:48:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 02:48:59,079 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:48:59,079 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, 1] [2018-01-21 02:48:59,080 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:48:59,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1088900075, now seen corresponding path program 1 times [2018-01-21 02:48:59,080 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:48:59,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,081 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:48:59,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,081 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:48:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:48:59,101 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:48:59,144 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 02:48:59,149 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:48:59,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:48:59,149 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:48:59,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:48:59,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:48:59,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:48:59,150 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 02:48:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:48:59,155 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-01-21 02:48:59,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:48:59,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-21 02:48:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:48:59,159 INFO L225 Difference]: With dead ends: 55 [2018-01-21 02:48:59,159 INFO L226 Difference]: Without dead ends: 37 [2018-01-21 02:48:59,160 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:48:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-21 02:48:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-21 02:48:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-21 02:48:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-01-21 02:48:59,180 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2018-01-21 02:48:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:48:59,181 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-01-21 02:48:59,181 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:48:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-01-21 02:48:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 02:48:59,182 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:48:59,182 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, 1, 1] [2018-01-21 02:48:59,182 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:48:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash -145997304, now seen corresponding path program 1 times [2018-01-21 02:48:59,183 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:48:59,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,184 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:48:59,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,184 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:48:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:48:59,216 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:48:59,322 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 02:48:59,323 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:48:59,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 02:48:59,323 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:48:59,338 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 02:48:59,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 02:48:59,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 02:48:59,340 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-01-21 02:48:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:48:59,435 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-01-21 02:48:59,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 02:48:59,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-21 02:48:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:48:59,437 INFO L225 Difference]: With dead ends: 51 [2018-01-21 02:48:59,437 INFO L226 Difference]: Without dead ends: 39 [2018-01-21 02:48:59,438 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 02:48:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-21 02:48:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-01-21 02:48:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 02:48:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-21 02:48:59,445 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2018-01-21 02:48:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:48:59,445 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-21 02:48:59,446 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 02:48:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-21 02:48:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 02:48:59,447 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:48:59,447 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:48:59,447 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:48:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash 197922362, now seen corresponding path program 1 times [2018-01-21 02:48:59,448 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:48:59,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,451 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:48:59,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:48:59,452 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:48:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:48:59,489 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:48:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:48:59,792 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:48:59,792 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:48:59,794 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-21 02:48:59,796 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [10], [11], [12], [33], [37], [38], [40], [41], [46], [47], [50], [56], [60], [61], [62], [63], [64], [66], [67], [68], [69], [70], [71], [73], [74], [75], [76], [77], [78] [2018-01-21 02:48:59,858 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:48:59,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 02:49:57,603 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 02:49:57,604 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 02:49:57,605 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 02:49:57,605 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:49:57,605 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-01-21 02:49:57,612 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:49:57,612 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 02:49:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:49:57,667 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 02:49:57,672 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 02:49:57,673 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 02:49:57,674 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:49:57,675 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:49:57,676 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:49:57,676 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:49:57,676 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:49:57,676 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:49:57,676 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:49:57,677 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 02:49:57,677 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:49:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 02:49:57,678 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 02:49:57,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 02:49:57 BoogieIcfgContainer [2018-01-21 02:49:57,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 02:49:57,681 INFO L168 Benchmark]: Toolchain (without parser) took 59961.96 ms. Allocated memory was 309.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 267.0 MB in the beginning and 526.7 MB in the end (delta: -259.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-21 02:49:57,682 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:49:57,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.88 ms. Allocated memory is still 309.9 MB. Free memory was 267.0 MB in the beginning and 257.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:49:57,683 INFO L168 Benchmark]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 309.9 MB. Free memory was 257.0 MB in the beginning and 255.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:49:57,683 INFO L168 Benchmark]: RCFGBuilder took 424.44 ms. Allocated memory is still 309.9 MB. Free memory was 255.1 MB in the beginning and 238.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. [2018-01-21 02:49:57,684 INFO L168 Benchmark]: TraceAbstraction took 59271.47 ms. Allocated memory was 309.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 238.1 MB in the beginning and 526.7 MB in the end (delta: -288.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-21 02:49:57,686 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 221.88 ms. Allocated memory is still 309.9 MB. Free memory was 267.0 MB in the beginning and 257.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 309.9 MB. Free memory was 257.0 MB in the beginning and 255.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 424.44 ms. Allocated memory is still 309.9 MB. Free memory was 255.1 MB in the beginning and 238.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 59271.47 ms. Allocated memory was 309.9 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 238.1 MB in the beginning and 526.7 MB in the end (delta: -288.6 MB). Peak memory consumption was 1.1 GB. 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 540]: 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: cstrncpyErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 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 4 procedures, 41 locations, 4 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=41occurred 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 - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 58.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 9 SDslu, 96 SDs, 0 SdLazy, 15 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 558]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 558). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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: 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/cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_02-49-57-695.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_02-49-57-695.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_02-49-57-695.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_02-49-57-695.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncpy-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_02-49-57-695.csv Completed graceful shutdown