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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrcat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:28:45,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:28:45,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:28:45,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:28:45,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:28:45,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:28:45,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:28:45,864 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:28:45,865 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:28:45,866 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:28:45,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:28:45,890 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_imprecise.epf [2018-01-21 00:28:45,900 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:28:45,900 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:28:45,901 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:28:45,901 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:28:45,902 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:28:45,902 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:28:45,902 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:28:45,902 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:28:45,903 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:28:45,903 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:28:45,903 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:28:45,903 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:28:45,904 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:28:45,905 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:28:45,905 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:28:45,905 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:28:45,905 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:28:45,905 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:28:45,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:28:45,906 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:28:45,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:28:45,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:28:45,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:28:45,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:28:45,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:28:45,908 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:28:45,908 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:28:45,909 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:28:45,909 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:28:45,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:28:45,951 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:28:45,954 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:28:45,955 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:28:45,955 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:28:45,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrcat_unsafe_false-valid-deref.i [2018-01-21 00:28:46,053 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:28:46,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:28:46,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:28:46,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:28:46,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:28:46,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1916d483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46, skipping insertion in model container [2018-01-21 00:28:46,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,094 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:28:46,114 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:28:46,232 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:28:46,247 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:28:46,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46 WrapperNode [2018-01-21 00:28:46,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:28:46,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:28:46,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:28:46,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:28:46,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (1/1) ... [2018-01-21 00:28:46,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:28:46,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:28:46,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:28:46,291 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:28:46,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (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 00:28:46,335 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:28:46,335 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:28:46,335 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcat [2018-01-21 00:28:46,336 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcat [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:28:46,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:28:46,337 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:28:46,498 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:28:46,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:28:46 BoogieIcfgContainer [2018-01-21 00:28:46,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:28:46,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:28:46,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:28:46,501 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:28:46,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:28:46" (1/3) ... [2018-01-21 00:28:46,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a03fe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:28:46, skipping insertion in model container [2018-01-21 00:28:46,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:28:46" (2/3) ... [2018-01-21 00:28:46,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a03fe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:28:46, skipping insertion in model container [2018-01-21 00:28:46,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:28:46" (3/3) ... [2018-01-21 00:28:46,504 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe_false-valid-deref.i [2018-01-21 00:28:46,510 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:28:46,517 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 00:28:46,560 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:46,560 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:46,560 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:46,561 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:46,561 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:46,561 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:46,561 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:46,561 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:28:46,562 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-21 00:28:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:28:46,584 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:46,584 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:28:46,585 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:28:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash 73038, now seen corresponding path program 1 times [2018-01-21 00:28:46,593 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:46,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,638 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:46,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,638 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:46,697 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:28:46,703 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:46,708 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:46,708 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:46,708 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:46,708 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:46,708 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:46,709 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:46,709 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:46,709 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrcatErr0EnsuresViolation======== [2018-01-21 00:28:46,709 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-21 00:28:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 00:28:46,711 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:46,711 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:46,711 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcatErr0EnsuresViolation]=== [2018-01-21 00:28:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1955432963, now seen corresponding path program 1 times [2018-01-21 00:28:46,711 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:46,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,712 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:46,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,712 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:46,728 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:46,752 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 00:28:46,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:46,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:46,754 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:46,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:46,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:46,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:46,769 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-21 00:28:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:46,787 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-21 00:28:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:46,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-21 00:28:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:46,798 INFO L225 Difference]: With dead ends: 42 [2018-01-21 00:28:46,798 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:28:46,801 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 00:28:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:28:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:28:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:28:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:28:46,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-01-21 00:28:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:46,901 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:28:46,902 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:28:46,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:28:46,905 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:46,905 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:46,905 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:46,905 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:46,906 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:46,906 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:46,906 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:46,906 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:28:46,906 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-21 00:28:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 00:28:46,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:46,909 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:46,910 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:28:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash 598228398, now seen corresponding path program 1 times [2018-01-21 00:28:46,910 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:46,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,912 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:46,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:46,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:46,934 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 00:28:46,934 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:46,934 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:46,934 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:46,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:46,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:46,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:46,935 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-21 00:28:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:46,938 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-21 00:28:46,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:46,938 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-21 00:28:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:46,941 INFO L225 Difference]: With dead ends: 42 [2018-01-21 00:28:46,941 INFO L226 Difference]: Without dead ends: 24 [2018-01-21 00:28:46,941 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 00:28:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-21 00:28:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-21 00:28:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 00:28:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-01-21 00:28:46,949 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2018-01-21 00:28:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:46,949 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-01-21 00:28:46,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-01-21 00:28:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 00:28:46,950 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:46,950 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 00:28:46,951 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:28:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash 376830319, now seen corresponding path program 1 times [2018-01-21 00:28:46,951 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:46,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:46,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:46,953 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:28:47,009 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:28:47,016 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:47,019 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:47,020 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:47,020 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:28:47,032 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:28:47,032 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:28:47,032 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:28:47,032 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:28:47,032 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:28:47,032 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:28:47,033 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:28:47,033 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:28:47,033 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:28:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-21 00:28:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 00:28:47,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:28:47,034 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:28:47,035 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:28:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1661945480, now seen corresponding path program 1 times [2018-01-21 00:28:47,035 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:28:47,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:47,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:28:47,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:28:47,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:28:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:28:47,042 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:28:47,052 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 00:28:47,053 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:28:47,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:28:47,053 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:28:47,054 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:28:47,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:28:47,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:28:47,054 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-01-21 00:28:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:28:47,058 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-01-21 00:28:47,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:28:47,058 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 00:28:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:28:47,058 INFO L225 Difference]: With dead ends: 42 [2018-01-21 00:28:47,058 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:28:47,059 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 00:28:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:28:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:28:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:28:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:28:47,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 00:28:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:28:47,059 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:28:47,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:28:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:28:47,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:28:47,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:28:47 BoogieIcfgContainer [2018-01-21 00:28:47,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:28:47,063 INFO L168 Benchmark]: Toolchain (without parser) took 1009.23 ms. Allocated memory was 305.1 MB in the beginning and 465.0 MB in the end (delta: 159.9 MB). Free memory was 264.5 MB in the beginning and 425.0 MB in the end (delta: -160.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:47,064 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:47,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.36 ms. Allocated memory is still 305.1 MB. Free memory was 264.5 MB in the beginning and 256.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-21 00:28:47,064 INFO L168 Benchmark]: Boogie Preprocessor took 36.24 ms. Allocated memory is still 305.1 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:28:47,065 INFO L168 Benchmark]: RCFGBuilder took 208.15 ms. Allocated memory is still 305.1 MB. Free memory was 254.4 MB in the beginning and 240.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:28:47,065 INFO L168 Benchmark]: TraceAbstraction took 562.60 ms. Allocated memory was 305.1 MB in the beginning and 465.0 MB in the end (delta: 159.9 MB). Free memory was 240.7 MB in the beginning and 425.0 MB in the end (delta: -184.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:28:47,067 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.36 ms. Allocated memory is still 305.1 MB. Free memory was 264.5 MB in the beginning and 256.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.24 ms. Allocated memory is still 305.1 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 208.15 ms. Allocated memory is still 305.1 MB. Free memory was 254.4 MB in the beginning and 240.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 562.60 ms. Allocated memory was 305.1 MB in the beginning and 465.0 MB in the end (delta: 159.9 MB). Free memory was 240.7 MB in the beginning and 425.0 MB in the end (delta: -184.3 MB). There was no memory consumed. 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 28 locations, 4 error locations. UNSAFE Result, 0.1s 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=28occurred 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 - PositiveResult [Line: 1]: 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: cstrcatErr0EnsuresViolation CFG has 4 procedures, 28 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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: [L11] char *s1; [L12] char *s2; [L13] CALL cstrcat(s1, s2) VAL [s1={3:-1}, s2={4:-2}] [L3] char *s = s1; VAL [s={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-2}, s2={4:-2}] [L4] EXPR, FCALL \read(*s) VAL [\read(*s)=0, s={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-2}, s2={4:-2}] [L4] COND FALSE !(*s != '\0') [L6] EXPR s++ [L6] EXPR s2++ VAL [s={3:0}, s++={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-2}, s2={4:-1}, s2++=0s2++={4:-2}] [L6] EXPR, FCALL *s++ = *s2++ VAL [s={3:0}, s++={3:-1}, s1={3:-1}, s1={3:-1}, s2={4:-1}, s2={4:-2}, s2++=0s2++={4:-2}] [L6] COND FALSE !((*s++ = *s2++) != '\0') [L8] RET return s1; VAL [\result={3:-1}, s={3:0}, s1={3:-1}, s1={3:-1}, s2={4:-1}, s2={4:-2}] [L13] cstrcat(s1, s2) VAL [cstrcat(s1, s2)={3:-1}, s1={3:-1}, s2={4:-2}] [L14] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 28 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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: 10]: 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 4 procedures, 28 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 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=28occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-28-47-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-28-47-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-28-47-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-28-47-075.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-28-47-075.csv Received shutdown request...