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.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:23:00,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:23:00,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:23:00,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:23:00,862 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:23:00,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:23:00,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:23:00,866 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:23:00,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:23:00,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:23:00,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:23:00,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:23:00,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:23:00,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:23:00,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:23:00,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:23:00,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:23:00,881 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:23:00,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:23:00,883 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:23:00,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 23:23:00,892 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.epf [2018-01-20 23:23:00,902 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:23:00,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:23:00,903 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:23:00,904 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:23:00,904 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:23:00,904 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:23:00,904 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:23:00,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:23:00,905 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:23:00,905 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:23:00,906 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:23:00,907 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:23:00,907 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:23:00,907 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:23:00,907 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:23:00,907 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:23:00,908 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:23:00,908 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:23:00,908 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:23:00,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:23:00,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:23:00,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:23:00,909 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:23:00,909 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:23:00,909 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:23:00,909 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:23:00,910 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:23:00,910 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:23:00,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:23:00,910 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:23:00,910 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:23:00,911 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:23:00,911 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:23:00,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:23:00,955 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:23:00,959 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:23:00,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:23:00,960 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:23:00,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-01-20 23:23:01,065 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:23:01,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:23:01,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:23:01,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:23:01,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:23:01,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11888612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01, skipping insertion in model container [2018-01-20 23:23:01,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,102 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:23:01,122 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:23:01,242 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:23:01,257 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:23:01,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01 WrapperNode [2018-01-20 23:23:01,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:23:01,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:23:01,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:23:01,264 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:23:01,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (1/1) ... [2018-01-20 23:23:01,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:23:01,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:23:01,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:23:01,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:23:01,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (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 [2018-01-20 23:23:01,345 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:23:01,346 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:23:01,346 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-01-20 23:23:01,346 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:23:01,346 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:23:01,346 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:23:01,346 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:23:01,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:23:01,501 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:23:01,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:23:01 BoogieIcfgContainer [2018-01-20 23:23:01,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:23:01,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:23:01,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:23:01,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:23:01,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:23:01" (1/3) ... [2018-01-20 23:23:01,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb04b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:23:01, skipping insertion in model container [2018-01-20 23:23:01,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:23:01" (2/3) ... [2018-01-20 23:23:01,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb04b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:23:01, skipping insertion in model container [2018-01-20 23:23:01,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:23:01" (3/3) ... [2018-01-20 23:23:01,509 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-01-20 23:23:01,519 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:23:01,527 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:23:01,571 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:01,571 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:01,571 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:01,572 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:01,572 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:01,572 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:01,572 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:01,572 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:23:01,573 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-20 23:23:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:23:01,593 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:01,594 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:23:01,595 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:23:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 87453, now seen corresponding path program 1 times [2018-01-20 23:23:01,603 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:01,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,646 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:01,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,646 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:01,696 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:23:01,703 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:01,708 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:01,708 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:01,708 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:01,709 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:01,709 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:01,709 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:01,709 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:01,709 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:23:01,709 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-20 23:23:01,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 23:23:01,711 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:01,711 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:01,711 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:23:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1566947830, now seen corresponding path program 1 times [2018-01-20 23:23:01,712 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:01,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,713 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:01,713 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,713 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:01,740 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:01,772 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:01,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:23:01,773 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:01,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:23:01,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:23:01,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:23:01,788 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-01-20 23:23:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:01,815 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-01-20 23:23:01,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:23:01,816 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-20 23:23:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:01,828 INFO L225 Difference]: With dead ends: 52 [2018-01-20 23:23:01,829 INFO L226 Difference]: Without dead ends: 29 [2018-01-20 23:23:01,832 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 [2018-01-20 23:23:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-20 23:23:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-20 23:23:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-20 23:23:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-01-20 23:23:01,943 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2018-01-20 23:23:01,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:01,943 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-01-20 23:23:01,944 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:23:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-01-20 23:23:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-20 23:23:01,944 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:01,945 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:01,945 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:23:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1029885663, now seen corresponding path program 1 times [2018-01-20 23:23:01,945 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:01,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:01,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:01,946 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:23:01,990 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:23:01,999 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:02,004 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:02,005 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:02,005 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:23:02,023 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:02,023 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:02,023 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:02,023 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:02,023 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:02,024 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:02,024 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:02,024 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:23:02,024 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-20 23:23:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-20 23:23:02,026 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:02,026 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:02,027 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:23:02,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1938032112, now seen corresponding path program 1 times [2018-01-20 23:23:02,027 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:02,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:02,028 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:02,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:02,028 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:02,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:02,055 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:02,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:23:02,055 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:02,056 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:23:02,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:23:02,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:23:02,057 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-01-20 23:23:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:02,061 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-01-20 23:23:02,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:23:02,061 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-20 23:23:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:02,062 INFO L225 Difference]: With dead ends: 52 [2018-01-20 23:23:02,062 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:23:02,062 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 [2018-01-20 23:23:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:23:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:23:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:23:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:23:02,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-20 23:23:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:02,064 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:23:02,064 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:23:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:23:02,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:23:02,067 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:23:02,067 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:23:02,067 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:23:02,067 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:23:02,067 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:23:02,067 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:23:02,068 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:23:02,068 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncatErr0EnsuresViolation======== [2018-01-20 23:23:02,068 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:23:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-20 23:23:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-20 23:23:02,070 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:23:02,070 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:23:02,070 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncatErr0EnsuresViolation]=== [2018-01-20 23:23:02,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1541674444, now seen corresponding path program 1 times [2018-01-20 23:23:02,071 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:23:02,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:02,072 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:23:02,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:23:02,072 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:23:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:23:02,082 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:23:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:23:02,095 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:23:02,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:23:02,095 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:23:02,095 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:23:02,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:23:02,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:23:02,096 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-01-20 23:23:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:23:02,100 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2018-01-20 23:23:02,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:23:02,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-20 23:23:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:23:02,101 INFO L225 Difference]: With dead ends: 52 [2018-01-20 23:23:02,101 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:23:02,101 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 [2018-01-20 23:23:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:23:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:23:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:23:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:23:02,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-20 23:23:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:23:02,102 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:23:02,102 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:23:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:23:02,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:23:02,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:23:02 BoogieIcfgContainer [2018-01-20 23:23:02,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:23:02,106 INFO L168 Benchmark]: Toolchain (without parser) took 1040.18 ms. Allocated memory was 307.2 MB in the beginning and 462.9 MB in the end (delta: 155.7 MB). Free memory was 266.5 MB in the beginning and 421.1 MB in the end (delta: -154.5 MB). Peak memory consumption was 1.2 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:02,108 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 307.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:23:02,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.09 ms. Allocated memory is still 307.2 MB. Free memory was 266.5 MB in the beginning and 256.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:02,109 INFO L168 Benchmark]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 307.2 MB. Free memory is still 256.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:23:02,109 INFO L168 Benchmark]: RCFGBuilder took 201.22 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 240.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 5.3 GB. [2018-01-20 23:23:02,109 INFO L168 Benchmark]: TraceAbstraction took 602.59 ms. Allocated memory was 307.2 MB in the beginning and 462.9 MB in the end (delta: 155.7 MB). Free memory was 240.1 MB in the beginning and 421.1 MB in the end (delta: -181.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:23:02,112 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 307.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 192.09 ms. Allocated memory is still 307.2 MB. Free memory was 266.5 MB in the beginning and 256.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 307.2 MB. Free memory is still 256.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 201.22 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 240.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 602.59 ms. Allocated memory was 307.2 MB in the beginning and 462.9 MB in the end (delta: 155.7 MB). Free memory was 240.1 MB in the beginning and 421.1 MB in the end (delta: -181.0 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, 33 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=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L19] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={4:3}, s2={5:1}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={4:3}, s1={4:3}, s1={4:3}, s2={5:1}, s2={5:1}] [L5] EXPR, FCALL \read(*s) VAL [\old(n)=0, \read(*s)=0, n=0, s={4:3}, s1={4:3}, s1={4:3}, s2={5:1}, s2={5:1}] [L5] COND FALSE !(*s != '\0') [L7] n != 0 && (*s = *s2++) != '\0' VAL [\old(n)=0, n=0, n != 0 && (*s = *s2++) != '\0'=0, s={4:3}, s1={4:3}, s1={4:3}, s2={5:1}, s2={5:1}] [L7] COND FALSE !(n != 0 && (*s = *s2++) != '\0') [L11] EXPR, FCALL \read(*s) VAL [\old(n)=0, \read(*s)=0, n=0, s={4:3}, s1={4:3}, s1={4:3}, s2={5:1}, s2={5:1}] [L11] COND FALSE !(*s != '\0') [L13] RET return s1; VAL [\old(n)=0, \result={4:3}, n=0, s={4:3}, s1={4:3}, s1={4:3}, s2={5:1}, s2={5:1}] [L19] cstrncat(s1, s2, n) VAL [cstrncat(s1, s2, n)={4:3}, n=0, s1={4:3}, s2={5:1}] [L20] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 33 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 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=33occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 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: 15]: 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, 33 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 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=33occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 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: 2]: 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: cstrncatErr0EnsuresViolation CFG has 4 procedures, 33 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 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=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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/cstrncat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-23-02-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-23-02-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-23-02-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-23-02-123.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncat_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-23-02-123.csv Received shutdown request...