java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:36:14,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:14,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:14,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:14,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:14,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:14,041 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:14,042 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:14,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:14,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:14,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:14,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:14,047 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:14,048 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:14,049 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:14,052 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:14,054 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:14,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:14,057 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:14,059 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:14,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:36:14,066 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:36:14,067 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:36:14,067 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:36:14,076 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:14,076 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:14,077 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:14,077 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:14,077 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:14,077 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:14,077 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:14,077 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:14,078 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:14,078 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:14,078 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:14,078 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:14,078 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:14,079 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:14,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:14,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:14,080 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:14,080 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:14,080 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:14,081 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:14,081 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:14,082 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:14,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:14,082 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:14,082 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:14,082 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:14,083 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:14,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:14,127 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:14,130 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:14,131 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:14,131 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:14,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:14,279 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:14,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:14,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:14,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:14,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:14,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adf5c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14, skipping insertion in model container [2018-01-21 05:36:14,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,306 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:14,345 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:14,466 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:14,484 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:14,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14 WrapperNode [2018-01-21 05:36:14,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:14,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:14,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:14,494 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:14,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (1/1) ... [2018-01-21 05:36:14,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:14,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:14,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:14,533 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:14,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (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 05:36:14,586 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:14,586 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:14,586 INFO L136 BoogieDeclarations]: Found implementation of procedure strlen_rec [2018-01-21 05:36:14,586 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:36:14,587 INFO L128 BoogieDeclarations]: Found specification of procedure strlen_rec [2018-01-21 05:36:14,588 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:14,588 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:14,588 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:14,754 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:14,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:14 BoogieIcfgContainer [2018-01-21 05:36:14,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:14,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:14,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:14,757 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:14,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:14" (1/3) ... [2018-01-21 05:36:14,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51801dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:14, skipping insertion in model container [2018-01-21 05:36:14,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:14" (2/3) ... [2018-01-21 05:36:14,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51801dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:14, skipping insertion in model container [2018-01-21 05:36:14,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:14" (3/3) ... [2018-01-21 05:36:14,761 INFO L105 eAbstractionObserver]: Analyzing ICFG rec_strlen-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:14,767 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:14,772 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:14,818 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:14,818 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:14,818 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:14,818 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:14,818 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:14,818 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:14,818 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:14,818 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:14,819 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-01-21 05:36:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:14,839 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:14,840 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:14,840 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:14,846 INFO L82 PathProgramCache]: Analyzing trace with hash 61506, now seen corresponding path program 1 times [2018-01-21 05:36:14,849 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:14,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:14,896 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:14,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:14,896 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:14,955 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:14,962 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:14,968 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:14,968 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:14,969 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:14,969 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:14,969 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:14,969 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:14,969 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:14,969 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:14,969 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-01-21 05:36:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 05:36:14,972 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:14,972 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:14,972 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:14,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1639648714, now seen corresponding path program 1 times [2018-01-21 05:36:14,973 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:14,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:14,974 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:14,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:14,975 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:15,031 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:15,035 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:15,037 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:15,038 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:15,038 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:15,050 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:15,050 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:15,051 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:15,051 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:15,051 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:15,051 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:15,051 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:15,051 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:36:15,051 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-01-21 05:36:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:36:15,054 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:15,055 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:15,055 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:15,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2017346409, now seen corresponding path program 1 times [2018-01-21 05:36:15,055 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:15,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:15,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:15,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:15,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:15,089 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:15,314 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 05:36:15,316 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:15,316 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:36:15,316 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:15,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:36:15,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:36:15,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:36:15,332 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-01-21 05:36:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:15,474 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-01-21 05:36:15,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:15,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-21 05:36:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:15,482 INFO L225 Difference]: With dead ends: 29 [2018-01-21 05:36:15,482 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:15,484 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:36:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:15,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 05:36:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:15,506 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:15,506 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:36:15,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:15,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:15,508 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:15,509 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:15,509 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:15,509 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:15,509 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:15,509 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:15,509 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:15,509 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == strlen_recErr0EnsuresViolation======== [2018-01-21 05:36:15,510 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-01-21 05:36:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-21 05:36:15,512 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:15,512 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:15,512 INFO L371 AbstractCegarLoop]: === Iteration 1 === [strlen_recErr0EnsuresViolation]=== [2018-01-21 05:36:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 605559361, now seen corresponding path program 1 times [2018-01-21 05:36:15,513 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:15,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:15,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:15,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:15,514 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:15,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:15,544 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 05:36:15,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:15,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-01-21 05:36:15,544 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:15,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:15,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:15,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:15,545 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-01-21 05:36:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:15,549 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-01-21 05:36:15,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:15,549 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-21 05:36:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:15,549 INFO L225 Difference]: With dead ends: 29 [2018-01-21 05:36:15,550 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:15,550 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 05:36:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:15,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-21 05:36:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:15,551 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:15,551 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:15,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:15,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:36:15 BoogieIcfgContainer [2018-01-21 05:36:15,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:36:15,554 INFO L168 Benchmark]: Toolchain (without parser) took 1274.77 ms. Allocated memory was 302.0 MB in the beginning and 458.2 MB in the end (delta: 156.2 MB). Free memory was 258.2 MB in the beginning and 407.6 MB in the end (delta: -149.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:15,555 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 302.0 MB. Free memory is still 264.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:15,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.48 ms. Allocated memory is still 302.0 MB. Free memory was 257.2 MB in the beginning and 248.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:15,556 INFO L168 Benchmark]: Boogie Preprocessor took 38.34 ms. Allocated memory is still 302.0 MB. Free memory was 248.1 MB in the beginning and 246.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:15,556 INFO L168 Benchmark]: RCFGBuilder took 222.75 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 232.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:15,557 INFO L168 Benchmark]: TraceAbstraction took 798.13 ms. Allocated memory was 302.0 MB in the beginning and 458.2 MB in the end (delta: 156.2 MB). Free memory was 232.1 MB in the beginning and 407.6 MB in the end (delta: -175.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:15,559 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 302.0 MB. Free memory is still 264.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.48 ms. Allocated memory is still 302.0 MB. Free memory was 257.2 MB in the beginning and 248.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.34 ms. Allocated memory is still 302.0 MB. Free memory was 248.1 MB in the beginning and 246.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 222.75 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 232.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 798.13 ms. Allocated memory was 302.0 MB in the beginning and 458.2 MB in the end (delta: 156.2 MB). Free memory was 232.1 MB in the beginning and 407.6 MB in the end (delta: -175.5 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, 29 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=29occurred 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: [L547] int length1 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 VAL [length1=1] [L551] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={2:0}, length1=1] [L551] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={2:0}, length1=1, nondetString1={2:0}] [L552] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={2:0}, length1=1, nondetString1={2:0}] [L553] CALL strlen_rec(nondetString1) VAL [p={2:0}] [L541] EXPR, FCALL \read(*p) VAL [\read(*p)=0, p={2:0}, p={2:0}] [L541] COND TRUE *p == '\0' [L542] RET return 0; VAL [\result=0, p={2:0}, p={2:0}] [L553] strlen_rec(nondetString1) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 29 locations, 4 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 22 NumberOfCodeBlocks, 22 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: 546]: 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, 29 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 8 SDslu, 5 SDs, 0 SdLazy, 35 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1539 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: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: strlen_recErr0EnsuresViolation CFG has 4 procedures, 29 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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/rec_strlen-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-36-15-567.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-36-15-567.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-36-15-567.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-36-15-567.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-36-15-567.csv Received shutdown request...