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_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:57:08,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:57:08,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:57:08,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:57:08,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:57:08,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:57:08,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:57:08,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:57:08,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:57:08,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:57:08,748 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:57:08,749 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:57:08,750 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:57:08,750 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:57:08,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:57:08,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:57:08,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:57:08,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:57:08,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:57:08,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:57:08,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:57:08,768 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:57:08,769 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:57:08,769 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_preciseopt.epf [2018-01-21 08:57:08,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:57:08,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:57:08,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:57:08,781 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:57:08,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:57:08,781 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:57:08,781 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:57:08,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:57:08,782 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:57:08,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:57:08,783 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:57:08,783 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:57:08,783 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:57:08,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:57:08,783 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:57:08,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:57:08,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:57:08,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:57:08,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:57:08,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:57:08,786 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:57:08,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:57:08,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:57:08,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:57:08,786 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:57:08,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:57:08,788 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:57:08,788 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:57:08,789 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:57:08,789 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:57:08,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:57:08,837 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:57:08,841 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:57:08,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:57:08,844 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:57:08,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test3_true-valid-memsafety_true-termination.i [2018-01-21 08:57:09,061 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:57:09,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:57:09,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:57:09,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:57:09,073 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:57:09,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f424e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09, skipping insertion in model container [2018-01-21 08:57:09,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,091 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:57:09,140 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:57:09,245 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:57:09,257 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:57:09,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09 WrapperNode [2018-01-21 08:57:09,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:57:09,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:57:09,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:57:09,263 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:57:09,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (1/1) ... [2018-01-21 08:57:09,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:57:09,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:57:09,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:57:09,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:57:09,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (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 08:57:09,347 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:57:09,347 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:57:09,347 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 08:57:09,348 INFO L136 BoogieDeclarations]: Found implementation of procedure h_safe [2018-01-21 08:57:09,348 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 08:57:09,348 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:57:09,348 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 08:57:09,349 INFO L128 BoogieDeclarations]: Found specification of procedure h_safe [2018-01-21 08:57:09,349 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 08:57:09,349 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:57:09,349 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:57:09,349 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:57:09,500 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:57:09,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:57:09 BoogieIcfgContainer [2018-01-21 08:57:09,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:57:09,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:57:09,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:57:09,503 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:57:09,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:57:09" (1/3) ... [2018-01-21 08:57:09,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56359e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:57:09, skipping insertion in model container [2018-01-21 08:57:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:57:09" (2/3) ... [2018-01-21 08:57:09,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56359e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:57:09, skipping insertion in model container [2018-01-21 08:57:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:57:09" (3/3) ... [2018-01-21 08:57:09,507 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test3_true-valid-memsafety_true-termination.i [2018-01-21 08:57:09,513 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:57:09,519 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 08:57:09,570 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:09,570 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:09,570 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:09,570 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:09,571 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:09,571 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:09,571 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:09,571 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 08:57:09,572 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 08:57:09,597 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:09,598 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:09,598 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 08:57:09,602 INFO L82 PathProgramCache]: Analyzing trace with hash 381050145, now seen corresponding path program 1 times [2018-01-21 08:57:09,604 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:09,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:09,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:09,652 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:09,652 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:09,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:09,764 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 08:57:09,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:09,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:57:09,766 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:09,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:57:09,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:57:09,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:09,782 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 08:57:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:09,971 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 08:57:09,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:57:09,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-21 08:57:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:09,982 INFO L225 Difference]: With dead ends: 36 [2018-01-21 08:57:09,982 INFO L226 Difference]: Without dead ends: 14 [2018-01-21 08:57:09,985 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-21 08:57:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-21 08:57:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-21 08:57:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-21 08:57:10,012 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-21 08:57:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:10,012 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-21 08:57:10,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:57:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-21 08:57:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 08:57:10,013 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,013 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:10,013 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 08:57:10,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1116876131, now seen corresponding path program 1 times [2018-01-21 08:57:10,014 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,016 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,079 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:57:10,089 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,090 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,100 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:10,100 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:10,100 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:10,100 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:10,100 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:10,100 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:10,100 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:10,100 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:57:10,101 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:57:10,102 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,103 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:57:10,103 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:57:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash 62755, now seen corresponding path program 1 times [2018-01-21 08:57:10,103 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,105 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,105 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,106 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,106 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,116 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:57:10,117 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,119 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:10,119 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:10,119 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:10,119 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:10,119 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:10,120 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:10,120 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:10,120 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:57:10,120 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 08:57:10,123 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,123 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 08:57:10,123 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:57:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash -264557971, now seen corresponding path program 1 times [2018-01-21 08:57:10,123 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,125 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,125 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:57:10,160 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:57:10,162 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,163 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,164 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,164 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,165 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,165 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:57:10,168 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:10,169 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:10,169 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:10,169 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:10,169 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:10,169 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:10,169 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:10,169 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:57:10,169 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:10,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 08:57:10,172 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,172 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 08:57:10,173 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:57:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash -880721244, now seen corresponding path program 1 times [2018-01-21 08:57:10,173 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,174 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,174 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:10,187 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:10,235 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 08:57:10,236 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:10,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:57:10,236 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:10,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:57:10,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:57:10,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,237 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 08:57:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:10,316 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 08:57:10,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:57:10,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 08:57:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:10,317 INFO L225 Difference]: With dead ends: 36 [2018-01-21 08:57:10,317 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:57:10,318 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:57:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:57:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:57:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:57:10,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 08:57:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:10,319 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:57:10,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:57:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:57:10,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:57:10,322 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:10,323 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:10,323 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:10,323 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:10,323 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:10,323 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:10,323 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:10,323 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h_safeErr0EnsuresViolation======== [2018-01-21 08:57:10,324 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 08:57:10,326 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,326 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:10,326 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h_safeErr0EnsuresViolation]=== [2018-01-21 08:57:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash 266316619, now seen corresponding path program 1 times [2018-01-21 08:57:10,326 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,328 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,328 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,328 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,328 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:10,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:10,369 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 08:57:10,370 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:10,370 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:57:10,370 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:10,370 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:57:10,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:57:10,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,371 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 08:57:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:10,409 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 08:57:10,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:57:10,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 08:57:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:10,410 INFO L225 Difference]: With dead ends: 36 [2018-01-21 08:57:10,410 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:57:10,411 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:57:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:57:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:57:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:57:10,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 08:57:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:10,412 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:57:10,412 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:57:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:57:10,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:57:10,414 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:57:10,414 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:57:10,415 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:57:10,415 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:57:10,415 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:57:10,415 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:57:10,415 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:57:10,415 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 08:57:10,415 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:57:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-01-21 08:57:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 08:57:10,418 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,418 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:10,418 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 08:57:10,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1983438874, now seen corresponding path program 1 times [2018-01-21 08:57:10,418 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,420 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,420 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,421 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:10,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:10,466 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 08:57:10,466 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:10,466 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:57:10,466 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:10,467 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:57:10,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:57:10,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,467 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2018-01-21 08:57:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:10,595 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-21 08:57:10,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:57:10,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-01-21 08:57:10,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:10,596 INFO L225 Difference]: With dead ends: 36 [2018-01-21 08:57:10,596 INFO L226 Difference]: Without dead ends: 23 [2018-01-21 08:57:10,597 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:57:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-21 08:57:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-01-21 08:57:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-21 08:57:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-01-21 08:57:10,601 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2018-01-21 08:57:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:10,602 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-01-21 08:57:10,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:57:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-01-21 08:57:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 08:57:10,603 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,603 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:10,603 INFO L371 AbstractCegarLoop]: === Iteration 2 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 08:57:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1357059945, now seen corresponding path program 1 times [2018-01-21 08:57:10,604 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,605 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,605 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:10,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:10,760 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 08:57:10,760 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:10,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 08:57:10,761 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:10,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 08:57:10,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 08:57:10,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:57:10,762 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2018-01-21 08:57:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:10,792 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-01-21 08:57:10,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 08:57:10,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-21 08:57:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:10,794 INFO L225 Difference]: With dead ends: 32 [2018-01-21 08:57:10,794 INFO L226 Difference]: Without dead ends: 22 [2018-01-21 08:57:10,795 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:57:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-01-21 08:57:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-01-21 08:57:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-01-21 08:57:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2018-01-21 08:57:10,800 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 19 [2018-01-21 08:57:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:10,801 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2018-01-21 08:57:10,801 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 08:57:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2018-01-21 08:57:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 08:57:10,802 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:57:10,802 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:57:10,802 INFO L371 AbstractCegarLoop]: === Iteration 3 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 08:57:10,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1167295915, now seen corresponding path program 1 times [2018-01-21 08:57:10,803 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:57:10,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,804 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:57:10,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:57:10,804 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:57:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:57:10,817 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:57:10,949 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 08:57:10,949 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:57:10,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 08:57:10,949 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:57:10,950 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 08:57:10,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 08:57:10,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-01-21 08:57:10,951 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 10 states. [2018-01-21 08:57:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:57:11,159 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-01-21 08:57:11,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 08:57:11,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-01-21 08:57:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:57:11,160 INFO L225 Difference]: With dead ends: 22 [2018-01-21 08:57:11,160 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:57:11,161 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-01-21 08:57:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:57:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:57:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:57:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:57:11,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-01-21 08:57:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:57:11,162 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:57:11,162 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 08:57:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:57:11,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:57:11,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:57:11 BoogieIcfgContainer [2018-01-21 08:57:11,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:57:11,166 INFO L168 Benchmark]: Toolchain (without parser) took 2103.79 ms. Allocated memory was 305.1 MB in the beginning and 467.7 MB in the end (delta: 162.5 MB). Free memory was 262.3 MB in the beginning and 328.0 MB in the end (delta: -65.7 MB). Peak memory consumption was 96.8 MB. Max. memory is 5.3 GB. [2018-01-21 08:57:11,167 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 305.1 MB. Free memory is still 268.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:57:11,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.09 ms. Allocated memory is still 305.1 MB. Free memory was 262.3 MB in the beginning and 248.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 5.3 GB. [2018-01-21 08:57:11,168 INFO L168 Benchmark]: Boogie Preprocessor took 33.03 ms. Allocated memory is still 305.1 MB. Free memory is still 248.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:57:11,168 INFO L168 Benchmark]: RCFGBuilder took 204.20 ms. Allocated memory is still 305.1 MB. Free memory was 248.3 MB in the beginning and 233.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 08:57:11,169 INFO L168 Benchmark]: TraceAbstraction took 1663.73 ms. Allocated memory was 305.1 MB in the beginning and 467.7 MB in the end (delta: 162.5 MB). Free memory was 233.4 MB in the beginning and 328.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 68.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:57:11,170 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 305.1 MB. Free memory is still 268.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 195.09 ms. Allocated memory is still 305.1 MB. Free memory was 262.3 MB in the beginning and 248.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.03 ms. Allocated memory is still 305.1 MB. Free memory is still 248.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 204.20 ms. Allocated memory is still 305.1 MB. Free memory was 248.3 MB in the beginning and 233.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1663.73 ms. Allocated memory was 305.1 MB in the beginning and 467.7 MB in the end (delta: 162.5 MB). Free memory was 233.4 MB in the beginning and 328.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 68.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1072]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1443] CALL entry_point() [L1438] CALL h_safe() [L1434] CALL ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 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=32occurred 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: [L1443] CALL entry_point() [L1438] CALL, EXPR h_safe() [L1434] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1434] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1434] RET return (int *)ldv_malloc(sizeof(int)); [L1438] EXPR h_safe() VAL [h_safe()={0:0}] [L1438] int *p = h_safe(); [L1439] COND FALSE, RET !(\read(*p)) VAL [p={0:0}] [L1443] entry_point() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 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=32occurred 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: 1442]: 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 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1433]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: h_safeErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 7 SDslu, 1 SDs, 0 SdLazy, 19 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1437]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: entry_pointErr0EnsuresViolation CFG has 6 procedures, 32 locations, 6 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 9 SDslu, 123 SDs, 0 SdLazy, 143 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 3917 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_08-57-11-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test3_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_08-57-11-182.csv Received shutdown request...