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/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 13:23:34,020 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 13:23:34,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 13:23:34,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 13:23:34,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 13:23:34,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 13:23:34,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 13:23:34,044 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 13:23:34,047 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 13:23:34,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 13:23:34,048 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 13:23:34,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 13:23:34,050 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 13:23:34,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 13:23:34,052 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 13:23:34,055 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 13:23:34,057 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 13:23:34,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 13:23:34,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 13:23:34,062 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 13:23:34,064 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 13:23:34,064 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 13:23:34,064 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 13:23:34,066 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 13:23:34,066 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 13:23:34,068 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 13:23:34,068 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 13:23:34,069 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 13:23:34,069 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 13:23:34,069 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 13:23:34,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 13:23:34,070 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf [2018-01-24 13:23:34,080 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 13:23:34,081 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 13:23:34,081 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 13:23:34,082 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 13:23:34,082 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 13:23:34,082 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 13:23:34,082 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 13:23:34,083 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 13:23:34,083 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 13:23:34,083 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 13:23:34,084 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 13:23:34,085 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 13:23:34,085 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 13:23:34,085 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 13:23:34,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 13:23:34,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 13:23:34,086 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 13:23:34,086 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 13:23:34,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:23:34,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 13:23:34,086 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 13:23:34,087 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 13:23:34,088 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 13:23:34,089 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 13:23:34,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 13:23:34,138 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 13:23:34,142 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 13:23:34,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 13:23:34,144 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 13:23:34,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-01-24 13:23:34,345 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 13:23:34,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 13:23:34,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 13:23:34,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 13:23:34,356 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 13:23:34,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34, skipping insertion in model container [2018-01-24 13:23:34,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,374 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:23:34,422 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:23:34,533 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:23:34,549 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:23:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34 WrapperNode [2018-01-24 13:23:34,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 13:23:34,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 13:23:34,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 13:23:34,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 13:23:34,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (1/1) ... [2018-01-24 13:23:34,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 13:23:34,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 13:23:34,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 13:23:34,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 13:23:34,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (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 [2018-01-24 13:23:34,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 13:23:34,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 13:23:34,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 13:23:34,641 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-01-24 13:23:34,642 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-01-24 13:23:34,642 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 13:23:34,642 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 13:23:34,642 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-01-24 13:23:34,643 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-01-24 13:23:34,643 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 13:23:34,643 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 13:23:34,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 13:23:34,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 13:23:34,804 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 13:23:34,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:23:34 BoogieIcfgContainer [2018-01-24 13:23:34,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 13:23:34,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 13:23:34,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 13:23:34,808 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 13:23:34,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 01:23:34" (1/3) ... [2018-01-24 13:23:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc06a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:23:34, skipping insertion in model container [2018-01-24 13:23:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:34" (2/3) ... [2018-01-24 13:23:34,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc06a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:23:34, skipping insertion in model container [2018-01-24 13:23:34,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:23:34" (3/3) ... [2018-01-24 13:23:34,813 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-01-24 13:23:34,823 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 13:23:34,831 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 13:23:34,881 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 13:23:34,881 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 13:23:34,882 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 13:23:34,882 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 13:23:34,882 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 13:23:34,882 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 13:23:34,882 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 13:23:34,882 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 13:23:34,883 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 13:23:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-24 13:23:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 13:23:34,905 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:34,906 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:34,906 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 13:23:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash -936099957, now seen corresponding path program 1 times [2018-01-24 13:23:34,912 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:34,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:34,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:34,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:34,963 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:35,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:35,143 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:35,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 13:23:35,143 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:35,146 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:23:35,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:23:35,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:23:35,159 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-01-24 13:23:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:35,306 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-01-24 13:23:35,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:23:35,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 13:23:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:35,319 INFO L225 Difference]: With dead ends: 43 [2018-01-24 13:23:35,319 INFO L226 Difference]: Without dead ends: 39 [2018-01-24 13:23:35,322 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 13:23:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-24 13:23:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-01-24 13:23:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-24 13:23:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-24 13:23:35,354 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 18 [2018-01-24 13:23:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:35,354 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-24 13:23:35,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:23:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-24 13:23:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 13:23:35,355 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:35,355 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:35,355 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 13:23:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash -936099956, now seen corresponding path program 1 times [2018-01-24 13:23:35,356 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:35,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:35,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,358 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:35,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:35,437 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:35,437 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 13:23:35,437 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:35,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:23:35,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:23:35,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:23:35,440 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2018-01-24 13:23:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:35,520 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-01-24 13:23:35,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:23:35,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 13:23:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:35,522 INFO L225 Difference]: With dead ends: 45 [2018-01-24 13:23:35,522 INFO L226 Difference]: Without dead ends: 44 [2018-01-24 13:23:35,523 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 13:23:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-24 13:23:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-01-24 13:23:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-24 13:23:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-01-24 13:23:35,535 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 18 [2018-01-24 13:23:35,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:35,536 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-01-24 13:23:35,536 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:23:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-01-24 13:23:35,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 13:23:35,537 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:35,537 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] [2018-01-24 13:23:35,538 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 13:23:35,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269641, now seen corresponding path program 1 times [2018-01-24 13:23:35,538 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:35,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:35,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,540 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:35,563 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:35,654 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:35,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 13:23:35,654 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:35,655 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:35,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:35,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:35,655 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 6 states. [2018-01-24 13:23:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:35,756 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-01-24 13:23:35,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 13:23:35,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-24 13:23:35,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:35,758 INFO L225 Difference]: With dead ends: 43 [2018-01-24 13:23:35,759 INFO L226 Difference]: Without dead ends: 42 [2018-01-24 13:23:35,759 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-24 13:23:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-24 13:23:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-01-24 13:23:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-24 13:23:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-01-24 13:23:35,768 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 20 [2018-01-24 13:23:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:35,768 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-01-24 13:23:35,768 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-01-24 13:23:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 13:23:35,770 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:35,770 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] [2018-01-24 13:23:35,770 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 13:23:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269642, now seen corresponding path program 1 times [2018-01-24 13:23:35,770 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:35,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:35,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,773 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:35,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:35,851 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:35,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 13:23:35,851 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:35,851 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:35,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:35,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:35,852 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2018-01-24 13:23:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:35,983 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-01-24 13:23:35,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 13:23:35,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-24 13:23:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:35,985 INFO L225 Difference]: With dead ends: 49 [2018-01-24 13:23:35,985 INFO L226 Difference]: Without dead ends: 48 [2018-01-24 13:23:35,985 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 13:23:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-24 13:23:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-01-24 13:23:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 13:23:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-01-24 13:23:35,994 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 20 [2018-01-24 13:23:35,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:35,995 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-01-24 13:23:35,995 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-01-24 13:23:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 13:23:35,996 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:35,996 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:35,996 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 13:23:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1026214949, now seen corresponding path program 1 times [2018-01-24 13:23:35,997 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:35,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,999 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:35,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:35,999 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 13:23:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 13:23:36,052 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 13:23:36,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 01:23:36 BoogieIcfgContainer [2018-01-24 13:23:36,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 13:23:36,082 INFO L168 Benchmark]: Toolchain (without parser) took 1735.89 ms. Allocated memory was 308.3 MB in the beginning and 469.2 MB in the end (delta: 161.0 MB). Free memory was 267.3 MB in the beginning and 381.4 MB in the end (delta: -114.1 MB). Peak memory consumption was 46.9 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:36,082 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 308.3 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:23:36,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.66 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 253.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:36,083 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 308.3 MB. Free memory is still 253.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:23:36,083 INFO L168 Benchmark]: RCFGBuilder took 212.02 ms. Allocated memory is still 308.3 MB. Free memory was 253.2 MB in the beginning and 238.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:36,083 INFO L168 Benchmark]: TraceAbstraction took 1275.18 ms. Allocated memory was 308.3 MB in the beginning and 469.2 MB in the end (delta: 161.0 MB). Free memory was 238.7 MB in the beginning and 381.4 MB in the end (delta: -142.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:36,085 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 308.3 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.66 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 253.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 308.3 MB. Free memory is still 253.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 212.02 ms. Allocated memory is still 308.3 MB. Free memory was 253.2 MB in the beginning and 238.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1275.18 ms. Allocated memory was 308.3 MB in the beginning and 469.2 MB in the end (delta: 161.0 MB). Free memory was 238.7 MB in the beginning and 381.4 MB in the end (delta: -142.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L1434] int *a8; VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1453] CALL entry_point() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1446] CALL alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, a8={0:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, a8={0:0}, malloc(size)={7:0}, size=4] [L1074] RET return malloc(size); VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, \result={7:0}, a8={0:0}, malloc(size)={7:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, a8={0:0}, ldv_malloc(sizeof(int))={7:0}] [L1437] RET a8 = (int *)ldv_malloc(sizeof(int)) [L1446] alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1447] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1441] FCALL free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1448] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] [L1441] FCALL free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 3 error locations. UNSAFE Result, 1.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 84 SDslu, 316 SDs, 0 SdLazy, 116 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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_test8_2_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_13-23-36-090.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test8_2_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_13-23-36-090.csv Received shutdown request...