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_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:18:01,942 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:18:01,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:18:01,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:18:01,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:18:01,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:18:01,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:18:01,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:18:01,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:18:01,966 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:18:01,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:18:01,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:18:01,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:18:01,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:18:01,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:18:01,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:18:01,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:18:01,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:18:01,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:18:01,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:18:01,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:18:01,982 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:18:01,982 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:18:01,983 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:18:01,984 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:18:01,985 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:18:01,985 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:18:01,986 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:18:01,986 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:18:01,986 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:18:01,987 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:18:01,987 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 17:18:01,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:18:01,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:18:01,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:18:01,997 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:18:01,997 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:18:01,997 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:18:01,997 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:18:01,997 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:18:01,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:18:01,998 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:18:01,998 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:18:01,999 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:18:02,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:18:02,000 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:18:02,000 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:18:02,000 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:18:02,000 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:18:02,001 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:18:02,001 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:18:02,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:18:02,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:18:02,001 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:18:02,001 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:18:02,002 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:18:02,003 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:18:02,004 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:18:02,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:18:02,046 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:18:02,049 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:18:02,050 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:18:02,050 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:18:02,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-01-24 17:18:02,226 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:18:02,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:18:02,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:18:02,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:18:02,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:18:02,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d434187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02, skipping insertion in model container [2018-01-24 17:18:02,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,252 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:18:02,297 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:18:02,407 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:18:02,422 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:18:02,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02 WrapperNode [2018-01-24 17:18:02,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:18:02,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:18:02,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:18:02,431 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:18:02,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (1/1) ... [2018-01-24 17:18:02,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:18:02,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:18:02,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:18:02,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:18:02,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (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 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 17:18:02,512 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 17:18:02,513 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:18:02,514 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:18:02,514 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:18:02,633 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:18:02,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:18:02 BoogieIcfgContainer [2018-01-24 17:18:02,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:18:02,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:18:02,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:18:02,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:18:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:18:02" (1/3) ... [2018-01-24 17:18:02,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbe459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:18:02, skipping insertion in model container [2018-01-24 17:18:02,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:02" (2/3) ... [2018-01-24 17:18:02,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbe459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:18:02, skipping insertion in model container [2018-01-24 17:18:02,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:18:02" (3/3) ... [2018-01-24 17:18:02,639 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-01-24 17:18:02,645 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:18:02,650 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 17:18:02,686 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:18:02,686 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:18:02,686 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:18:02,686 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:18:02,686 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:18:02,686 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:18:02,686 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:18:02,686 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:18:02,687 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:18:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-24 17:18:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:18:02,705 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:02,706 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 17:18:02,706 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 17:18:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash -936099957, now seen corresponding path program 1 times [2018-01-24 17:18:02,714 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:02,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:02,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:02,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:02,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:02,819 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:02,929 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 17:18:02,931 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:02,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:18:02,932 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:02,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:18:02,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:18:02,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:18:02,954 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-01-24 17:18:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:03,136 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-01-24 17:18:03,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:18:03,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 17:18:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:03,149 INFO L225 Difference]: With dead ends: 43 [2018-01-24 17:18:03,149 INFO L226 Difference]: Without dead ends: 39 [2018-01-24 17:18:03,152 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 17:18:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-24 17:18:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-01-24 17:18:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-24 17:18:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-24 17:18:03,187 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 18 [2018-01-24 17:18:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:03,188 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-24 17:18:03,188 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:18:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-24 17:18:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:18:03,189 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:03,189 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 17:18:03,189 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 17:18:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash -936099956, now seen corresponding path program 1 times [2018-01-24 17:18:03,189 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:03,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:03,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,191 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:03,211 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:03,266 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 17:18:03,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:03,267 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:18:03,267 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:03,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:18:03,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:18:03,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:18:03,270 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2018-01-24 17:18:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:03,354 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-01-24 17:18:03,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:18:03,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 17:18:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:03,356 INFO L225 Difference]: With dead ends: 45 [2018-01-24 17:18:03,356 INFO L226 Difference]: Without dead ends: 44 [2018-01-24 17:18:03,358 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 17:18:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-24 17:18:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-01-24 17:18:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-24 17:18:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-01-24 17:18:03,368 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 18 [2018-01-24 17:18:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:03,369 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-01-24 17:18:03,369 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:18:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-01-24 17:18:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 17:18:03,370 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:03,370 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 17:18:03,370 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 17:18:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269641, now seen corresponding path program 1 times [2018-01-24 17:18:03,371 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:03,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,372 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:03,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,373 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:03,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:03,446 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 17:18:03,447 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:03,447 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:18:03,447 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:03,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:18:03,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:18:03,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:18:03,448 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 6 states. [2018-01-24 17:18:03,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:03,492 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-01-24 17:18:03,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:18:03,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-24 17:18:03,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:03,494 INFO L225 Difference]: With dead ends: 43 [2018-01-24 17:18:03,494 INFO L226 Difference]: Without dead ends: 42 [2018-01-24 17:18:03,495 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-24 17:18:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-24 17:18:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-01-24 17:18:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-24 17:18:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-01-24 17:18:03,504 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 20 [2018-01-24 17:18:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:03,504 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-01-24 17:18:03,504 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:18:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-01-24 17:18:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 17:18:03,505 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:03,505 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 17:18:03,505 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 17:18:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269642, now seen corresponding path program 1 times [2018-01-24 17:18:03,506 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:03,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,507 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:03,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,508 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:03,524 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:03,584 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 17:18:03,585 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:03,585 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:18:03,585 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:03,585 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:18:03,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:18:03,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:18:03,586 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2018-01-24 17:18:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:03,739 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-01-24 17:18:03,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:18:03,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-24 17:18:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:03,741 INFO L225 Difference]: With dead ends: 49 [2018-01-24 17:18:03,741 INFO L226 Difference]: Without dead ends: 48 [2018-01-24 17:18:03,741 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 17:18:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-24 17:18:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-01-24 17:18:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 17:18:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-01-24 17:18:03,747 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 20 [2018-01-24 17:18:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:03,748 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-01-24 17:18:03,748 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:18:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-01-24 17:18:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:18:03,749 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:03,749 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 17:18:03,749 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 17:18:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1026214949, now seen corresponding path program 1 times [2018-01-24 17:18:03,749 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:03,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:03,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:03,751 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:18:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:18:03,806 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 17:18:03,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 05:18:03 BoogieIcfgContainer [2018-01-24 17:18:03,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 17:18:03,836 INFO L168 Benchmark]: Toolchain (without parser) took 1609.38 ms. Allocated memory was 309.3 MB in the beginning and 473.4 MB in the end (delta: 164.1 MB). Free memory was 268.4 MB in the beginning and 384.5 MB in the end (delta: -116.1 MB). Peak memory consumption was 48.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:03,836 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 309.3 MB. Free memory is still 275.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:18:03,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.03 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 256.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:03,837 INFO L168 Benchmark]: Boogie Preprocessor took 31.72 ms. Allocated memory is still 309.3 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:03,837 INFO L168 Benchmark]: RCFGBuilder took 171.68 ms. Allocated memory is still 309.3 MB. Free memory was 254.0 MB in the beginning and 240.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:03,837 INFO L168 Benchmark]: TraceAbstraction took 1200.15 ms. Allocated memory was 309.3 MB in the beginning and 473.4 MB in the end (delta: 164.1 MB). Free memory was 240.5 MB in the beginning and 384.5 MB in the end (delta: -144.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:03,839 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 309.3 MB. Free memory is still 275.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 199.03 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 256.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.72 ms. Allocated memory is still 309.3 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 171.68 ms. Allocated memory is still 309.3 MB. Free memory was 254.0 MB in the beginning and 240.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1200.15 ms. Allocated memory was 309.3 MB in the beginning and 473.4 MB in the end (delta: 164.1 MB). Free memory was 240.5 MB in the beginning and 384.5 MB in the end (delta: -144.0 MB). Peak memory consumption was 20.1 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, 1.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.5s 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, 0.2s 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_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-18-03-845.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_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_17-18-03-845.csv Received shutdown request...