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_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-29 23:59:55,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 23:59:55,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 23:59:55,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 23:59:55,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 23:59:55,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 23:59:55,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 23:59:55,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 23:59:55,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 23:59:55,535 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 23:59:55,535 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 23:59:55,536 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 23:59:55,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 23:59:55,537 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 23:59:55,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 23:59:55,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 23:59:55,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 23:59:55,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 23:59:55,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 23:59:55,546 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 23:59:55,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-29 23:59:55,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-29 23:59:55,549 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-29 23:59:55,550 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-29 23:59:55,551 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-29 23:59:55,552 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-29 23:59:55,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-29 23:59:55,553 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-29 23:59:55,553 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-29 23:59:55,554 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 23:59:55,554 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 23:59:55,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-29 23:59:55,564 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 23:59:55,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 23:59:55,565 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 23:59:55,565 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 23:59:55,565 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 23:59:55,566 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 23:59:55,566 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 23:59:55,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 23:59:55,567 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 23:59:55,567 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 23:59:55,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 23:59:55,567 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 23:59:55,567 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 23:59:55,568 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 23:59:55,568 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 23:59:55,568 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 23:59:55,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 23:59:55,568 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 23:59:55,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 23:59:55,569 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 23:59:55,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 23:59:55,569 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 23:59:55,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 23:59:55,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 23:59:55,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 23:59:55,570 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 23:59:55,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 23:59:55,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 23:59:55,571 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 23:59:55,571 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 23:59:55,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 23:59:55,571 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 23:59:55,572 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 23:59:55,572 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 23:59:55,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 23:59:55,618 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 23:59:55,622 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 23:59:55,623 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 23:59:55,624 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 23:59:55,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-01-29 23:59:55,802 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 23:59:55,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 23:59:55,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 23:59:55,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 23:59:55,812 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 23:59:55,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:59:55" (1/1) ... [2018-01-29 23:59:55,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca3c60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:55, skipping insertion in model container [2018-01-29 23:59:55,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:59:55" (1/1) ... [2018-01-29 23:59:55,828 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:59:55,874 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:59:55,979 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:59:55,993 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:59:56,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56 WrapperNode [2018-01-29 23:59:56,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 23:59:56,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 23:59:56,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 23:59:56,002 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 23:59:56,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (1/1) ... [2018-01-29 23:59:56,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 23:59:56,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 23:59:56,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 23:59:56,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 23:59:56,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (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 [2018-01-29 23:59:56,076 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-29 23:59:56,077 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 23:59:56,077 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 23:59:56,077 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 23:59:56,077 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-29 23:59:56,077 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-29 23:59:56,077 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 23:59:56,078 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 23:59:56,208 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 23:59:56,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:59:56 BoogieIcfgContainer [2018-01-29 23:59:56,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 23:59:56,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 23:59:56,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 23:59:56,212 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 23:59:56,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:59:55" (1/3) ... [2018-01-29 23:59:56,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:59:56, skipping insertion in model container [2018-01-29 23:59:56,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:59:56" (2/3) ... [2018-01-29 23:59:56,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:59:56, skipping insertion in model container [2018-01-29 23:59:56,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:59:56" (3/3) ... [2018-01-29 23:59:56,215 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-01-29 23:59:56,221 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 23:59:56,227 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-29 23:59:56,274 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 23:59:56,274 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 23:59:56,274 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 23:59:56,274 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 23:59:56,274 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 23:59:56,275 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 23:59:56,275 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 23:59:56,275 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 23:59:56,276 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 23:59:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-29 23:59:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-29 23:59:56,302 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:59:56,303 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:59:56,303 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 23:59:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1520633124, now seen corresponding path program 1 times [2018-01-29 23:59:56,310 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:59:56,311 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:59:56,365 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,365 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:59:56,365 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:59:56,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:59:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:59:56,531 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:59:56,531 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:59:56,532 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:59:56,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:59:56,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:59:56,545 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2018-01-29 23:59:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:59:56,704 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-01-29 23:59:56,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:59:56,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-29 23:59:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:59:56,715 INFO L225 Difference]: With dead ends: 51 [2018-01-29 23:59:56,715 INFO L226 Difference]: Without dead ends: 47 [2018-01-29 23:59:56,718 INFO L553 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 [2018-01-29 23:59:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-01-29 23:59:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-01-29 23:59:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-29 23:59:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-01-29 23:59:56,748 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 24 [2018-01-29 23:59:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:59:56,748 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-01-29 23:59:56,748 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:59:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-01-29 23:59:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-29 23:59:56,749 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:59:56,749 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:59:56,749 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 23:59:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1520633123, now seen corresponding path program 1 times [2018-01-29 23:59:56,750 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:59:56,750 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:59:56,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,752 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:59:56,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:59:56,772 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:59:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:59:56,846 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:59:56,846 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:59:56,848 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:59:56,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:59:56,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:59:56,849 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2018-01-29 23:59:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:59:56,949 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-01-29 23:59:56,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:59:56,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-29 23:59:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:59:56,951 INFO L225 Difference]: With dead ends: 53 [2018-01-29 23:59:56,951 INFO L226 Difference]: Without dead ends: 52 [2018-01-29 23:59:56,952 INFO L553 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 [2018-01-29 23:59:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-29 23:59:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-01-29 23:59:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-29 23:59:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-01-29 23:59:56,962 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 24 [2018-01-29 23:59:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:59:56,962 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-01-29 23:59:56,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:59:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-01-29 23:59:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-29 23:59:56,963 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:59:56,963 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:59:56,963 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 23:59:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1218005098, now seen corresponding path program 1 times [2018-01-29 23:59:56,963 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:59:56,964 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:59:56,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,965 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:59:56,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:59:56,986 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:59:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:59:57,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:59:57,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-29 23:59:57,039 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 23:59:57,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 23:59:57,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:59:57,040 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 6 states. [2018-01-29 23:59:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:59:57,127 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-01-29 23:59:57,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-29 23:59:57,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-29 23:59:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:59:57,129 INFO L225 Difference]: With dead ends: 51 [2018-01-29 23:59:57,129 INFO L226 Difference]: Without dead ends: 50 [2018-01-29 23:59:57,129 INFO L553 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 [2018-01-29 23:59:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-29 23:59:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-01-29 23:59:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-29 23:59:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-01-29 23:59:57,136 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 25 [2018-01-29 23:59:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:59:57,136 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-01-29 23:59:57,136 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 23:59:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-01-29 23:59:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-29 23:59:57,137 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:59:57,137 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:59:57,137 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 23:59:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1218005099, now seen corresponding path program 1 times [2018-01-29 23:59:57,137 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:59:57,138 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:59:57,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:57,139 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:59:57,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:59:57,150 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:59:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:59:57,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:59:57,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-29 23:59:57,204 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 23:59:57,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 23:59:57,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:59:57,205 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 6 states. [2018-01-29 23:59:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:59:57,354 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-01-29 23:59:57,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-29 23:59:57,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-29 23:59:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:59:57,356 INFO L225 Difference]: With dead ends: 57 [2018-01-29 23:59:57,356 INFO L226 Difference]: Without dead ends: 56 [2018-01-29 23:59:57,357 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-29 23:59:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-29 23:59:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-01-29 23:59:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-29 23:59:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2018-01-29 23:59:57,366 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 25 [2018-01-29 23:59:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:59:57,367 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2018-01-29 23:59:57,367 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 23:59:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2018-01-29 23:59:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-29 23:59:57,368 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:59:57,368 INFO L350 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, 1, 1, 1, 1, 1] [2018-01-29 23:59:57,368 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-29 23:59:57,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1078472892, now seen corresponding path program 1 times [2018-01-29 23:59:57,369 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:59:57,369 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:59:57,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:57,370 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:59:57,370 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:59:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 23:59:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 23:59:57,422 INFO L409 BasicCegarLoop]: Counterexample might be feasible [2018-01-29 23:59:57,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 11:59:57 BoogieIcfgContainer [2018-01-29 23:59:57,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 23:59:57,450 INFO L168 Benchmark]: Toolchain (without parser) took 1647.00 ms. Allocated memory was 302.0 MB in the beginning and 456.1 MB in the end (delta: 154.1 MB). Free memory was 258.9 MB in the beginning and 360.5 MB in the end (delta: -101.6 MB). Peak memory consumption was 52.5 MB. Max. memory is 5.3 GB. [2018-01-29 23:59:57,451 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 23:59:57,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.44 ms. Allocated memory is still 302.0 MB. Free memory was 258.9 MB in the beginning and 245.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-29 23:59:57,451 INFO L168 Benchmark]: Boogie Preprocessor took 31.34 ms. Allocated memory is still 302.0 MB. Free memory was 245.9 MB in the beginning and 244.9 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-29 23:59:57,451 INFO L168 Benchmark]: RCFGBuilder took 175.32 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 229.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:59:57,452 INFO L168 Benchmark]: TraceAbstraction took 1239.76 ms. Allocated memory was 302.0 MB in the beginning and 456.1 MB in the end (delta: 154.1 MB). Free memory was 229.7 MB in the beginning and 360.5 MB in the end (delta: -130.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:59:57,453 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.44 ms. Allocated memory is still 302.0 MB. Free memory was 258.9 MB in the beginning and 245.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.34 ms. Allocated memory is still 302.0 MB. Free memory was 245.9 MB in the beginning and 244.9 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 175.32 ms. Allocated memory is still 302.0 MB. Free memory was 244.9 MB in the beginning and 229.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1239.76 ms. Allocated memory was 302.0 MB in the beginning and 456.1 MB in the end (delta: 154.1 MB). Free memory was 229.7 MB in the beginning and 360.5 MB in the end (delta: -130.9 MB). Peak memory consumption was 23.3 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: IVAL [\old(a8)=5, \old(a8)=8, a8={5:8}] [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() VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, __VERIFIER_nondet_int()=1, a8={0:0}, size=4] [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)) VAL [\old(a8)=0, \old(a8)=0, a8={7:0}, ldv_malloc(sizeof(int))={7:0}] [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, 40 locations, 3 error locations. UNSAFE Result, 1.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 97 SDslu, 396 SDs, 0 SdLazy, 120 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.0s DumpTime, 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, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 4478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: 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_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_23-59-57-459.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_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_23-59-57-459.csv Received shutdown request...