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 0.1.23-5f7ec6e [2018-01-31 09:03:57,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:03:57,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:03:57,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:03:57,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:03:57,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:03:57,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:03:57,352 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:03:57,354 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:03:57,355 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:03:57,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:03:57,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:03:57,357 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:03:57,358 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:03:57,359 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:03:57,361 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:03:57,363 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:03:57,365 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:03:57,366 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:03:57,368 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:03:57,370 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:03:57,370 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:03:57,371 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:03:57,372 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:03:57,373 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:03:57,374 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:03:57,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:03:57,375 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:03:57,375 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:03:57,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:03:57,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:03:57,376 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 [2018-01-31 09:03:57,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:03:57,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:03:57,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:03:57,388 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:03:57,388 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:03:57,389 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:03:57,389 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:03:57,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:03:57,390 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:03:57,390 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:03:57,390 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:03:57,390 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:03:57,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:03:57,391 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:03:57,391 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:03:57,391 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:03:57,391 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:03:57,391 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:03:57,392 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:03:57,392 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:03:57,392 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:03:57,392 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:03:57,392 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:03:57,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:03:57,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:03:57,393 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:03:57,393 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:03:57,393 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:03:57,394 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:03:57,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:03:57,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:03:57,394 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:03:57,395 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:03:57,395 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:03:57,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:03:57,443 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:03:57,445 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:03:57,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:03:57,447 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:03:57,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-01-31 09:03:57,666 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:03:57,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:03:57,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:03:57,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:03:57,686 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:03:57,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:57,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159fe893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57, skipping insertion in model container [2018-01-31 09:03:57,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:57,712 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:03:57,786 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:03:57,955 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:03:57,983 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:03:58,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57 WrapperNode [2018-01-31 09:03:58,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:03:58,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:03:58,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:03:58,001 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:03:58,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (1/1) ... [2018-01-31 09:03:58,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:03:58,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:03:58,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:03:58,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:03:58,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (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 [2018-01-31 09:03:58,122 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-31 09:03:58,123 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:03:58,123 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:03:58,123 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:03:58,123 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-01-31 09:03:58,124 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-01-31 09:03:58,125 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-31 09:03:58,125 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:03:58,125 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:03:58,125 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:03:58,478 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:03:58,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:03:58 BoogieIcfgContainer [2018-01-31 09:03:58,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:03:58,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:03:58,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:03:58,483 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:03:58,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:03:57" (1/3) ... [2018-01-31 09:03:58,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106c06fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:03:58, skipping insertion in model container [2018-01-31 09:03:58,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:03:57" (2/3) ... [2018-01-31 09:03:58,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106c06fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:03:58, skipping insertion in model container [2018-01-31 09:03:58,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:03:58" (3/3) ... [2018-01-31 09:03:58,487 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-01-31 09:03:58,496 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:03:58,505 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-31 09:03:58,554 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:03:58,554 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:03:58,554 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:03:58,554 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:03:58,554 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:03:58,554 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:03:58,555 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:03:58,555 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:03:58,555 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:03:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-31 09:03:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-31 09:03:58,580 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:58,582 INFO L351 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] [2018-01-31 09:03:58,582 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:03:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1520633124, now seen corresponding path program 1 times [2018-01-31 09:03:58,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:58,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:58,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:58,650 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:58,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:03:58,706 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:03:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:03:58,881 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:03:58,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:03:58,883 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:03:58,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:03:58,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:03:58,895 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2018-01-31 09:03:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:59,121 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-01-31 09:03:59,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:03:59,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-31 09:03:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:59,136 INFO L225 Difference]: With dead ends: 51 [2018-01-31 09:03:59,136 INFO L226 Difference]: Without dead ends: 47 [2018-01-31 09:03:59,139 INFO L554 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 [2018-01-31 09:03:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-01-31 09:03:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-01-31 09:03:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-31 09:03:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-01-31 09:03:59,180 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 24 [2018-01-31 09:03:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:59,180 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-01-31 09:03:59,180 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:03:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-01-31 09:03:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-31 09:03:59,181 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:59,182 INFO L351 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] [2018-01-31 09:03:59,182 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:03:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1520633123, now seen corresponding path program 1 times [2018-01-31 09:03:59,182 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:59,182 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:59,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:59,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:03:59,224 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:03:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:03:59,351 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:03:59,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:03:59,353 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:03:59,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:03:59,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:03:59,355 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2018-01-31 09:03:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:59,666 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-01-31 09:03:59,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:03:59,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-31 09:03:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:59,668 INFO L225 Difference]: With dead ends: 53 [2018-01-31 09:03:59,668 INFO L226 Difference]: Without dead ends: 52 [2018-01-31 09:03:59,669 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:03:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-31 09:03:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-01-31 09:03:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-31 09:03:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2018-01-31 09:03:59,680 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 24 [2018-01-31 09:03:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:59,680 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2018-01-31 09:03:59,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:03:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2018-01-31 09:03:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-31 09:03:59,681 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:59,682 INFO L351 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] [2018-01-31 09:03:59,683 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:03:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1218005098, now seen corresponding path program 1 times [2018-01-31 09:03:59,683 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:59,683 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:59,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:59,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:03:59,705 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:03:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:03:59,813 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:03:59,814 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:03:59,814 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:03:59,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:03:59,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:03:59,815 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 6 states. [2018-01-31 09:03:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:03:59,880 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-01-31 09:03:59,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:03:59,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-31 09:03:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:03:59,882 INFO L225 Difference]: With dead ends: 51 [2018-01-31 09:03:59,882 INFO L226 Difference]: Without dead ends: 50 [2018-01-31 09:03:59,882 INFO L554 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 [2018-01-31 09:03:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-31 09:03:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-01-31 09:03:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-31 09:03:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-01-31 09:03:59,891 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 25 [2018-01-31 09:03:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:03:59,891 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-01-31 09:03:59,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:03:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-01-31 09:03:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-31 09:03:59,893 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:03:59,893 INFO L351 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] [2018-01-31 09:03:59,893 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:03:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1218005099, now seen corresponding path program 1 times [2018-01-31 09:03:59,893 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:03:59,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:03:59,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:03:59,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:03:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:03:59,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:00,077 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:00,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:04:00,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:04:00,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:04:00,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:04:00,079 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 6 states. [2018-01-31 09:04:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:00,234 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-01-31 09:04:00,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:04:00,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-31 09:04:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:00,236 INFO L225 Difference]: With dead ends: 57 [2018-01-31 09:04:00,236 INFO L226 Difference]: Without dead ends: 56 [2018-01-31 09:04:00,236 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:04:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-31 09:04:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-01-31 09:04:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-31 09:04:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2018-01-31 09:04:00,248 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 25 [2018-01-31 09:04:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:00,249 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2018-01-31 09:04:00,252 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:04:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2018-01-31 09:04:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-31 09:04:00,254 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:00,254 INFO L351 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] [2018-01-31 09:04:00,254 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:04:00,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1078472892, now seen corresponding path program 1 times [2018-01-31 09:04:00,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:00,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:00,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:00,256 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:00,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:04:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:04:00,325 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-01-31 09:04:00,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:04:00 BoogieIcfgContainer [2018-01-31 09:04:00,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:04:00,367 INFO L168 Benchmark]: Toolchain (without parser) took 2700.14 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 264.2 MB in the beginning and 370.2 MB in the end (delta: -106.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:00,368 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 305.1 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:04:00,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.71 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 251.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:00,369 INFO L168 Benchmark]: Boogie Preprocessor took 48.79 ms. Allocated memory is still 305.1 MB. Free memory was 251.2 MB in the beginning and 250.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-31 09:04:00,370 INFO L168 Benchmark]: RCFGBuilder took 429.25 ms. Allocated memory is still 305.1 MB. Free memory was 250.2 MB in the beginning and 235.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:00,371 INFO L168 Benchmark]: TraceAbstraction took 1885.78 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 235.6 MB in the beginning and 370.2 MB in the end (delta: -134.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:00,372 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 305.1 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 323.71 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 251.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 48.79 ms. Allocated memory is still 305.1 MB. Free memory was 251.2 MB in the beginning and 250.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 429.25 ms. Allocated memory is still 305.1 MB. Free memory was 250.2 MB in the beginning and 235.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1885.78 ms. Allocated memory was 305.1 MB in the beginning and 464.5 MB in the end (delta: 159.4 MB). Free memory was 235.6 MB in the beginning and 370.2 MB in the end (delta: -134.6 MB). Peak memory consumption was 24.8 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, 1.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 97 SDslu, 396 SDs, 0 SdLazy, 120 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s 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, 0.1s SatisfiabilityAnalysisTime, 0.5s 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-0-2018-01-31_09-04-00-385.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-0-2018-01-31_09-04-00-385.csv Received shutdown request...