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.epf -i ../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:30:17,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:30:17,440 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:30:17,456 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:30:17,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:30:17,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:30:17,458 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:30:17,460 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:30:17,462 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:30:17,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:30:17,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:30:17,464 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:30:17,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:30:17,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:30:17,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:30:17,470 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:30:17,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:30:17,474 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:30:17,475 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:30:17,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:30:17,479 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 15:30:17,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:30:17,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:30:17,485 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.epf [2018-01-24 15:30:17,494 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:30:17,495 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:30:17,496 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:30:17,496 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:30:17,496 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:30:17,496 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:30:17,496 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:30:17,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:30:17,497 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:30:17,497 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:30:17,498 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:30:17,499 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:30:17,499 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:30:17,499 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:30:17,499 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:30:17,499 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:30:17,500 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:30:17,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:30:17,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:30:17,500 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:30:17,500 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:30:17,501 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:30:17,502 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:30:17,503 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:30:17,503 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:30:17,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:30:17,550 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:30:17,554 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:30:17,556 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:30:17,556 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:30:17,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-memtrack_true-termination.i [2018-01-24 15:30:17,711 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:30:17,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:30:17,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:30:17,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:30:17,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:30:17,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3be31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17, skipping insertion in model container [2018-01-24 15:30:17,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,741 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:30:17,776 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:30:17,880 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:30:17,893 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:30:17,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17 WrapperNode [2018-01-24 15:30:17,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:30:17,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:30:17,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:30:17,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:30:17,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (1/1) ... [2018-01-24 15:30:17,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:30:17,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:30:17,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:30:17,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:30:17,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (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 15:30:17,987 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:30:17,987 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:30:17,987 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:30:17,987 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 15:30:17,987 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 15:30:17,987 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 15:30:17,987 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:30:17,988 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:30:17,989 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:30:18,134 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:30:18,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:30:18 BoogieIcfgContainer [2018-01-24 15:30:18,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:30:18,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:30:18,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:30:18,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:30:18,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:30:17" (1/3) ... [2018-01-24 15:30:18,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e019f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:30:18, skipping insertion in model container [2018-01-24 15:30:18,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:30:17" (2/3) ... [2018-01-24 15:30:18,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e019f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:30:18, skipping insertion in model container [2018-01-24 15:30:18,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:30:18" (3/3) ... [2018-01-24 15:30:18,140 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-memtrack_true-termination.i [2018-01-24 15:30:18,146 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:30:18,151 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-24 15:30:18,195 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:30:18,195 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:30:18,195 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:30:18,195 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:30:18,195 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:30:18,195 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:30:18,195 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:30:18,196 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:30:18,196 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:30:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-01-24 15:30:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 15:30:18,215 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:30:18,216 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:30:18,216 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-24 15:30:18,219 INFO L82 PathProgramCache]: Analyzing trace with hash 481461009, now seen corresponding path program 1 times [2018-01-24 15:30:18,221 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:30:18,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:30:18,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,263 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:30:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:30:18,315 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:30:18,389 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 15:30:18,390 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:30:18,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 15:30:18,391 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:30:18,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 15:30:18,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 15:30:18,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:30:18,409 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-01-24 15:30:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:30:18,548 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-01-24 15:30:18,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 15:30:18,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-01-24 15:30:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:30:18,557 INFO L225 Difference]: With dead ends: 24 [2018-01-24 15:30:18,557 INFO L226 Difference]: Without dead ends: 18 [2018-01-24 15:30:18,560 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:30:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-01-24 15:30:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-01-24 15:30:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-01-24 15:30:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-01-24 15:30:18,584 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2018-01-24 15:30:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:30:18,584 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-01-24 15:30:18,584 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 15:30:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-01-24 15:30:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 15:30:18,585 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:30:18,585 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:30:18,585 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-24 15:30:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 481461010, now seen corresponding path program 1 times [2018-01-24 15:30:18,585 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:30:18,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:30:18,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,586 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:30:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:30:18,606 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:30:18,661 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 15:30:18,661 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:30:18,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:30:18,661 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:30:18,663 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:30:18,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:30:18,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:30:18,663 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 4 states. [2018-01-24 15:30:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:30:18,745 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-01-24 15:30:18,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 15:30:18,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 15:30:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:30:18,746 INFO L225 Difference]: With dead ends: 18 [2018-01-24 15:30:18,746 INFO L226 Difference]: Without dead ends: 15 [2018-01-24 15:30:18,747 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:30:18,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-01-24 15:30:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-01-24 15:30:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-01-24 15:30:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-01-24 15:30:18,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 8 [2018-01-24 15:30:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:30:18,751 INFO L432 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-01-24 15:30:18,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:30:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-01-24 15:30:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 15:30:18,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:30:18,752 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:30:18,752 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-24 15:30:18,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2142709462, now seen corresponding path program 1 times [2018-01-24 15:30:18,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:30:18,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:30:18,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:30:18,754 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:30:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:30:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:30:18,809 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 15:30:18,818 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 15:30:18,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:30:18 BoogieIcfgContainer [2018-01-24 15:30:18,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:30:18,834 INFO L168 Benchmark]: Toolchain (without parser) took 1121.74 ms. Allocated memory was 303.0 MB in the beginning and 465.0 MB in the end (delta: 162.0 MB). Free memory was 260.9 MB in the beginning and 417.1 MB in the end (delta: -156.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 5.3 GB. [2018-01-24 15:30:18,835 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 303.0 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:30:18,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.04 ms. Allocated memory is still 303.0 MB. Free memory was 260.9 MB in the beginning and 249.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-24 15:30:18,836 INFO L168 Benchmark]: Boogie Preprocessor took 32.72 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 248.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-24 15:30:18,836 INFO L168 Benchmark]: RCFGBuilder took 199.43 ms. Allocated memory is still 303.0 MB. Free memory was 248.9 MB in the beginning and 234.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 5.3 GB. [2018-01-24 15:30:18,837 INFO L168 Benchmark]: TraceAbstraction took 697.37 ms. Allocated memory was 303.0 MB in the beginning and 465.0 MB in the end (delta: 162.0 MB). Free memory was 234.6 MB in the beginning and 417.1 MB in the end (delta: -182.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:30:18,839 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 303.0 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 184.04 ms. Allocated memory is still 303.0 MB. Free memory was 260.9 MB in the beginning and 249.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.72 ms. Allocated memory is still 303.0 MB. Free memory was 249.9 MB in the beginning and 248.9 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 199.43 ms. Allocated memory is still 303.0 MB. Free memory was 248.9 MB in the beginning and 234.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 697.37 ms. Allocated memory was 303.0 MB in the beginning and 465.0 MB in the end (delta: 162.0 MB). Free memory was 234.6 MB in the beginning and 417.1 MB in the end (delta: -182.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 619]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 619. Possible FailurePath: [L621-L628] FCALL union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; VAL [data={42:0}] [L629] EXPR, FCALL malloc(37U) VAL [data={42:0}, malloc(37U)={38:0}] [L629] FCALL data.p0 = malloc(37U) VAL [data={42:0}, malloc(37U)={38:0}] [L630] FCALL data.str.p2 = &data VAL [data={42:0}, malloc(37U)={38:0}] [L631] FCALL data.str.c[1] = sizeof data.str.p1 VAL [data={42:0}, malloc(37U)={38:0}] [L632] return 0; VAL [\result=0, data={42:0}, malloc(37U)={38:0}] [L632] return 0; VAL [\result=0, malloc(37U)={38:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 7 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 11 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-30-18-848.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-30-18-848.csv Received shutdown request...