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/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:13:13,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:13:13,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:13:13,580 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:13:13,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:13:13,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:13:13,583 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:13:13,584 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:13:13,586 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:13:13,587 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:13:13,587 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:13:13,588 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:13:13,589 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:13:13,590 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:13:13,591 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:13:13,594 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:13:13,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:13:13,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:13:13,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:13:13,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:13:13,603 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 03:13:13,609 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 03:13:13,619 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:13:13,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:13:13,621 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:13:13,621 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:13:13,621 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:13:13,621 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:13:13,622 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:13:13,622 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:13:13,622 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:13:13,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:13:13,623 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:13:13,623 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:13:13,623 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:13:13,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:13:13,624 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:13:13,624 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:13:13,624 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:13:13,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:13:13,625 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:13:13,625 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:13:13,625 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:13:13,625 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:13:13,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:13:13,626 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:13:13,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:13:13,626 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:13:13,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:13:13,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:13:13,627 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:13:13,627 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:13:13,627 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:13:13,627 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:13:13,627 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:13:13,628 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:13:13,628 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:13:13,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:13:13,628 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:13:13,628 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:13:13,629 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:13:13,630 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:13:13,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:13:13,679 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:13:13,684 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:13:13,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:13:13,686 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:13:13,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0158_1_true-valid-memsafety_true-termination.i [2018-01-21 03:13:13,903 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:13:13,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:13:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:13:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:13:13,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:13:13,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:13:13" (1/1) ... [2018-01-21 03:13:13,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc8da62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:13, skipping insertion in model container [2018-01-21 03:13:13,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:13:13" (1/1) ... [2018-01-21 03:13:13,934 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:13:13,974 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:13:14,092 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:13:14,110 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:13:14,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14 WrapperNode [2018-01-21 03:13:14,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:13:14,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:13:14,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:13:14,122 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:13:14,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (1/1) ... [2018-01-21 03:13:14,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:13:14,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:13:14,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:13:14,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:13:14,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (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 [2018-01-21 03:13:14,204 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:13:14,204 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:13:14,204 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:13:14,204 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:13:14,204 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:13:14,205 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:13:14,206 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:13:14,206 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:13:14,206 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:13:14,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:13:14,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:13:14,362 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:13:14,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:13:14 BoogieIcfgContainer [2018-01-21 03:13:14,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:13:14,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:13:14,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:13:14,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:13:14,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:13:13" (1/3) ... [2018-01-21 03:13:14,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240d6a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:13:14, skipping insertion in model container [2018-01-21 03:13:14,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:13:14" (2/3) ... [2018-01-21 03:13:14,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240d6a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:13:14, skipping insertion in model container [2018-01-21 03:13:14,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:13:14" (3/3) ... [2018-01-21 03:13:14,369 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_1_true-valid-memsafety_true-termination.i [2018-01-21 03:13:14,375 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:13:14,382 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 03:13:14,423 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:14,423 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:14,423 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:14,423 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:14,424 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:14,424 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:14,424 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:14,424 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:13:14,425 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 03:13:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:13:14,451 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:14,452 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:13:14,452 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:13:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash 63331, now seen corresponding path program 1 times [2018-01-21 03:13:14,461 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:14,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:14,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,511 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:14,565 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:13:14,574 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:14,580 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:14,580 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:14,580 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:14,580 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:14,580 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:14,580 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:14,580 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:14,580 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:13:14,580 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 03:13:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 03:13:14,583 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:14,583 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:14,583 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:13:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash -58713941, now seen corresponding path program 1 times [2018-01-21 03:13:14,583 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:14,584 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:14,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,585 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:13:14,661 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:13:14,665 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:14,668 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:14,668 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:13:14,676 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:13:14,677 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:13:14,677 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:13:14,677 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:13:14,677 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:13:14,677 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:13:14,677 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:13:14,677 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:13:14,677 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:13:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-21 03:13:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 03:13:14,681 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:13:14,681 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:13:14,681 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:13:14,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2118372304, now seen corresponding path program 1 times [2018-01-21 03:13:14,682 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:13:14,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:13:14,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:13:14,684 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:13:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:13:14,719 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:13:15,050 WARN L146 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 19 DAG size of output 10 [2018-01-21 03:13:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:13:15,349 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:13:15,350 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 03:13:15,350 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:13:15,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 03:13:15,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 03:13:15,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-21 03:13:15,365 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2018-01-21 03:13:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:13:15,812 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-01-21 03:13:15,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 03:13:15,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-01-21 03:13:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:13:15,822 INFO L225 Difference]: With dead ends: 27 [2018-01-21 03:13:15,822 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 03:13:15,825 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-01-21 03:13:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 03:13:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 03:13:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 03:13:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 03:13:15,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-21 03:13:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:13:15,855 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 03:13:15,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 03:13:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 03:13:15,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:13:15,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 03:13:15 BoogieIcfgContainer [2018-01-21 03:13:15,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 03:13:15,861 INFO L168 Benchmark]: Toolchain (without parser) took 1956.93 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 266.6 MB in the beginning and 391.5 MB in the end (delta: -125.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 5.3 GB. [2018-01-21 03:13:15,863 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 03:13:15,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.69 ms. Allocated memory is still 308.3 MB. Free memory was 266.6 MB in the beginning and 255.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 5.3 GB. [2018-01-21 03:13:15,863 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 308.3 MB. Free memory was 255.4 MB in the beginning and 254.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 03:13:15,864 INFO L168 Benchmark]: RCFGBuilder took 207.67 ms. Allocated memory is still 308.3 MB. Free memory was 254.4 MB in the beginning and 239.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. [2018-01-21 03:13:15,864 INFO L168 Benchmark]: TraceAbstraction took 1497.03 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 239.6 MB in the beginning and 391.5 MB in the end (delta: -152.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 5.3 GB. [2018-01-21 03:13:15,866 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.69 ms. Allocated memory is still 308.3 MB. Free memory was 266.6 MB in the beginning and 255.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 308.3 MB. Free memory was 255.4 MB in the beginning and 254.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 207.67 ms. Allocated memory is still 308.3 MB. Free memory was 254.4 MB in the beginning and 239.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1497.03 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 239.6 MB in the beginning and 391.5 MB in the end (delta: -152.0 MB). Peak memory consumption was 7.4 MB. 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 27 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L622-L629] FCALL union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; VAL [data={40:0}] [L630] EXPR, FCALL malloc(37U) VAL [data={40:0}, malloc(37U)={43:0}] [L630] FCALL data.p0 = malloc(37U) VAL [data={40:0}, malloc(37U)={43:0}] [L631] COND TRUE __VERIFIER_nondet_int() [L632] FCALL data.str.p2 = 20 VAL [data={40:0}, malloc(37U)={43:0}] [L636] EXPR, FCALL data.str.p2 VAL [data={40:0}, data.str.p2=20, malloc(37U)={43:0}] [L636] COND FALSE !(20 > data.str.p2) [L639] EXPR, FCALL data.p0 VAL [data={40:0}, data.p0={43:0}, malloc(37U)={43:0}] [L639] FCALL free(data.p0) VAL [data={40:0}, data.p0={43:0}, malloc(37U)={43:0}] [L640] return 0; VAL [\result=0, data={40:0}, malloc(37U)={43:0}] [L640] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 27 locations, 3 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 620]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 27 locations, 3 error locations. SAFE Result, 1.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 17 SDs, 0 SdLazy, 91 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 4680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_03-13-15-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_03-13-15-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_03-13-15-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_1_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_03-13-15-876.csv Received shutdown request...