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_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 19:41:58,803 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 19:41:58,805 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 19:41:58,817 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 19:41:58,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 19:41:58,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 19:41:58,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 19:41:58,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 19:41:58,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 19:41:58,824 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 19:41:58,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 19:41:58,825 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 19:41:58,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 19:41:58,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 19:41:58,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 19:41:58,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 19:41:58,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 19:41:58,835 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 19:41:58,837 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 19:41:58,838 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 19:41:58,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 19:41:58,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 19:41:58,841 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 19:41:58,842 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 19:41:58,843 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 19:41:58,845 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 19:41:58,845 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 19:41:58,846 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 19:41:58,846 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 19:41:58,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 19:41:58,847 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 19:41:58,847 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_mostprecise.epf [2018-01-24 19:41:58,858 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 19:41:58,858 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 19:41:58,859 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 19:41:58,859 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 19:41:58,859 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 19:41:58,860 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 19:41:58,860 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 19:41:58,860 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 19:41:58,860 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 19:41:58,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 19:41:58,861 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 19:41:58,861 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 19:41:58,862 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 19:41:58,862 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 19:41:58,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 19:41:58,862 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 19:41:58,862 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 19:41:58,863 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 19:41:58,863 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 19:41:58,863 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 19:41:58,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 19:41:58,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 19:41:58,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 19:41:58,864 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 19:41:58,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 19:41:58,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 19:41:58,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 19:41:58,865 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 19:41:58,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 19:41:58,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 19:41:58,865 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 19:41:58,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 19:41:58,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 19:41:58,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 19:41:58,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 19:41:58,867 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 19:41:58,867 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 19:41:58,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 19:41:58,919 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 19:41:58,923 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 19:41:58,925 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 19:41:58,925 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 19:41:58,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-01-24 19:41:59,042 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 19:41:59,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 19:41:59,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 19:41:59,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 19:41:59,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 19:41:59,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f6613c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59, skipping insertion in model container [2018-01-24 19:41:59,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,075 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:41:59,096 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:41:59,220 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:41:59,236 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:41:59,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59 WrapperNode [2018-01-24 19:41:59,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 19:41:59,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 19:41:59,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 19:41:59,244 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 19:41:59,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (1/1) ... [2018-01-24 19:41:59,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 19:41:59,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 19:41:59,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 19:41:59,285 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 19:41:59,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (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 19:41:59,338 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 19:41:59,338 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 19:41:59,338 INFO L136 BoogieDeclarations]: Found implementation of procedure diff [2018-01-24 19:41:59,338 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 19:41:59,338 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure diff [2018-01-24 19:41:59,339 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 19:41:59,340 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 19:41:59,340 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 19:41:59,579 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 19:41:59,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:41:59 BoogieIcfgContainer [2018-01-24 19:41:59,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 19:41:59,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 19:41:59,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 19:41:59,583 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 19:41:59,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 07:41:59" (1/3) ... [2018-01-24 19:41:59,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50d071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 07:41:59, skipping insertion in model container [2018-01-24 19:41:59,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:41:59" (2/3) ... [2018-01-24 19:41:59,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b50d071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 07:41:59, skipping insertion in model container [2018-01-24 19:41:59,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:41:59" (3/3) ... [2018-01-24 19:41:59,588 INFO L105 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-01-24 19:41:59,596 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 19:41:59,602 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-24 19:41:59,639 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 19:41:59,640 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 19:41:59,640 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 19:41:59,640 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 19:41:59,640 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 19:41:59,640 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 19:41:59,641 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 19:41:59,641 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 19:41:59,642 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 19:41:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-01-24 19:41:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 19:41:59,671 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:41:59,672 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:41:59,672 INFO L371 AbstractCegarLoop]: === Iteration 1 === [diffErr2RequiresViolation, diffErr4RequiresViolation, diffErr0RequiresViolation, diffErr6RequiresViolation, diffErr5RequiresViolation, diffErr1RequiresViolation, diffErr3RequiresViolation, diffErr7RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 19:41:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1637109738, now seen corresponding path program 1 times [2018-01-24 19:41:59,681 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:41:59,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:41:59,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:41:59,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:41:59,734 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:41:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 19:41:59,783 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 19:41:59,817 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 19:41:59,820 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 19:41:59,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 19:41:59,820 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 19:41:59,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 19:41:59,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 19:41:59,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 19:41:59,837 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-01-24 19:41:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 19:41:59,856 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-01-24 19:41:59,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 19:41:59,858 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-01-24 19:41:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 19:41:59,866 INFO L225 Difference]: With dead ends: 63 [2018-01-24 19:41:59,866 INFO L226 Difference]: Without dead ends: 28 [2018-01-24 19:41:59,869 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 19:41:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-24 19:41:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-24 19:41:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 19:41:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-24 19:41:59,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-01-24 19:41:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 19:41:59,903 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-24 19:41:59,903 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 19:41:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-24 19:41:59,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 19:41:59,903 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 19:41:59,904 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 19:41:59,904 INFO L371 AbstractCegarLoop]: === Iteration 2 === [diffErr2RequiresViolation, diffErr4RequiresViolation, diffErr0RequiresViolation, diffErr6RequiresViolation, diffErr5RequiresViolation, diffErr1RequiresViolation, diffErr3RequiresViolation, diffErr7RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 19:41:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1592374036, now seen corresponding path program 1 times [2018-01-24 19:41:59,904 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 19:41:59,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:41:59,905 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 19:41:59,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 19:41:59,905 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 19:41:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 19:42:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 19:42:00,052 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 19:42:00,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 07:42:00 BoogieIcfgContainer [2018-01-24 19:42:00,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 19:42:00,085 INFO L168 Benchmark]: Toolchain (without parser) took 1042.45 ms. Allocated memory was 301.5 MB in the beginning and 457.7 MB in the end (delta: 156.2 MB). Free memory was 262.4 MB in the beginning and 430.1 MB in the end (delta: -167.7 MB). Peak memory consumption was 65.9 MB. Max. memory is 5.3 GB. [2018-01-24 19:42:00,087 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 301.5 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 19:42:00,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.59 ms. Allocated memory is still 301.5 MB. Free memory was 262.4 MB in the beginning and 253.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-24 19:42:00,088 INFO L168 Benchmark]: Boogie Preprocessor took 40.46 ms. Allocated memory is still 301.5 MB. Free memory was 253.3 MB in the beginning and 252.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 19:42:00,088 INFO L168 Benchmark]: RCFGBuilder took 295.42 ms. Allocated memory is still 301.5 MB. Free memory was 251.3 MB in the beginning and 235.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 5.3 GB. [2018-01-24 19:42:00,089 INFO L168 Benchmark]: TraceAbstraction took 503.65 ms. Allocated memory was 301.5 MB in the beginning and 457.7 MB in the end (delta: 156.2 MB). Free memory was 235.3 MB in the beginning and 430.1 MB in the end (delta: -194.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. [2018-01-24 19:42:00,093 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 301.5 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.59 ms. Allocated memory is still 301.5 MB. Free memory was 262.4 MB in the beginning and 253.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.46 ms. Allocated memory is still 301.5 MB. Free memory was 253.3 MB in the beginning and 252.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 295.42 ms. Allocated memory is still 301.5 MB. Free memory was 251.3 MB in the beginning and 235.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 503.65 ms. Allocated memory was 301.5 MB in the beginning and 457.7 MB in the end (delta: 156.2 MB). Free memory was 235.3 MB in the beginning and 430.1 MB in the end (delta: -194.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] int *A; [L28] int Alen = __VERIFIER_nondet_int(); [L29] int *B; [L30] int Blen = __VERIFIER_nondet_int(); [L31] int *D; VAL [Alen=1, Blen=2] [L32] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=1, \old(Blen)=2, A={10:6}, B={7:9}, D={4:8}] [L4] int k = 0; [L5] int i = 0; [L6] int l1 = Alen; [L7] int l2 = Blen; [L8] int found; VAL [\old(Alen)=1, \old(Blen)=2, A={10:6}, A={10:6}, Alen=1, B={7:9}, B={7:9}, Blen=2, D={4:8}, D={4:8}, i=0, k=0, l1=1, l2=2] [L9] COND TRUE i < l1 [L10] int j = 0; [L11] found = 0 VAL [\old(Alen)=1, \old(Blen)=2, A={10:6}, A={10:6}, Alen=1, B={7:9}, B={7:9}, Blen=2, D={4:8}, D={4:8}, found=0, i=0, j=0, k=0, l1=1, l2=2] [L12] COND TRUE j < l2 && !found VAL [\old(Alen)=1, \old(Blen)=2, A={10:6}, A={10:6}, Alen=1, B={7:9}, B={7:9}, Blen=2, D={4:8}, D={4:8}, found=0, i=0, j=0, k=0, l1=1, l2=2] [L13] FCALL A[i] VAL [\old(Alen)=1, \old(Blen)=2, A={10:6}, A={10:6}, Alen=1, B={7:9}, B={7:9}, Blen=2, D={4:8}, D={4:8}, found=0, i=0, j=0, k=0, l1=1, l2=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 9 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_19-42-00-104.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_19-42-00-104.csv Received shutdown request...