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/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:21:04,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:21:04,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:21:04,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:21:04,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:21:04,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:21:04,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:21:04,963 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:21:04,965 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:21:04,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:21:04,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:21:04,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:21:04,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:21:04,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:21:04,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:21:04,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:21:04,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:21:04,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:21:04,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:21:04,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:21:04,982 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:21:04,988 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:21:04,989 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:21:04,989 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf [2018-01-24 16:21:04,997 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:21:04,997 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:21:04,998 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:21:04,998 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:21:04,998 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:21:04,999 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:21:04,999 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:21:04,999 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:21:04,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:21:04,999 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:21:05,000 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:21:05,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:21:05,001 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:21:05,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:21:05,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:21:05,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:21:05,001 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:21:05,002 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:21:05,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:21:05,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:21:05,002 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:21:05,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:21:05,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:21:05,003 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:21:05,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:21:05,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:21:05,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:21:05,004 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:21:05,004 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:21:05,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:21:05,049 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:21:05,053 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:21:05,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:21:05,055 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:21:05,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-24 16:21:05,218 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:21:05,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:21:05,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:05,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:21:05,229 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:21:05,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d63a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05, skipping insertion in model container [2018-01-24 16:21:05,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,246 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:05,285 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:05,408 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:05,425 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05 WrapperNode [2018-01-24 16:21:05,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:05,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:21:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:21:05,435 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:21:05,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:21:05,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:21:05,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:21:05,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:21:05,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:05" (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 16:21:05,521 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:21:05,522 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:21:05,522 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:21:05,522 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:21:05,523 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:21:05,523 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:21:05,771 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:21:05,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:05 BoogieIcfgContainer [2018-01-24 16:21:05,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:21:05,772 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:21:05,772 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:21:05,773 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:21:05,773 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:05" (1/1) ... [2018-01-24 16:21:05,820 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:21:06,984 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:21:07,002 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:21:07,009 INFO L268 AbstractInterpreter]: Visited 70 different actions 349 times. Merged at 48 different actions 193 times. Widened at 1 different actions 1 times. Found 33 fixpoints after 17 different actions. Largest state had 38 variables. [2018-01-24 16:21:07,011 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:21:07,012 INFO L168 Benchmark]: Toolchain (without parser) took 1793.38 ms. Allocated memory was 299.9 MB in the beginning and 388.5 MB in the end (delta: 88.6 MB). Free memory was 259.9 MB in the beginning and 278.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 69.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:07,013 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 299.9 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:21:07,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.61 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 248.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:07,014 INFO L168 Benchmark]: Boogie Preprocessor took 37.24 ms. Allocated memory is still 299.9 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:07,014 INFO L168 Benchmark]: RCFGBuilder took 300.26 ms. Allocated memory is still 299.9 MB. Free memory was 246.7 MB in the beginning and 227.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:07,014 INFO L168 Benchmark]: Abstract Interpretation took 1239.05 ms. Allocated memory was 299.9 MB in the beginning and 388.5 MB in the end (delta: 88.6 MB). Free memory was 227.1 MB in the beginning and 278.9 MB in the end (delta: -51.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:07,016 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 299.9 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 209.61 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 248.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.24 ms. Allocated memory is still 299.9 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 300.26 ms. Allocated memory is still 299.9 MB. Free memory was 246.7 MB in the beginning and 227.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1239.05 ms. Allocated memory was 299.9 MB in the beginning and 388.5 MB in the end (delta: 88.6 MB). Free memory was 227.1 MB in the beginning and 278.9 MB in the end (delta: -51.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 52 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 633 LocStat_NO_SUPPORTING_DISEQUALITIES : 81 LocStat_NO_DISJUNCTIONS : -104 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 74 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 94 TransStat_NO_SUPPORTING_DISEQUALITIES : 17 TransStat_NO_DISJUNCTIONS : 84 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.334919 RENAME_VARIABLES(MILLISECONDS) : 0.243056 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.310209 PROJECTAWAY(MILLISECONDS) : 0.444423 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.000932 DISJOIN(MILLISECONDS) : 0.289254 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.266878 ADD_EQUALITY(MILLISECONDS) : 0.018662 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.025291 #CONJOIN_DISJUNCTIVE : 475 #RENAME_VARIABLES : 992 #UNFREEZE : 0 #CONJOIN : 615 #PROJECTAWAY : 548 #ADD_WEAK_EQUALITY : 12 #DISJOIN : 57 #RENAME_VARIABLES_DISJUNCTIVE : 926 #ADD_EQUALITY : 98 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 16 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] COND FALSE !(length % 2 == 0) [L545] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 [L546] COND FALSE !(i