java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-5-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 15:26:33,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 15:26:33,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 15:26:34,003 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 15:26:34,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 15:26:34,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 15:26:34,008 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 15:26:34,010 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 15:26:34,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 15:26:34,014 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 15:26:34,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-31 15:26:34,016 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-31 15:26:34,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-31 15:26:34,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-31 15:26:34,030 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-31 15:26:34,031 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-31 15:26:34,032 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-31 15:26:34,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-31 15:26:34,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-31 15:26:34,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-31 15:26:34,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-31 15:26:34,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-31 15:26:34,050 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-31 15:26:34,050 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-31 15:26:34,050 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-31 15:26:34,051 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-31 15:26:34,053 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-31 15:26:34,054 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-31 15:26:34,055 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-31 15:26:34,056 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-31 15:26:34,056 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-31 15:26:34,057 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-31 15:26:34,057 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-31 15:26:34,057 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-31 15:26:34,058 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-31 15:26:34,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-31 15:26:34,060 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-31 15:26:34,084 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 15:26:34,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 15:26:34,085 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 15:26:34,085 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 15:26:34,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 15:26:34,085 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 15:26:34,086 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 15:26:34,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 15:26:34,086 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-31 15:26:34,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 15:26:34,086 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-31 15:26:34,087 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-31 15:26:34,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 15:26:34,087 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 15:26:34,088 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 15:26:34,088 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 15:26:34,088 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 15:26:34,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 15:26:34,089 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 15:26:34,089 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 15:26:34,089 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 15:26:34,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 15:26:34,089 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 15:26:34,090 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 15:26:34,090 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 15:26:34,090 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 15:26:34,090 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 15:26:34,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 15:26:34,091 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 15:26:34,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 15:26:34,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 15:26:34,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:26:34,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 15:26:34,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 15:26:34,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 15:26:34,092 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 15:26:34,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 15:26:34,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 15:26:34,093 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 15:26:34,093 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 15:26:34,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 15:26:34,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 15:26:34,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 15:26:34,138 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 15:26:34,138 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 15:26:34,139 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-5-unlimited.bpl [2019-01-31 15:26:34,139 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-5-unlimited.bpl' [2019-01-31 15:26:34,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 15:26:34,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 15:26:34,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 15:26:34,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 15:26:34,182 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 15:26:34,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 15:26:34,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 15:26:34,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 15:26:34,237 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 15:26:34,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 15:26:34,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 15:26:34,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 15:26:34,260 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 15:26:34,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:26:34,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 15:26:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 15:26:34,998 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 15:26:34,999 INFO L286 CfgBuilder]: Removed 13 assue(true) statements. [2019-01-31 15:26:35,000 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:26:35 BoogieIcfgContainer [2019-01-31 15:26:35,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 15:26:35,001 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-01-31 15:26:35,001 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-01-31 15:26:35,002 INFO L276 PluginConnector]: Abstract Interpretation initialized [2019-01-31 15:26:35,003 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "speedup-poc-dd-5-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:26:35" (1/1) ... [2019-01-31 15:26:35,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 15:26:35,227 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 15:26:35,251 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Performed 80 root evaluator evaluations with a maximum evaluation depth of 2. Performed 80 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 5 fixpoints after 5 different actions. Largest state had 0 variables. [2019-01-31 15:26:35,253 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-01-31 15:26:35,254 INFO L168 Benchmark]: Toolchain (without parser) took 1074.19 ms. Allocated memory is still 133.7 MB. Free memory was 107.5 MB in the beginning and 76.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,256 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.7 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 15:26:35,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 133.7 MB. Free memory was 107.5 MB in the beginning and 105.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,258 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 133.7 MB. Free memory was 105.0 MB in the beginning and 104.1 MB in the end (delta: 855.6 kB). Peak memory consumption was 855.6 kB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,260 INFO L168 Benchmark]: RCFGBuilder took 740.51 ms. Allocated memory is still 133.7 MB. Free memory was 103.7 MB in the beginning and 86.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,261 INFO L168 Benchmark]: Abstract Interpretation took 251.82 ms. Allocated memory is still 133.7 MB. Free memory was 86.4 MB in the beginning and 76.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 133.7 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 133.7 MB. Free memory was 107.5 MB in the beginning and 105.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 133.7 MB. Free memory was 105.0 MB in the beginning and 104.1 MB in the end (delta: 855.6 kB). Peak memory consumption was 855.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 740.51 ms. Allocated memory is still 133.7 MB. Free memory was 103.7 MB in the beginning and 86.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 251.82 ms. Allocated memory is still 133.7 MB. Free memory was 86.4 MB in the beginning and 76.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 43]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L23] #memory_int[p1] := 0; [L24] #memory_int[p2] := 0; [L25] #memory_int[p3] := 0; [L26] #memory_int[p4] := 0; [L27] #memory_int[p5] := 0; [L43] assert #memory_int[p1] >= 0; - UnprovableResult [Line: 44]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L23] #memory_int[p1] := 0; [L24] #memory_int[p2] := 0; [L25] #memory_int[p3] := 0; [L26] #memory_int[p4] := 0; [L27] #memory_int[p5] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; - UnprovableResult [Line: 45]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L23] #memory_int[p1] := 0; [L24] #memory_int[p2] := 0; [L25] #memory_int[p3] := 0; [L26] #memory_int[p4] := 0; [L27] #memory_int[p5] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; [L45] assert #memory_int[p3] >= 0; - UnprovableResult [Line: 46]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L23] #memory_int[p1] := 0; [L24] #memory_int[p2] := 0; [L25] #memory_int[p3] := 0; [L26] #memory_int[p4] := 0; [L27] #memory_int[p5] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; [L45] assert #memory_int[p3] >= 0; [L46] assert #memory_int[p4] <= 0; - UnprovableResult [Line: 47]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L51-L52] modifies #valid; [L51-L53] ensures old(#valid)[ptr] == 0; [L51-L54] ensures #valid == old(#valid)[ptr := 1]; [L23] #memory_int[p1] := 0; [L24] #memory_int[p2] := 0; [L25] #memory_int[p3] := 0; [L26] #memory_int[p4] := 0; [L27] #memory_int[p5] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; [L45] assert #memory_int[p3] >= 0; [L46] assert #memory_int[p4] <= 0; [L47] assert #memory_int[p5] >= 0; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...