java -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-poc03-20.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 12:13:43,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 12:13:43,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 12:13:43,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-08-05 12:13:43,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-08-05 12:13:43,551 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-05 12:13:43,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-05 12:13:43,552 INFO L136 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-08-05 12:13:43,552 INFO L138 SettingsManager]: * Show backtranslation warnings=false [2019-08-05 12:13:43,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-08-05 12:13:43,553 INFO L138 SettingsManager]: * User list type=DISABLED [2019-08-05 12:13:43,553 INFO L138 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-08-05 12:13:43,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-08-05 12:13:43,553 INFO L138 SettingsManager]: * Explicit value domain=true [2019-08-05 12:13:43,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-08-05 12:13:43,554 INFO L138 SettingsManager]: * Octagon Domain=false [2019-08-05 12:13:43,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-08-05 12:13:43,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-08-05 12:13:43,554 INFO L138 SettingsManager]: * Interval Domain=false [2019-08-05 12:13:43,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-05 12:13:43,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-05 12:13:43,556 INFO L138 SettingsManager]: * Use SBE=true [2019-08-05 12:13:43,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-05 12:13:43,556 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-05 12:13:43,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-05 12:13:43,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-05 12:13:43,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-05 12:13:43,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-05 12:13:43,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-05 12:13:43,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-05 12:13:43,558 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-05 12:13:43,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-05 12:13:43,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-05 12:13:43,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-05 12:13:43,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-05 12:13:43,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-05 12:13:43,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-05 12:13:43,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-05 12:13:43,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-05 12:13:43,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-05 12:13:43,560 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-08-05 12:13:43,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-05 12:13:43,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-05 12:13:43,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-05 12:13:43,561 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-08-05 12:13:43,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 12:13:43,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 12:13:43,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 12:13:43,609 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 12:13:43,609 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 12:13:43,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-20.bpl [2019-08-05 12:13:43,611 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-20.bpl' [2019-08-05 12:13:43,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 12:13:43,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 12:13:43,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 12:13:43,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 12:13:43,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 12:13:43,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 12:13:43,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 12:13:43,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 12:13:43,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 12:13:43,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (1/1) ... [2019-08-05 12:13:43,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 12:13:43,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 12:13:43,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 12:13:43,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 12:13:43,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:43" (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: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 [2019-08-05 12:13:43,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 12:13:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 12:13:44,734 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 12:13:44,734 INFO L283 CfgBuilder]: Removed 43 assume(true) statements. [2019-08-05 12:13:44,736 INFO L202 PluginConnector]: Adding new model speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 12:13:44 BoogieIcfgContainer [2019-08-05 12:13:44,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 12:13:44,737 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-08-05 12:13:44,737 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-08-05 12:13:44,738 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-08-05 12:13:44,738 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "speedup-poc03-20.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 12:13:44" (1/1) ... [2019-08-05 12:13:44,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-08-05 12:13:44,894 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-08-05 12:13:44,989 INFO L272 AbstractInterpreter]: Visited 62 different actions 62 times. Never merged. Never widened. Performed 320 root evaluator evaluations with a maximum evaluation depth of 2. Performed 320 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 20 fixpoints after 20 different actions. Largest state had 0 variables. [2019-08-05 12:13:44,990 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-08-05 12:13:44,993 INFO L168 Benchmark]: Toolchain (without parser) took 1323.25 ms. Allocated memory is still 131.6 MB. Free memory was 105.4 MB in the beginning and 66.2 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:44,995 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 131.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 12:13:44,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.95 ms. Allocated memory is still 131.6 MB. Free memory was 105.1 MB in the beginning and 102.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:45,001 INFO L168 Benchmark]: Boogie Preprocessor took 41.66 ms. Allocated memory is still 131.6 MB. Free memory was 102.4 MB in the beginning and 100.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:45,003 INFO L168 Benchmark]: RCFGBuilder took 929.32 ms. Allocated memory is still 131.6 MB. Free memory was 100.8 MB in the beginning and 77.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:45,004 INFO L168 Benchmark]: Abstract Interpretation took 252.73 ms. Allocated memory is still 131.6 MB. Free memory was 77.3 MB in the beginning and 66.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:45,011 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 131.6 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 94.95 ms. Allocated memory is still 131.6 MB. Free memory was 105.1 MB in the beginning and 102.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.66 ms. Allocated memory is still 131.6 MB. Free memory was 102.4 MB in the beginning and 100.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 929.32 ms. Allocated memory is still 131.6 MB. Free memory was 100.8 MB in the beginning and 77.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 252.73 ms. Allocated memory is still 131.6 MB. Free memory was 77.3 MB in the beginning and 66.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 105]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; - UnprovableResult [Line: 106]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; - UnprovableResult [Line: 107]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; - UnprovableResult [Line: 108]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; - UnprovableResult [Line: 109]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; - UnprovableResult [Line: 110]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; - UnprovableResult [Line: 111]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; - UnprovableResult [Line: 112]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; - UnprovableResult [Line: 113]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; - UnprovableResult [Line: 114]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; - UnprovableResult [Line: 115]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; - UnprovableResult [Line: 116]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; - UnprovableResult [Line: 117]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; - UnprovableResult [Line: 118]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; - UnprovableResult [Line: 119]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; - UnprovableResult [Line: 120]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; [L120] assert #memory_int[p16] <= 0; - UnprovableResult [Line: 121]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; [L120] assert #memory_int[p16] <= 0; [L121] assert #memory_int[p17] >= 0; - UnprovableResult [Line: 122]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; [L120] assert #memory_int[p16] <= 0; [L121] assert #memory_int[p17] >= 0; [L122] assert #memory_int[p18] <= 0; - UnprovableResult [Line: 123]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; [L120] assert #memory_int[p16] <= 0; [L121] assert #memory_int[p17] >= 0; [L122] assert #memory_int[p18] <= 0; [L123] assert #memory_int[p19] >= 0; - UnprovableResult [Line: 124]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L127-L128] modifies #valid; [L127-L129] ensures old(#valid)[ptr] == 0; [L127-L130] ensures #valid == old(#valid)[ptr := 1]; [L41] #memory_int[p1] := 0; [L42] #memory_int[p2] := 0; [L43] #memory_int[p3] := 0; [L44] #memory_int[p4] := 0; [L45] #memory_int[p5] := 0; [L46] #memory_int[p6] := 0; [L47] #memory_int[p7] := 0; [L48] #memory_int[p8] := 0; [L49] #memory_int[p9] := 0; [L50] #memory_int[p10] := 0; [L51] #memory_int[p11] := 0; [L52] #memory_int[p12] := 0; [L53] #memory_int[p13] := 0; [L54] #memory_int[p14] := 0; [L55] #memory_int[p15] := 0; [L56] #memory_int[p16] := 0; [L57] #memory_int[p17] := 0; [L58] #memory_int[p18] := 0; [L59] #memory_int[p19] := 0; [L60] #memory_int[p20] := 0; [L105] assert #memory_int[p1] >= 0; [L106] assert #memory_int[p2] <= 0; [L107] assert #memory_int[p3] >= 0; [L108] assert #memory_int[p4] <= 0; [L109] assert #memory_int[p5] >= 0; [L110] assert #memory_int[p6] <= 0; [L111] assert #memory_int[p7] >= 0; [L112] assert #memory_int[p8] <= 0; [L113] assert #memory_int[p9] >= 0; [L114] assert #memory_int[p10] <= 0; [L115] assert #memory_int[p11] >= 0; [L116] assert #memory_int[p12] <= 0; [L117] assert #memory_int[p13] >= 0; [L118] assert #memory_int[p14] <= 0; [L119] assert #memory_int[p15] >= 0; [L120] assert #memory_int[p16] <= 0; [L121] assert #memory_int[p17] >= 0; [L122] assert #memory_int[p18] <= 0; [L123] assert #memory_int[p19] >= 0; [L124] assert #memory_int[p20] <= 0; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...