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-poc03-06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 12:13:48,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 12:13:48,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 12:13:48,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-08-05 12:13:48,593 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 12:13:48,606 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-05 12:13:48,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-05 12:13:48,607 INFO L136 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-08-05 12:13:48,607 INFO L138 SettingsManager]: * Show backtranslation warnings=false [2019-08-05 12:13:48,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-08-05 12:13:48,608 INFO L138 SettingsManager]: * User list type=DISABLED [2019-08-05 12:13:48,608 INFO L138 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-08-05 12:13:48,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-08-05 12:13:48,608 INFO L138 SettingsManager]: * Explicit value domain=true [2019-08-05 12:13:48,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-08-05 12:13:48,609 INFO L138 SettingsManager]: * Octagon Domain=false [2019-08-05 12:13:48,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-08-05 12:13:48,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-08-05 12:13:48,609 INFO L138 SettingsManager]: * Interval Domain=false [2019-08-05 12:13:48,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-05 12:13:48,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-05 12:13:48,610 INFO L138 SettingsManager]: * Use SBE=true [2019-08-05 12:13:48,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-05 12:13:48,611 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-05 12:13:48,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-05 12:13:48,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-05 12:13:48,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-05 12:13:48,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-05 12:13:48,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-05 12:13:48,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-05 12:13:48,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-05 12:13:48,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-05 12:13:48,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-05 12:13:48,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-05 12:13:48,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-05 12:13:48,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-05 12:13:48,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-05 12:13:48,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-05 12:13:48,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-05 12:13:48,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-05 12:13:48,614 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-08-05 12:13:48,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-05 12:13:48,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-05 12:13:48,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-05 12:13:48,615 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-08-05 12:13:48,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 12:13:48,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 12:13:48,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 12:13:48,690 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 12:13:48,691 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 12:13:48,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-06.bpl [2019-08-05 12:13:48,692 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc03-06.bpl' [2019-08-05 12:13:48,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 12:13:48,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 12:13:48,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 12:13:48,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 12:13:48,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 12:13:48,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 12:13:48,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 12:13:48,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 12:13:48,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 12:13:48,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (1/1) ... [2019-08-05 12:13:48,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 12:13:48,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 12:13:48,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 12:13:48,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 12:13:48,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 12:13:48" (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 12:13:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 12:13:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 12:13:49,254 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 12:13:49,254 INFO L283 CfgBuilder]: Removed 15 assume(true) statements. [2019-08-05 12:13:49,256 INFO L202 PluginConnector]: Adding new model speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 12:13:49 BoogieIcfgContainer [2019-08-05 12:13:49,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 12:13:49,257 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-08-05 12:13:49,257 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-08-05 12:13:49,257 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-08-05 12:13:49,265 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "speedup-poc03-06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 12:13:49" (1/1) ... [2019-08-05 12:13:49,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-08-05 12:13:49,388 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-08-05 12:13:49,420 INFO L272 AbstractInterpreter]: Visited 20 different actions 20 times. Never merged. Never widened. Performed 96 root evaluator evaluations with a maximum evaluation depth of 2. Performed 96 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 6 fixpoints after 6 different actions. Largest state had 0 variables. [2019-08-05 12:13:49,420 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-08-05 12:13:49,423 INFO L168 Benchmark]: Toolchain (without parser) took 682.81 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 84.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,425 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.83 ms. Allocated memory is still 140.5 MB. Free memory was 106.2 MB in the beginning and 103.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,428 INFO L168 Benchmark]: Boogie Preprocessor took 40.09 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 102.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,429 INFO L168 Benchmark]: RCFGBuilder took 407.50 ms. Allocated memory is still 140.5 MB. Free memory was 102.5 MB in the beginning and 90.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,430 INFO L168 Benchmark]: Abstract Interpretation took 163.32 ms. Allocated memory is still 140.5 MB. Free memory was 90.8 MB in the beginning and 84.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2019-08-05 12:13:49,440 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 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 107.6 MB in the beginning and 107.4 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 67.83 ms. Allocated memory is still 140.5 MB. Free memory was 106.2 MB in the beginning and 103.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.09 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 102.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.50 ms. Allocated memory is still 140.5 MB. Free memory was 102.5 MB in the beginning and 90.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 163.32 ms. Allocated memory is still 140.5 MB. Free memory was 90.8 MB in the beginning and 84.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 48]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; - UnprovableResult [Line: 49]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; [L49] assert #memory_int[p2] <= 0; - UnprovableResult [Line: 50]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; [L49] assert #memory_int[p2] <= 0; [L50] assert #memory_int[p3] >= 0; - UnprovableResult [Line: 51]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; [L49] assert #memory_int[p2] <= 0; [L50] assert #memory_int[p3] >= 0; [L51] assert #memory_int[p4] <= 0; - UnprovableResult [Line: 52]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; [L49] assert #memory_int[p2] <= 0; [L50] assert #memory_int[p3] >= 0; [L51] assert #memory_int[p4] <= 0; [L52] assert #memory_int[p5] >= 0; - UnprovableResult [Line: 53]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L56-L57] modifies #valid; [L56-L58] ensures old(#valid)[ptr] == 0; [L56-L59] ensures #valid == old(#valid)[ptr := 1]; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L30] #memory_int[p5] := 0; [L31] #memory_int[p6] := 0; [L48] assert #memory_int[p1] >= 0; [L49] assert #memory_int[p2] <= 0; [L50] assert #memory_int[p3] >= 0; [L51] assert #memory_int[p4] <= 0; [L52] assert #memory_int[p5] >= 0; [L53] assert #memory_int[p6] <= 0; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...