java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 15:26:33,823 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 15:26:33,825 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 15:26:33,837 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 15:26:33,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 15:26:33,839 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 15:26:33,840 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 15:26:33,842 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 15:26:33,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 15:26:33,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 15:26:33,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-31 15:26:33,846 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-31 15:26:33,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-31 15:26:33,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-31 15:26:33,850 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-31 15:26:33,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-31 15:26:33,852 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-31 15:26:33,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-31 15:26:33,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-31 15:26:33,858 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-31 15:26:33,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-31 15:26:33,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-31 15:26:33,866 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-31 15:26:33,867 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-31 15:26:33,867 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-31 15:26:33,868 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-31 15:26:33,869 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-31 15:26:33,870 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-31 15:26:33,876 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-31 15:26:33,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-31 15:26:33,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-31 15:26:33,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-31 15:26:33,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-31 15:26:33,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-31 15:26:33,882 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-31 15:26:33,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-31 15:26:33,884 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-31 15:26:33,911 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 15:26:33,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 15:26:33,912 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 15:26:33,914 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 15:26:33,914 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 15:26:33,914 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 15:26:33,914 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 15:26:33,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 15:26:33,915 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-31 15:26:33,915 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 15:26:33,915 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-31 15:26:33,915 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-31 15:26:33,915 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 15:26:33,916 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 15:26:33,917 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 15:26:33,917 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 15:26:33,917 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 15:26:33,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 15:26:33,920 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 15:26:33,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 15:26:33,920 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 15:26:33,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 15:26:33,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 15:26:33,921 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 15:26:33,921 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 15:26:33,921 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 15:26:33,922 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 15:26:33,922 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 15:26:33,922 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 15:26:33,923 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 15:26:33,923 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 15:26:33,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:26:33,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 15:26:33,924 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 15:26:33,924 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 15:26:33,924 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 15:26:33,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 15:26:33,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 15:26:33,925 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 15:26:33,925 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 15:26:33,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 15:26:33,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 15:26:34,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 15:26:34,004 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 15:26:34,005 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 15:26:34,006 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl [2019-01-31 15:26:34,006 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl' [2019-01-31 15:26:34,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 15:26:34,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 15:26:34,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 15:26:34,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 15:26:34,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 15:26:34,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 15:26:34,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 15:26:34,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 15:26:34,138 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 15:26:34,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 15:26:34,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 15:26:34,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 15:26:34,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 15:26:34,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:26:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:26:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 15:26:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 15:26:34,729 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 15:26:34,729 INFO L286 CfgBuilder]: Removed 11 assue(true) statements. [2019-01-31 15:26:34,731 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:26:34 BoogieIcfgContainer [2019-01-31 15:26:34,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 15:26:34,732 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-01-31 15:26:34,732 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-01-31 15:26:34,732 INFO L276 PluginConnector]: Abstract Interpretation initialized [2019-01-31 15:26:34,733 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:26:34" (1/1) ... [2019-01-31 15:26:34,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 15:26:34,981 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 15:26:35,019 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 70 root evaluator evaluations with a maximum evaluation depth of 3. Performed 70 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 4 fixpoints after 4 different actions. Largest state had 0 variables. [2019-01-31 15:26:35,020 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-01-31 15:26:35,025 INFO L168 Benchmark]: Toolchain (without parser) took 958.50 ms. Allocated memory is still 140.0 MB. Free memory was 108.5 MB in the beginning and 80.5 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,027 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 15:26:35,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.02 ms. Allocated memory is still 140.0 MB. Free memory was 108.5 MB in the beginning and 106.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,030 INFO L168 Benchmark]: Boogie Preprocessor took 37.31 ms. Allocated memory is still 140.0 MB. Free memory was 106.0 MB in the beginning and 105.1 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,032 INFO L168 Benchmark]: RCFGBuilder took 555.60 ms. Allocated memory is still 140.0 MB. Free memory was 104.7 MB in the beginning and 89.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,033 INFO L168 Benchmark]: Abstract Interpretation took 288.87 ms. Allocated memory is still 140.0 MB. Free memory was 89.7 MB in the beginning and 80.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-01-31 15:26:35,043 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory is still 109.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.02 ms. Allocated memory is still 140.0 MB. Free memory was 108.5 MB in the beginning and 106.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.31 ms. Allocated memory is still 140.0 MB. Free memory was 106.0 MB in the beginning and 105.1 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 7.1 GB. * RCFGBuilder took 555.60 ms. Allocated memory is still 140.0 MB. Free memory was 104.7 MB in the beginning and 89.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 288.87 ms. Allocated memory is still 140.0 MB. Free memory was 89.7 MB in the beginning and 80.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 43]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L22] assume p1 < p2; [L23] assume p2 < p3; [L24] assume p3 < p4; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L43] assert #memory_int[p1] >= 0; - UnprovableResult [Line: 44]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L22] assume p1 < p2; [L23] assume p2 < p3; [L24] assume p3 < p4; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; - UnprovableResult [Line: 45]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L22] assume p1 < p2; [L23] assume p2 < p3; [L24] assume p3 < p4; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; [L45] assert #memory_int[p3] >= 0; - UnprovableResult [Line: 46]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L50-L51] modifies #valid; [L50-L52] ensures old(#valid)[ptr] == 0; [L50-L53] ensures #valid == old(#valid)[ptr := 1]; [L22] assume p1 < p2; [L23] assume p2 < p3; [L24] assume p3 < p4; [L26] #memory_int[p1] := 0; [L27] #memory_int[p2] := 0; [L28] #memory_int[p3] := 0; [L29] #memory_int[p4] := 0; [L43] assert #memory_int[p1] >= 0; [L44] assert #memory_int[p2] <= 0; [L45] assert #memory_int[p3] >= 0; [L46] assert #memory_int[p4] <= 0; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...