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_array_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-18 15:07:29,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 15:07:29,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 15:07:29,369 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-18 15:07:29,369 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-18 15:07:29,370 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-18 15:07:29,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-18 15:07:29,374 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-18 15:07:29,376 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-18 15:07:29,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-18 15:07:29,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-18 15:07:29,407 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2019-01-18 15:07:29,434 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 15:07:29,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 15:07:29,436 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 15:07:29,440 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 15:07:29,440 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 15:07:29,440 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 15:07:29,440 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 15:07:29,441 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 15:07:29,441 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-18 15:07:29,441 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 15:07:29,441 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-18 15:07:29,441 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-18 15:07:29,441 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 15:07:29,442 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 15:07:29,442 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 15:07:29,443 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 15:07:29,443 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 15:07:29,443 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 15:07:29,443 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 15:07:29,443 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 15:07:29,445 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 15:07:29,445 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 15:07:29,445 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 15:07:29,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 15:07:29,445 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 15:07:29,446 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 15:07:29,446 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 15:07:29,446 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 15:07:29,446 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 15:07:29,446 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 15:07:29,447 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 15:07:29,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 15:07:29,447 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 15:07:29,447 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 15:07:29,448 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 15:07:29,448 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 15:07:29,448 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 15:07:29,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 15:07:29,448 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 15:07:29,449 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 15:07:29,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 15:07:29,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 15:07:29,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 15:07:29,500 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 15:07:29,500 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 15:07:29,501 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl [2019-01-18 15:07:29,501 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-4-limited.bpl' [2019-01-18 15:07:29,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 15:07:29,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 15:07:29,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 15:07:29,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 15:07:29,547 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 15:07:29,565 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,579 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 15:07:29,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 15:07:29,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 15:07:29,616 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 15:07:29,628 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,628 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,630 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,630 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,635 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,643 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,646 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 18.01 03:07:29" (1/1) ... [2019-01-18 15:07:29,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 15:07:29,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 15:07:29,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 15:07:29,657 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 15:07:29,658 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 18.01 03:07:29" (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 [2019-01-18 15:07:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-18 15:07:29,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-18 15:07:30,202 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-18 15:07:30,202 INFO L286 CfgBuilder]: Removed 11 assue(true) statements. [2019-01-18 15:07:30,204 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-4-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:07:30 BoogieIcfgContainer [2019-01-18 15:07:30,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 15:07:30,205 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-01-18 15:07:30,206 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-01-18 15:07:30,206 INFO L276 PluginConnector]: Abstract Interpretation initialized [2019-01-18 15:07:30,207 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 18.01 03:07:30" (1/1) ... [2019-01-18 15:07:30,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 15:07:33,910 WARN L212 ngHoareTripleChecker]: Soundness check inconclusive for the following hoare triple [2019-01-18 15:07:33,911 WARN L217 ngHoareTripleChecker]: Expected: VALID Actual: UNKNOWN [2019-01-18 15:07:33,912 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2019-01-18 15:07:33,913 WARN L223 ngHoareTripleChecker]: -- [2019-01-18 15:07:33,913 WARN L224 ngHoareTripleChecker]: Pre: {2147483635#(forall ((v_idx_102 Int) (v_idx_103 Int) (v_idx_98 Int) (v_idx_99 Int) (v_idx_96 Int) (v_idx_97 Int) (v_idx_95 Int) (v_idx_100 Int) (v_idx_101 Int)) (exists ((v_b_23_1 Int) (v_v_36_1 Int) (v_b_31_1 Int) (v_b_22_1 Int) (v_v_56_1 Int) (v_v_44_1 Int) (v_b_30_1 Int) (v_v_42_1 Int) (v_v_54_1 Int) (v_v_2_1 Int) (v_v_4_1 Int)) (and (or (< v_idx_99 v_b_23_1) (= (select |c_#valid| v_idx_99) v_v_44_1)) (= v_v_4_1 (select |c_old(#memory_int)| v_idx_100)) (or (< v_idx_98 v_b_22_1) (<= v_b_23_1 v_idx_98) (= (select |c_#valid| v_idx_98) 1)) (= v_v_2_1 (select |c_old(#valid)| v_idx_96)) (= v_v_36_1 (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_95)) (or (<= v_b_22_1 v_idx_97) (= (select |c_#valid| v_idx_97) v_v_42_1)) (or (= (select |c_#memory_int| v_idx_102) 0) (<= v_b_31_1 v_idx_102) (< v_idx_102 v_b_30_1)) (or (<= v_b_30_1 v_idx_101) (= (select |c_#memory_int| v_idx_101) v_v_54_1)) (or (= (select |c_#memory_int| v_idx_103) v_v_56_1) (< v_idx_103 v_b_31_1)))))} [2019-01-18 15:07:33,917 WARN L228 ngHoareTripleChecker]: Action: #memory_int := #memory_int[main_p3 := #memory_int[main_p3] + 1]; [2019-01-18 15:07:33,918 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (= |c_#memory_int_primed| (store |c_#memory_int| c_ULTIMATE.start_main_p3 (+ (select |c_#memory_int| c_ULTIMATE.start_main_p3) 1))) [2019-01-18 15:07:33,918 WARN L230 ngHoareTripleChecker]: Post: {2147483634#(forall ((v_idx_104 Int) (v_idx_105 Int) (v_idx_108 Int) (v_idx_109 Int) (v_idx_106 Int) (v_idx_107 Int) (v_idx_110 Int)) (exists ((v_b_23_1 Int) (v_v_36_1 Int) (v_b_22_1 Int) (v_v_44_1 Int) (v_v_42_1 Int) (v_v_2_1 Int) (v_v_4_1 Int) (v_v_113_1 Int)) (and (or (= v_v_42_1 (select |c_#valid| v_idx_106)) (<= v_b_22_1 v_idx_106)) (or (< v_idx_107 v_b_22_1) (= 1 (select |c_#valid| v_idx_107)) (<= v_b_23_1 v_idx_107)) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_104) v_v_36_1) (= (select |c_#memory_int| v_idx_110) v_v_113_1) (= (select |c_old(#valid)| v_idx_105) v_v_2_1) (= v_v_4_1 (select |c_old(#memory_int)| v_idx_109)) (or (< v_idx_108 v_b_23_1) (= v_v_44_1 (select |c_#valid| v_idx_108))))))} [2019-01-18 15:07:33,918 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2019-01-18 15:07:34,329 WARN L268 ngHoareTripleChecker]: -- [2019-01-18 15:07:34,329 WARN L269 ngHoareTripleChecker]: Simplified triple [2019-01-18 15:07:34,560 WARN L270 ngHoareTripleChecker]: Pre: {2147483635#true} [2019-01-18 15:07:34,560 WARN L274 ngHoareTripleChecker]: Action: #memory_int := #memory_int[main_p3 := #memory_int[main_p3] + 1]; [2019-01-18 15:07:34,561 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (= |c_#memory_int_primed| (store |c_#memory_int| c_ULTIMATE.start_main_p3 (+ (select |c_#memory_int| c_ULTIMATE.start_main_p3) 1))) [2019-01-18 15:07:34,694 WARN L276 ngHoareTripleChecker]: Post: {2147483634#true} [2019-01-18 15:07:37,015 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 15:07:37,034 INFO L272 AbstractInterpreter]: Visited 14 different actions 20 times. Merged at 1 different actions 1 times. Never widened. Found 9 fixpoints after 6 different actions. Largest state had 0 variables. [2019-01-18 15:07:37,036 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-01-18 15:07:37,038 INFO L168 Benchmark]: Toolchain (without parser) took 7493.13 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 104.9 MB in the beginning and 158.2 MB in the end (delta: -53.3 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2019-01-18 15:07:37,040 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory is still 106.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 15:07:37,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.86 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 102.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-01-18 15:07:37,043 INFO L168 Benchmark]: Boogie Preprocessor took 33.10 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 101.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-01-18 15:07:37,044 INFO L168 Benchmark]: RCFGBuilder took 548.35 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 86.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-01-18 15:07:37,045 INFO L168 Benchmark]: Abstract Interpretation took 6830.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 86.1 MB in the beginning and 158.2 MB in the end (delta: -72.1 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2019-01-18 15:07:37,051 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 0.17 ms. Allocated memory is still 140.0 MB. Free memory is still 106.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.86 ms. Allocated memory is still 140.0 MB. Free memory was 104.9 MB in the beginning and 102.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.10 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 101.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 548.35 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 86.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 6830.67 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 86.1 MB in the beginning and 158.2 MB in the end (delta: -72.1 MB). Peak memory consumption was 69.0 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...