/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 06:57:38,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 06:57:38,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 06:57:38,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 06:57:38,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 06:57:38,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 06:57:38,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 06:57:38,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 06:57:38,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 06:57:38,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 06:57:38,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 06:57:38,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 06:57:38,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 06:57:38,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 06:57:38,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 06:57:38,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 06:57:38,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 06:57:38,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 06:57:38,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 06:57:38,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 06:57:38,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 06:57:38,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 06:57:38,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 06:57:38,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 06:57:39,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 06:57:39,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 06:57:39,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 06:57:39,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 06:57:39,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 06:57:39,042 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 06:57:39,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 06:57:39,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 06:57:39,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 06:57:39,044 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 06:57:39,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 06:57:39,045 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 06:57:39,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 06:57:39,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 06:57:39,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 06:57:39,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 06:57:39,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 06:57:39,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 06:57:39,046 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 06:57:39,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 06:57:39,047 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 06:57:39,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 06:57:39,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 06:57:39,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 06:57:39,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 06:57:39,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 06:57:39,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 06:57:39,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 06:57:39,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 06:57:39,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 06:57:39,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 06:57:39,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 06:57:39,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 06:57:39,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain [2019-11-07 06:57:39,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 06:57:39,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 06:57:39,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 06:57:39,364 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 06:57:39,364 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 06:57:39,365 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-11-07 06:57:39,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde810bc8/67aad2fc6e0b4d2a96cbfca0bb23fc79/FLAGb3db15e74 [2019-11-07 06:57:39,896 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 06:57:39,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-11-07 06:57:39,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde810bc8/67aad2fc6e0b4d2a96cbfca0bb23fc79/FLAGb3db15e74 [2019-11-07 06:57:40,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde810bc8/67aad2fc6e0b4d2a96cbfca0bb23fc79 [2019-11-07 06:57:40,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 06:57:40,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 06:57:40,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 06:57:40,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 06:57:40,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 06:57:40,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fac3e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40, skipping insertion in model container [2019-11-07 06:57:40,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,302 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 06:57:40,322 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 06:57:40,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 06:57:40,474 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 06:57:40,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 06:57:40,505 INFO L192 MainTranslator]: Completed translation [2019-11-07 06:57:40,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40 WrapperNode [2019-11-07 06:57:40,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 06:57:40,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 06:57:40,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 06:57:40,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 06:57:40,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 06:57:40,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 06:57:40,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 06:57:40,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 06:57:40,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:57:40" (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 [2019-11-07 06:57:40,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 06:57:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 06:57:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 06:57:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 06:57:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 06:57:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 06:57:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 06:57:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 06:57:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 06:57:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 06:57:40,882 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 06:57:40,882 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 06:57:40,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:57:40 BoogieIcfgContainer [2019-11-07 06:57:40,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 06:57:40,885 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-11-07 06:57:40,885 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-11-07 06:57:40,885 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-11-07 06:57:40,886 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:57:40" (1/1) ... [2019-11-07 06:57:40,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 06:57:41,209 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 06:57:41,239 INFO L272 AbstractInterpreter]: Visited 30 different actions 112 times. Merged at 12 different actions 60 times. Widened at 3 different actions 5 times. Performed 219 root evaluator evaluations with a maximum evaluation depth of 5. Performed 219 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 7 fixpoints after 4 different actions. Largest state had 17 variables. [2019-11-07 06:57:41,239 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-11-07 06:57:41,242 INFO L168 Benchmark]: Toolchain (without parser) took 956.33 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 102.7 MB in the beginning and 154.1 MB in the end (delta: -51.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,243 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.25 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,246 INFO L168 Benchmark]: Boogie Preprocessor took 114.70 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 180.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,247 INFO L168 Benchmark]: RCFGBuilder took 262.68 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 167.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,248 INFO L168 Benchmark]: Abstract Interpretation took 354.48 ms. Allocated memory is still 202.4 MB. Free memory was 167.5 MB in the beginning and 154.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-11-07 06:57:41,252 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 220.25 ms. Allocated memory is still 144.7 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.70 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 180.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.68 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 167.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 354.48 ms. Allocated memory is still 202.4 MB. Free memory was 167.5 MB in the beginning and 154.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 30]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L1] int __return_main; [L7] int __return_100; [L10] int main__offset; [L11] int main__length; [L12] int main__nlen; [L13] main__nlen = __VERIFIER_nondet_int() [L14] int main__i; [L15] int main__j; [L16] main__i = 0 [L18] COND TRUE main__i < main__nlen [L20] main__j = 0 [L21] COND TRUE main__j < 8 [L24] int __tmp_1; [L25] __tmp_1 = 0 <= ((main__nlen - 1) - main__i) [L26] int __VERIFIER_assert__cond; [L27] __VERIFIER_assert__cond = __tmp_1 [L28] COND TRUE __VERIFIER_assert__cond == 0 [L30] __VERIFIER_error() - UnprovableResult [Line: 43]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L1] int __return_main; [L7] int __return_100; [L10] int main__offset; [L11] int main__length; [L12] int main__nlen; [L13] main__nlen = __VERIFIER_nondet_int() [L14] int main__i; [L15] int main__j; [L16] main__i = 0 [L18] COND TRUE main__i < main__nlen [L20] main__j = 0 [L21] COND TRUE main__j < 8 [L24] int __tmp_1; [L25] __tmp_1 = 0 <= ((main__nlen - 1) - main__i) [L26] int __VERIFIER_assert__cond; [L27] __VERIFIER_assert__cond = __tmp_1 [L28] COND FALSE !(__VERIFIER_assert__cond == 0) [L37] int __tmp_2; [L38] __tmp_2 = ((main__nlen - 1) - main__i) < main__nlen [L39] int __VERIFIER_assert__cond; [L40] __VERIFIER_assert__cond = __tmp_2 [L41] COND TRUE __VERIFIER_assert__cond == 0 [L43] __VERIFIER_error() - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L1] int __return_main; [L7] int __return_100; [L10] int main__offset; [L11] int main__length; [L12] int main__nlen; [L13] main__nlen = __VERIFIER_nondet_int() [L14] int main__i; [L15] int main__j; [L16] main__i = 0 [L18] COND TRUE main__i < main__nlen [L20] main__j = 0 [L21] COND TRUE main__j < 8 [L24] int __tmp_1; [L25] __tmp_1 = 0 <= ((main__nlen - 1) - main__i) [L26] int __VERIFIER_assert__cond; [L27] __VERIFIER_assert__cond = __tmp_1 [L28] COND FALSE !(__VERIFIER_assert__cond == 0) [L37] int __tmp_2; [L38] __tmp_2 = ((main__nlen - 1) - main__i) < main__nlen [L39] int __VERIFIER_assert__cond; [L40] __VERIFIER_assert__cond = __tmp_2 [L41] COND FALSE !(__VERIFIER_assert__cond == 0) [L48] main__j = main__j + 1 [L50] COND TRUE main__j < 8 [L53] int __tmp_3; [L54] __tmp_3 = 0 <= ((main__nlen - 1) - main__i) [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_3 [L57] COND TRUE __VERIFIER_assert__cond == 0 [L59] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...