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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:27:38,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:27:38,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:27:38,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:27:38,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:27:38,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:27:38,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:27:38,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:27:38,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:27:38,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:27:38,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:27:38,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:27:38,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:27:38,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:27:38,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:27:38,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:27:38,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:27:38,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:27:38,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:27:38,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:27:38,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:27:38,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:27:38,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:27:38,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:27:38,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:27:38,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:27:38,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:27:38,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:27:38,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:27:38,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:27:38,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:27:38,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:27:38,457 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:27:38,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:27:38,458 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:27:38,458 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:27:38,460 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:27:38,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:27:38,460 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:27:38,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:27:38,464 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:27:38,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:27:38,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:27:38,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:27:38,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:27:38,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:27:38,465 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:27:38,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:27:38,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:27:38,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:27:38,466 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:27:38,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:27:38,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:27:38,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:27:38,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:27:38,467 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:27:38,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:27:38,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:27:38,468 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:27:38,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:27:38,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:27:38,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:27:38,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:27:38,532 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:27:38,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-09-16 17:27:38,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea2d0954/a147680ada1549f090baffdcf3f61a4a/FLAG0cad97b34 [2019-09-16 17:27:39,051 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:27:39,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-09-16 17:27:39,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea2d0954/a147680ada1549f090baffdcf3f61a4a/FLAG0cad97b34 [2019-09-16 17:27:39,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cea2d0954/a147680ada1549f090baffdcf3f61a4a [2019-09-16 17:27:39,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:27:39,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:27:39,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:27:39,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:27:39,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:27:39,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c75ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39, skipping insertion in model container [2019-09-16 17:27:39,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,481 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:27:39,502 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:27:39,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:27:39,698 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:27:39,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:27:39,723 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:27:39,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39 WrapperNode [2019-09-16 17:27:39,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:27:39,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:27:39,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:27:39,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:27:39,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (1/1) ... [2019-09-16 17:27:39,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:27:39,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:27:39,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:27:39,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:27:39,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:27:39" (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 [2019-09-16 17:27:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:27:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:27:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:27:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:27:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:27:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:27:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:27:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:27:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:27:40,065 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:27:40,066 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:27:40,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:27:40 BoogieIcfgContainer [2019-09-16 17:27:40,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:27:40,068 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-16 17:27:40,068 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-16 17:27:40,068 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-16 17:27:40,069 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:27:40" (1/1) ... [2019-09-16 17:27:40,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:27:40,154 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-16 17:27:40,264 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-16 17:27:40,282 INFO L272 AbstractInterpreter]: Visited 19 different actions 72 times. Merged at 4 different actions 14 times. Widened at 1 different actions 3 times. Performed 92 root evaluator evaluations with a maximum evaluation depth of 7. Performed 92 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 3 fixpoints after 2 different actions. Largest state had 4 variables. [2019-09-16 17:27:40,283 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-16 17:27:40,286 INFO L168 Benchmark]: Toolchain (without parser) took 827.58 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 85.2 MB in the beginning and 155.2 MB in the end (delta: -70.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:27:40,287 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-16 17:27:40,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.34 ms. Allocated memory is still 137.4 MB. Free memory was 84.7 MB in the beginning and 75.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:27:40,290 INFO L168 Benchmark]: Boogie Preprocessor took 119.83 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 75.7 MB in the beginning and 176.0 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:27:40,294 INFO L168 Benchmark]: RCFGBuilder took 222.52 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 165.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:27:40,296 INFO L168 Benchmark]: Abstract Interpretation took 214.99 ms. Allocated memory is still 198.2 MB. Free memory was 165.0 MB in the beginning and 155.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:27:40,303 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.34 ms. Allocated memory is still 137.4 MB. Free memory was 84.7 MB in the beginning and 75.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.83 ms. Allocated memory was 137.4 MB in the beginning and 198.2 MB in the end (delta: 60.8 MB). Free memory was 75.7 MB in the beginning and 176.0 MB in the end (delta: -100.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 222.52 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 165.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 214.99 ms. Allocated memory is still 198.2 MB. Free memory was 165.0 MB in the beginning and 155.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 5]: 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: [L11] unsigned int x = 0; [L12] unsigned int y = 1; [L14] COND FALSE !(x < 6) [L19] CALL __VERIFIER_assert(x == 6) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...