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_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:47:30,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:47:30,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:47:30,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:47:30,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:47:30,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:47:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:47:30,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:47:30,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:47:30,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:47:30,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:47:30,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:47:30,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:47:30,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:47:30,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:47:30,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:47:30,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:47:30,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:47:30,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:47:30,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:47:30,532 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 [2019-09-20 13:47:30,554 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:47:30,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:47:30,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:47:30,556 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:47:30,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:47:30,557 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:47:30,557 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:47:30,557 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:47:30,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:47:30,557 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:47:30,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:47:30,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:47:30,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:47:30,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:47:30,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:47:30,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:47:30,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:47:30,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:47:30,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:47:30,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:47:30,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:47:30,563 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:47:30,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:47:30,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:47:30,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:47:30,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:47:30,564 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:47:30,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:47:30,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:47:30,565 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:47:30,618 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:47:30,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:47:30,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:47:30,643 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:47:30,643 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:47:30,644 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-09-20 13:47:30,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3da51b60/8776cc40751a406886f0e0b224506168/FLAGf20cb8831 [2019-09-20 13:47:31,203 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:47:31,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-09-20 13:47:31,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3da51b60/8776cc40751a406886f0e0b224506168/FLAGf20cb8831 [2019-09-20 13:47:31,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3da51b60/8776cc40751a406886f0e0b224506168 [2019-09-20 13:47:31,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:47:31,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:47:31,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:31,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:47:31,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:47:31,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:31,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c0d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31, skipping insertion in model container [2019-09-20 13:47:31,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:31,593 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:47:31,610 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:47:31,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:31,876 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:47:31,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:31,916 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:47:31,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31 WrapperNode [2019-09-20 13:47:31,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:31,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:47:31,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:47:31,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:47:32,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:32,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:47:32,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:47:32,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:47:32,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:47:32,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:31" (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 [2019-09-20 13:47:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:47:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:47:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:47:32,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:47:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:47:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:47:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:47:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:47:32,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:47:32,321 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:47:32,322 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:47:32,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:32 BoogieIcfgContainer [2019-09-20 13:47:32,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:47:32,324 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-20 13:47:32,324 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-20 13:47:32,324 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-20 13:47:32,325 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:32" (1/1) ... [2019-09-20 13:47:32,347 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:47:32,417 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-20 13:47:32,621 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:47:32,648 INFO L272 AbstractInterpreter]: Visited 19 different actions 84 times. Merged at 4 different actions 20 times. Widened at 1 different actions 3 times. Performed 97 root evaluator evaluations with a maximum evaluation depth of 8. Performed 97 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 6 fixpoints after 2 different actions. Largest state had 4 variables. [2019-09-20 13:47:32,648 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-20 13:47:32,652 INFO L168 Benchmark]: Toolchain (without parser) took 1072.58 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 85.8 MB in the beginning and 149.5 MB in the end (delta: -63.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:47:32,653 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:47:32,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 138.4 MB. Free memory was 85.4 MB in the beginning and 76.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:32,655 INFO L168 Benchmark]: Boogie Preprocessor took 137.37 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.3 MB in the beginning and 176.2 MB in the end (delta: -99.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:32,656 INFO L168 Benchmark]: RCFGBuilder took 266.42 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 165.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:32,657 INFO L168 Benchmark]: Abstract Interpretation took 324.95 ms. Allocated memory is still 198.7 MB. Free memory was 165.2 MB in the beginning and 149.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:32,661 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 138.4 MB. Free memory was 85.4 MB in the beginning and 76.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.37 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.3 MB in the beginning and 176.2 MB in the end (delta: -99.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.42 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 165.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 324.95 ms. Allocated memory is still 198.7 MB. Free memory was 165.2 MB in the beginning and 149.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 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...