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/recursive-simple/afterrec_2calls-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-11 16:24:09,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-11 16:24:09,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-11 16:24:09,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-11 16:24:09,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-11 16:24:09,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-11 16:24:09,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-11 16:24:09,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-11 16:24:09,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-11 16:24:09,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-11 16:24:09,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-11 16:24:09,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-11 16:24:09,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-11 16:24:09,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-11 16:24:09,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-11 16:24:09,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-11 16:24:09,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-11 16:24:09,974 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 [2019-09-11 16:24:09,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-11 16:24:09,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-11 16:24:09,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-11 16:24:09,990 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-11 16:24:09,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-11 16:24:09,991 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-11 16:24:09,991 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-11 16:24:09,991 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-11 16:24:09,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-11 16:24:09,992 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-11 16:24:09,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-11 16:24:09,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-11 16:24:09,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-11 16:24:09,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-11 16:24:09,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-11 16:24:09,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-11 16:24:09,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-11 16:24:09,994 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-11 16:24:09,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-11 16:24:09,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-11 16:24:09,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-11 16:24:09,995 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-11 16:24:09,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-11 16:24:09,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-11 16:24:09,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-11 16:24:09,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-11 16:24:09,996 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-11 16:24:09,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-11 16:24:09,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-11 16:24:09,997 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-11 16:24:10,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-11 16:24:10,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-11 16:24:10,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-11 16:24:10,043 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-11 16:24:10,044 INFO L275 PluginConnector]: CDTParser initialized [2019-09-11 16:24:10,044 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c [2019-09-11 16:24:10,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e374ddd5/169cc9bc129a49f3bea920455b16f729/FLAG957195ec8 [2019-09-11 16:24:10,568 INFO L306 CDTParser]: Found 1 translation units. [2019-09-11 16:24:10,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec_2calls-1.c [2019-09-11 16:24:10,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e374ddd5/169cc9bc129a49f3bea920455b16f729/FLAG957195ec8 [2019-09-11 16:24:10,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e374ddd5/169cc9bc129a49f3bea920455b16f729 [2019-09-11 16:24:10,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-11 16:24:10,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-11 16:24:10,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-11 16:24:10,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-11 16:24:10,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-11 16:24:10,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:24:10" (1/1) ... [2019-09-11 16:24:10,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229794bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:10, skipping insertion in model container [2019-09-11 16:24:10,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:24:10" (1/1) ... [2019-09-11 16:24:11,006 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-11 16:24:11,023 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-11 16:24:11,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:24:11,216 INFO L188 MainTranslator]: Completed pre-run [2019-09-11 16:24:11,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:24:11,245 INFO L192 MainTranslator]: Completed translation [2019-09-11 16:24:11,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11 WrapperNode [2019-09-11 16:24:11,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-11 16:24:11,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-11 16:24:11,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-11 16:24:11,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-11 16:24:11,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-11 16:24:11,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-11 16:24:11,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-11 16:24:11,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-11 16:24:11,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:11" (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 [2019-09-11 16:24:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-11 16:24:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-11 16:24:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-11 16:24:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2019-09-11 16:24:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-11 16:24:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-11 16:24:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-11 16:24:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2019-09-11 16:24:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-11 16:24:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-11 16:24:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-11 16:24:11,581 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-11 16:24:11,581 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-11 16:24:11,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:24:11 BoogieIcfgContainer [2019-09-11 16:24:11,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-11 16:24:11,583 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-11 16:24:11,583 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-11 16:24:11,584 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-11 16:24:11,586 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:24:11" (1/1) ... [2019-09-11 16:24:11,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-11 16:24:11,691 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-11 16:24:11,708 INFO L272 AbstractInterpreter]: Visited 17 different actions 20 times. Never merged. Never widened. Performed 18 root evaluator evaluations with a maximum evaluation depth of 3. Performed 18 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 3 variables. [2019-09-11 16:24:11,708 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-11 16:24:11,712 INFO L168 Benchmark]: Toolchain (without parser) took 723.22 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 88.4 MB in the beginning and 161.6 MB in the end (delta: -73.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-11 16:24:11,712 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory is still 107.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-11 16:24:11,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.69 ms. Allocated memory is still 140.5 MB. Free memory was 88.2 MB in the beginning and 79.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:11,714 INFO L168 Benchmark]: Boogie Preprocessor took 112.48 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 79.4 MB in the beginning and 178.3 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:11,715 INFO L168 Benchmark]: RCFGBuilder took 223.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.3 MB in the beginning and 168.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:11,716 INFO L168 Benchmark]: Abstract Interpretation took 125.35 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 161.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:11,721 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 140.5 MB. Free memory is still 107.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.69 ms. Allocated memory is still 140.5 MB. Free memory was 88.2 MB in the beginning and 79.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.48 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 79.4 MB in the beginning and 178.3 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 223.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.3 MB in the beginning and 168.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 125.35 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 161.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 17]: 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: [L21] CALL f(4) [L7] COND FALSE !(n<3) [L8] n-- [L9] CALL f2(n) [L14] COND FALSE !(n<3) [L15] n-- [L16] CALL f(n) [L7] COND TRUE n<3 [L16] RET f(n) [L17] __VERIFIER_error() - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...