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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-11 16:24:04,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-11 16:24:04,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-11 16:24:04,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-11 16:24:04,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-11 16:24:04,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-11 16:24:04,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-11 16:24:04,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-11 16:24:04,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-11 16:24:04,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-11 16:24:04,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-11 16:24:04,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-11 16:24:04,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-11 16:24:04,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-11 16:24:04,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-11 16:24:04,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-11 16:24:04,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-11 16:24:04,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-11 16:24:04,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-11 16:24:04,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-11 16:24:04,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-11 16:24:04,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-11 16:24:04,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-11 16:24:04,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-11 16:24:04,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2019-09-11 16:24:04,390 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 16:24:04,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-11 16:24:04,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-11 16:24:04,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-11 16:24:04,406 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-11 16:24:04,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-11 16:24:04,407 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-11 16:24:04,407 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-11 16:24:04,408 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-11 16:24:04,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-11 16:24:04,408 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-11 16:24:04,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-11 16:24:04,409 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-11 16:24:04,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-11 16:24:04,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-11 16:24:04,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-11 16:24:04,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-11 16:24:04,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-11 16:24:04,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-11 16:24:04,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-11 16:24:04,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-11 16:24:04,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-11 16:24:04,411 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-11 16:24:04,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-11 16:24:04,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-11 16:24:04,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-11 16:24:04,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-11 16:24:04,412 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-11 16:24:04,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-11 16:24:04,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-11 16:24:04,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-11 16:24:04,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-11 16:24:04,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-11 16:24:04,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-11 16:24:04,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-11 16:24:04,464 INFO L275 PluginConnector]: CDTParser initialized [2019-09-11 16:24:04,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2019-09-11 16:24:04,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43502d992/faeb862387104cdfb71fb3858599ae6a/FLAGffa0f96bb [2019-09-11 16:24:04,999 INFO L306 CDTParser]: Found 1 translation units. [2019-09-11 16:24:05,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2019-09-11 16:24:05,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43502d992/faeb862387104cdfb71fb3858599ae6a/FLAGffa0f96bb [2019-09-11 16:24:05,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43502d992/faeb862387104cdfb71fb3858599ae6a [2019-09-11 16:24:05,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-11 16:24:05,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-11 16:24:05,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-11 16:24:05,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-11 16:24:05,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-11 16:24:05,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1043339a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05, skipping insertion in model container [2019-09-11 16:24:05,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-11 16:24:05,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-11 16:24:05,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:24:05,563 INFO L188 MainTranslator]: Completed pre-run [2019-09-11 16:24:05,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:24:05,603 INFO L192 MainTranslator]: Completed translation [2019-09-11 16:24:05,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05 WrapperNode [2019-09-11 16:24:05,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-11 16:24:05,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-11 16:24:05,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-11 16:24:05,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-11 16:24:05,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (1/1) ... [2019-09-11 16:24:05,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-11 16:24:05,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-11 16:24:05,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-11 16:24:05,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-11 16:24:05,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:24:05" (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 16:24:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-11 16:24:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-11 16:24:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-09-11 16:24:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-11 16:24:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-11 16:24:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-11 16:24:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-09-11 16:24:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-11 16:24:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-11 16:24:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-11 16:24:06,032 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-11 16:24:06,033 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-11 16:24:06,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:24:06 BoogieIcfgContainer [2019-09-11 16:24:06,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-11 16:24:06,044 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-11 16:24:06,044 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-11 16:24:06,045 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-11 16:24:06,046 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:24:06" (1/1) ... [2019-09-11 16:24:06,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-11 16:24:06,518 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-11 16:24:06,548 INFO L272 AbstractInterpreter]: Visited 31 different actions 317 times. Merged at 11 different actions 113 times. Never widened. Performed 482 root evaluator evaluations with a maximum evaluation depth of 6. Performed 482 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 5 different actions. Largest state had 9 variables. [2019-09-11 16:24:06,548 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-11 16:24:06,553 INFO L168 Benchmark]: Toolchain (without parser) took 1194.07 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 90.5 MB in the beginning and 144.7 MB in the end (delta: -54.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,555 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 108.4 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.69 ms. Allocated memory is still 142.1 MB. Free memory was 90.3 MB in the beginning and 81.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,559 INFO L168 Benchmark]: Boogie Preprocessor took 124.93 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 81.0 MB in the beginning and 179.5 MB in the end (delta: -98.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,561 INFO L168 Benchmark]: RCFGBuilder took 313.51 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 167.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,562 INFO L168 Benchmark]: Abstract Interpretation took 504.15 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 144.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-09-11 16:24:06,573 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 108.4 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.69 ms. Allocated memory is still 142.1 MB. Free memory was 90.3 MB in the beginning and 81.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.93 ms. Allocated memory was 142.1 MB in the beginning and 201.9 MB in the end (delta: 59.8 MB). Free memory was 81.0 MB in the beginning and 179.5 MB in the end (delta: -98.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.51 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 167.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 504.15 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 144.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 37]: 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: [L26] int m = __VERIFIER_nondet_int(); [L27] COND FALSE !(m < 0 || m > 46340) [L30] int n = __VERIFIER_nondet_int(); [L31] COND FALSE !(n < 0 || n > 46340) [L34] CALL, EXPR mult(m, n) [L16] COND FALSE !(m < 0) [L19] COND TRUE m == 0 [L20] return 0; [L34] RET, EXPR mult(m, n) [L34] int res1 = mult(m, n); [L35] CALL, EXPR mult(n, m) [L16] COND FALSE !(m < 0) [L19] COND FALSE !(m == 0) [L22] CALL, EXPR mult(n, m - 1) [L16] COND FALSE !(m < 0) [L19] COND TRUE m == 0 [L20] return 0; [L22] RET, EXPR mult(n, m - 1) [L22] return n + mult(n, m - 1); [L35] RET, EXPR mult(n, m) [L35] int res2 = mult(n, m); [L36] COND TRUE res1 != res2 && m > 0 && n > 0 [L37] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...