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_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-11 16:12:03,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-11 16:12:03,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-11 16:12:03,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-11 16:12:03,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-11 16:12:03,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-11 16:12:03,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-11 16:12:03,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-11 16:12:03,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-11 16:12:03,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-11 16:12:03,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-11 16:12:03,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-11 16:12:03,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-11 16:12:03,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-11 16:12:03,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-11 16:12:03,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-11 16:12:03,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-11 16:12:03,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-11 16:12:03,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-11 16:12:03,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-11 16:12:03,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-11 16:12:03,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-11 16:12:03,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-11 16:12:03,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-11 16:12:03,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-11 16:12:03,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-11 16:12:03,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-11 16:12:03,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-11 16:12:03,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-11 16:12:03,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-11 16:12:03,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-11 16:12:03,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-11 16:12:03,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-11 16:12:03,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-11 16:12:03,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-11 16:12:03,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-11 16:12:03,113 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 16:12:03,128 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-11 16:12:03,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-11 16:12:03,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-11 16:12:03,129 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-11 16:12:03,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-11 16:12:03,130 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-11 16:12:03,130 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-11 16:12:03,130 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-11 16:12:03,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-11 16:12:03,131 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-11 16:12:03,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-11 16:12:03,132 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-11 16:12:03,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-11 16:12:03,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-11 16:12:03,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-11 16:12:03,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-11 16:12:03,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-11 16:12:03,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-11 16:12:03,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-11 16:12:03,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-11 16:12:03,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-11 16:12:03,134 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-11 16:12:03,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-11 16:12:03,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-11 16:12:03,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-11 16:12:03,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-11 16:12:03,135 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-11 16:12:03,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-11 16:12:03,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-11 16:12:03,135 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-11 16:12:03,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-11 16:12:03,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-11 16:12:03,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-11 16:12:03,187 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-11 16:12:03,187 INFO L275 PluginConnector]: CDTParser initialized [2019-09-11 16:12:03,188 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2019-09-11 16:12:03,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfcc69f29/8f6167ab916a4089a513b714c8cd1fd3/FLAG45e582e18 [2019-09-11 16:12:03,673 INFO L306 CDTParser]: Found 1 translation units. [2019-09-11 16:12:03,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2019-09-11 16:12:03,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfcc69f29/8f6167ab916a4089a513b714c8cd1fd3/FLAG45e582e18 [2019-09-11 16:12:04,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfcc69f29/8f6167ab916a4089a513b714c8cd1fd3 [2019-09-11 16:12:04,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-11 16:12:04,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-11 16:12:04,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-11 16:12:04,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-11 16:12:04,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-11 16:12:04,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c13f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04, skipping insertion in model container [2019-09-11 16:12:04,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,132 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-11 16:12:04,145 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-11 16:12:04,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:12:04,302 INFO L188 MainTranslator]: Completed pre-run [2019-09-11 16:12:04,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:12:04,334 INFO L192 MainTranslator]: Completed translation [2019-09-11 16:12:04,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04 WrapperNode [2019-09-11 16:12:04,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-11 16:12:04,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-11 16:12:04,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-11 16:12:04,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-11 16:12:04,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-11 16:12:04,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-11 16:12:04,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-11 16:12:04,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-11 16:12:04,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:12:04" (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 16:12:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-11 16:12:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-11 16:12:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-11 16:12:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-11 16:12:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-11 16:12:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-11 16:12:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-11 16:12:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-11 16:12:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-11 16:12:04,686 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-11 16:12:04,687 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-11 16:12:04,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:12:04 BoogieIcfgContainer [2019-09-11 16:12:04,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-11 16:12:04,689 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-11 16:12:04,689 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-11 16:12:04,690 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-11 16:12:04,691 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:12:04" (1/1) ... [2019-09-11 16:12:04,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-11 16:12:04,807 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-11 16:12:06,252 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-11 16:12:06,271 INFO L272 AbstractInterpreter]: Visited 19 different actions 97 times. Merged at 4 different actions 24 times. Widened at 1 different actions 4 times. Performed 125 root evaluator evaluations with a maximum evaluation depth of 12. Performed 125 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 7 fixpoints after 2 different actions. Largest state had 4 variables. [2019-09-11 16:12:06,272 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-11 16:12:06,276 INFO L168 Benchmark]: Toolchain (without parser) took 2157.13 ms. Allocated memory was 135.8 MB in the beginning and 251.1 MB in the end (delta: 115.3 MB). Free memory was 92.2 MB in the beginning and 108.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,278 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 135.8 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.31 ms. Allocated memory is still 135.8 MB. Free memory was 92.0 MB in the beginning and 82.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,282 INFO L168 Benchmark]: Boogie Preprocessor took 123.35 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 82.9 MB in the beginning and 179.1 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,284 INFO L168 Benchmark]: RCFGBuilder took 229.59 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 168.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,285 INFO L168 Benchmark]: Abstract Interpretation took 1582.66 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 168.1 MB in the beginning and 108.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2019-09-11 16:12:06,295 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 135.8 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 217.31 ms. Allocated memory is still 135.8 MB. Free memory was 92.0 MB in the beginning and 82.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.35 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 82.9 MB in the beginning and 179.1 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.59 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 168.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 1582.66 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 168.1 MB in the beginning and 108.6 MB in the end (delta: 59.5 MB). Peak memory consumption was 108.3 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(y % 3) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...