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_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:47:29,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:47:29,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:47:29,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:47:29,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:47:29,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:47:29,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:47:29,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:47:29,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:47:29,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:47:29,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:47:29,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:47:29,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:47:29,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:47:29,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:47:29,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:47:29,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:47:29,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:47:29,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:47:29,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:47:29,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:47:29,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:47:29,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:47:29,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:47:29,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:47:29,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:47:29,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:47:29,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:47:29,636 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 13:47:29,660 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:47:29,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:47:29,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:47:29,661 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:47:29,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:47:29,661 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:47:29,662 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:47:29,662 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:47:29,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:47:29,662 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:47:29,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:47:29,663 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:47:29,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:47:29,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:47:29,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:47:29,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:47:29,665 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:47:29,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:47:29,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:47:29,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:47:29,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:47:29,666 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:47:29,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:47:29,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:47:29,666 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:47:29,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:47:29,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:47:29,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:47:29,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:47:29,710 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:47:29,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2019-09-20 13:47:29,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425019339/db4e56e100ec4d89a09b746733b559ff/FLAGf3d3a701f [2019-09-20 13:47:30,275 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:47:30,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2019-09-20 13:47:30,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425019339/db4e56e100ec4d89a09b746733b559ff/FLAGf3d3a701f [2019-09-20 13:47:30,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425019339/db4e56e100ec4d89a09b746733b559ff [2019-09-20 13:47:30,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:47:30,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:47:30,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:30,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:47:30,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:47:30,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e64ccee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30, skipping insertion in model container [2019-09-20 13:47:30,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,644 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:47:30,659 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:47:30,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:30,828 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:47:30,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:30,851 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:47:30,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30 WrapperNode [2019-09-20 13:47:30,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:30,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:47:30,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:47:30,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:47:30,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (1/1) ... [2019-09-20 13:47:30,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:47:30,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:47:30,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:47:30,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:47:30,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:30" (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 13:47:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:47:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:47:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:47:31,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:47:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:47:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:47:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:47:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:47:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:47:31,167 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:47:31,167 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:47:31,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:31 BoogieIcfgContainer [2019-09-20 13:47:31,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:47:31,169 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-20 13:47:31,169 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-20 13:47:31,169 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-20 13:47:31,170 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:31" (1/1) ... [2019-09-20 13:47:31,189 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:47:31,250 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-20 13:47:31,446 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:47:31,482 INFO L272 AbstractInterpreter]: Visited 19 different actions 97 times. Merged at 4 different actions 24 times. Widened at 1 different actions 4 times. Performed 116 root evaluator evaluations with a maximum evaluation depth of 7. Performed 116 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 7 fixpoints after 2 different actions. Largest state had 4 variables. [2019-09-20 13:47:31,483 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-20 13:47:31,486 INFO L168 Benchmark]: Toolchain (without parser) took 856.74 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.8 MB in the beginning and 150.9 MB in the end (delta: -64.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:47:31,487 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:47:31,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.77 ms. Allocated memory is still 140.5 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:31,493 INFO L168 Benchmark]: Boogie Preprocessor took 115.15 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 178.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:31,494 INFO L168 Benchmark]: RCFGBuilder took 200.35 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 167.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:31,495 INFO L168 Benchmark]: Abstract Interpretation took 313.91 ms. Allocated memory is still 200.3 MB. Free memory was 167.3 MB in the beginning and 150.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:31,499 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 was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.77 ms. Allocated memory is still 140.5 MB. Free memory was 86.6 MB in the beginning and 77.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.15 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 77.3 MB in the beginning and 178.3 MB in the end (delta: -101.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 200.35 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 167.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 313.91 ms. Allocated memory is still 200.3 MB. Free memory was 167.3 MB in the beginning and 150.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 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 != 64) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...