java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cdfpl/square_2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fab3c18 [2019-08-22 21:23:16,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-22 21:23:16,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-22 21:23:16,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-22 21:23:16,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-22 21:23:16,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-22 21:23:16,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-22 21:23:16,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-22 21:23:16,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-22 21:23:16,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-22 21:23:16,583 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-22 21:23:16,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-22 21:23:16,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-22 21:23:16,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-22 21:23:16,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-22 21:23:16,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-22 21:23:16,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-22 21:23:16,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-22 21:23:16,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-22 21:23:16,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-22 21:23:16,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-22 21:23:16,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-22 21:23:16,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-22 21:23:16,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-22 21:23:16,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-22 21:23:16,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-22 21:23:16,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-22 21:23:16,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-22 21:23:16,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-22 21:23:16,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-22 21:23:16,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-22 21:23:16,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-22 21:23:16,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-22 21:23:16,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-22 21:23:16,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-22 21:23:16,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-22 21:23:16,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-08-22 21:23:16,650 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-22 21:23:16,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-22 21:23:16,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-22 21:23:16,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-22 21:23:16,654 INFO L138 SettingsManager]: * Use SBE=true [2019-08-22 21:23:16,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-22 21:23:16,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-22 21:23:16,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-22 21:23:16,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-22 21:23:16,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-22 21:23:16,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-22 21:23:16,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-22 21:23:16,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-22 21:23:16,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-22 21:23:16,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-22 21:23:16,658 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-22 21:23:16,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-22 21:23:16,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-22 21:23:16,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-22 21:23:16,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-22 21:23:16,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-22 21:23:16,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-22 21:23:16,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-22 21:23:16,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-22 21:23:16,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-22 21:23:16,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-22 21:23:16,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-22 21:23:16,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-22 21:23:16,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-22 21:23:16,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-22 21:23:16,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-22 21:23:16,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-22 21:23:16,727 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-22 21:23:16,728 INFO L275 PluginConnector]: CDTParser initialized [2019-08-22 21:23:16,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_2.i [2019-08-22 21:23:16,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab82b256/667bb8de2fb44655b1b661a727662f51/FLAGe60e965e0 [2019-08-22 21:23:17,188 INFO L306 CDTParser]: Found 1 translation units. [2019-08-22 21:23:17,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_2.i [2019-08-22 21:23:17,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab82b256/667bb8de2fb44655b1b661a727662f51/FLAGe60e965e0 [2019-08-22 21:23:17,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab82b256/667bb8de2fb44655b1b661a727662f51 [2019-08-22 21:23:17,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-22 21:23:17,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-22 21:23:17,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-22 21:23:17,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-22 21:23:17,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-22 21:23:17,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e07c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17, skipping insertion in model container [2019-08-22 21:23:17,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,611 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-22 21:23:17,629 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-22 21:23:17,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-22 21:23:17,835 INFO L188 MainTranslator]: Completed pre-run [2019-08-22 21:23:17,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-22 21:23:17,868 INFO L192 MainTranslator]: Completed translation [2019-08-22 21:23:17,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17 WrapperNode [2019-08-22 21:23:17,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-22 21:23:17,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-22 21:23:17,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-22 21:23:17,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-22 21:23:17,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (1/1) ... [2019-08-22 21:23:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-22 21:23:17,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-22 21:23:17,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-22 21:23:17,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-22 21:23:17,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:23:17" (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 [2019-08-22 21:23:18,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-22 21:23:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-22 21:23:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-22 21:23:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-22 21:23:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-22 21:23:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-08-22 21:23:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-22 21:23:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-22 21:23:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-22 21:23:18,167 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-22 21:23:18,167 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-22 21:23:18,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:23:18 BoogieIcfgContainer [2019-08-22 21:23:18,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-22 21:23:18,169 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-22 21:23:18,169 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-22 21:23:18,169 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-22 21:23:18,170 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:23:18" (1/1) ... [2019-08-22 21:23:18,184 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-22 21:23:18,186 INFO L155 IcfgInterpreter]: Building call graph [2019-08-22 21:23:18,192 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-22 21:23:18,201 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-22 21:23:18,202 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-22 21:23:18,250 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 1 [2019-08-22 21:23:18,272 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-22 21:23:18,272 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-22 21:23:18,274 INFO L179 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 16#(= main_~x~0 main_~IN~0) [2019-08-22 21:23:18,283 INFO L91 terpretationObserver]: ✘ Some locations of interest might be reachable, see reported results. [2019-08-22 21:23:18,283 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-22 21:23:18,286 INFO L168 Benchmark]: Toolchain (without parser) took 692.91 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 88.6 MB in the beginning and 159.0 MB in the end (delta: -70.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-22 21:23:18,287 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-22 21:23:18,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.02 ms. Allocated memory is still 132.1 MB. Free memory was 88.4 MB in the beginning and 79.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-08-22 21:23:18,290 INFO L168 Benchmark]: Boogie Preprocessor took 117.44 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 79.0 MB in the beginning and 174.7 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-08-22 21:23:18,291 INFO L168 Benchmark]: RCFGBuilder took 180.67 ms. Allocated memory is still 198.2 MB. Free memory was 174.7 MB in the beginning and 164.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-08-22 21:23:18,291 INFO L168 Benchmark]: Symbolic Interpretation took 114.59 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 159.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-08-22 21:23:18,296 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 16#(= main_~x~0 main_~IN~0). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.02 ms. Allocated memory is still 132.1 MB. Free memory was 88.4 MB in the beginning and 79.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.44 ms. Allocated memory was 132.1 MB in the beginning and 198.2 MB in the end (delta: 66.1 MB). Free memory was 79.0 MB in the beginning and 174.7 MB in the end (delta: -95.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 180.67 ms. Allocated memory is still 198.2 MB. Free memory was 174.7 MB in the beginning and 164.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 114.59 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 159.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...