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_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a32b1f7 [2019-08-18 06:17:17,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-18 06:17:17,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-18 06:17:17,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-18 06:17:17,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-18 06:17:17,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-18 06:17:17,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-18 06:17:17,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-18 06:17:17,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-18 06:17:17,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-18 06:17:17,523 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-18 06:17:17,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-18 06:17:17,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-18 06:17:17,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-18 06:17:17,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-18 06:17:17,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-18 06:17:17,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-18 06:17:17,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-18 06:17:17,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-18 06:17:17,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-18 06:17:17,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-18 06:17:17,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-18 06:17:17,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-18 06:17:17,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-18 06:17:17,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-18 06:17:17,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-18 06:17:17,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-18 06:17:17,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-18 06:17:17,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-18 06:17:17,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-18 06:17:17,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-18 06:17:17,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-18 06:17:17,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-18 06:17:17,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-18 06:17:17,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-18 06:17:17,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-18 06:17:17,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-18 06:17:17,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-18 06:17:17,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-18 06:17:17,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-18 06:17:17,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-18 06:17:17,550 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 [2019-08-18 06:17:17,564 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-18 06:17:17,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-18 06:17:17,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-18 06:17:17,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-18 06:17:17,566 INFO L138 SettingsManager]: * Use SBE=true [2019-08-18 06:17:17,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-18 06:17:17,567 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-18 06:17:17,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-18 06:17:17,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-18 06:17:17,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-18 06:17:17,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-18 06:17:17,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-18 06:17:17,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-18 06:17:17,568 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-18 06:17:17,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-18 06:17:17,569 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-18 06:17:17,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-18 06:17:17,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-18 06:17:17,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-18 06:17:17,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-18 06:17:17,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-18 06:17:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-18 06:17:17,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-18 06:17:17,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-18 06:17:17,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-18 06:17:17,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-18 06:17:17,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-18 06:17:17,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-18 06:17:17,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-18 06:17:17,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-18 06:17:17,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-18 06:17:17,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-18 06:17:17,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-18 06:17:17,618 INFO L275 PluginConnector]: CDTParser initialized [2019-08-18 06:17:17,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_4.i [2019-08-18 06:17:17,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0eaff49/abc039ceea0d4593b5831d533c2e5198/FLAG02cd1e145 [2019-08-18 06:17:18,101 INFO L306 CDTParser]: Found 1 translation units. [2019-08-18 06:17:18,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_4.i [2019-08-18 06:17:18,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0eaff49/abc039ceea0d4593b5831d533c2e5198/FLAG02cd1e145 [2019-08-18 06:17:18,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0eaff49/abc039ceea0d4593b5831d533c2e5198 [2019-08-18 06:17:18,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-18 06:17:18,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-18 06:17:18,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-18 06:17:18,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-18 06:17:18,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-18 06:17:18,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0a9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18, skipping insertion in model container [2019-08-18 06:17:18,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-18 06:17:18,560 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-18 06:17:18,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-18 06:17:18,731 INFO L188 MainTranslator]: Completed pre-run [2019-08-18 06:17:18,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-18 06:17:18,771 INFO L192 MainTranslator]: Completed translation [2019-08-18 06:17:18,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18 WrapperNode [2019-08-18 06:17:18,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-18 06:17:18,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-18 06:17:18,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-18 06:17:18,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-18 06:17:18,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (1/1) ... [2019-08-18 06:17:18,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-18 06:17:18,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-18 06:17:18,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-18 06:17:18,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-18 06:17:18,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:17:18" (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 [2019-08-18 06:17:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-18 06:17:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-18 06:17:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-18 06:17:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-18 06:17:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-18 06:17:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-08-18 06:17:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-18 06:17:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-18 06:17:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-18 06:17:19,135 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-18 06:17:19,135 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-18 06:17:19,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:17:19 BoogieIcfgContainer [2019-08-18 06:17:19,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-18 06:17:19,137 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-18 06:17:19,137 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-18 06:17:19,137 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-18 06:17:19,138 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:17:19" (1/1) ... [2019-08-18 06:17:19,149 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-18 06:17:19,152 INFO L155 IcfgInterpreter]: Building call graph [2019-08-18 06:17:19,159 INFO L160 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-18 06:17:19,167 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-18 06:17:19,169 INFO L185 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 [2019-08-18 06:17:19,214 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 1 [2019-08-18 06:17:19,228 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-18 06:17:19,229 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-18 06:17:19,231 INFO L179 IcfgInterpreter]: Location mainErr0ASSERT_VIOLATIONERROR_FUNCTION has predicate 12#(= main_~x~0 main_~IN~0) [2019-08-18 06:17:19,241 INFO L92 terpretationObserver]: ✘ Some locations of interest might be reachable, see reported results. [2019-08-18 06:17:19,241 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-18 06:17:19,245 INFO L168 Benchmark]: Toolchain (without parser) took 717.88 ms. Allocated memory was 137.9 MB in the beginning and 197.1 MB in the end (delta: 59.2 MB). Free memory was 85.0 MB in the beginning and 159.6 MB in the end (delta: -74.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-18 06:17:19,246 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-18 06:17:19,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.81 ms. Allocated memory is still 137.9 MB. Free memory was 84.8 MB in the beginning and 75.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-08-18 06:17:19,248 INFO L168 Benchmark]: Boogie Preprocessor took 164.88 ms. Allocated memory was 137.9 MB in the beginning and 197.1 MB in the end (delta: 59.2 MB). Free memory was 75.4 MB in the beginning and 174.6 MB in the end (delta: -99.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-08-18 06:17:19,249 INFO L168 Benchmark]: RCFGBuilder took 198.65 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 164.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-08-18 06:17:19,250 INFO L168 Benchmark]: Symbolic Interpretation took 104.74 ms. Allocated memory is still 197.1 MB. Free memory was 164.5 MB in the beginning and 159.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-08-18 06:17:19,254 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 12#(= 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 137.9 MB. Free memory was 103.9 MB in the beginning and 103.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.81 ms. Allocated memory is still 137.9 MB. Free memory was 84.8 MB in the beginning and 75.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 164.88 ms. Allocated memory was 137.9 MB in the beginning and 197.1 MB in the end (delta: 59.2 MB). Free memory was 75.4 MB in the beginning and 174.6 MB in the end (delta: -99.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 198.65 ms. Allocated memory is still 197.1 MB. Free memory was 174.6 MB in the beginning and 164.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 104.74 ms. Allocated memory is still 197.1 MB. Free memory was 164.5 MB in the beginning and 159.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...