/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:36:21,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:36:21,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:36:21,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:36:21,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:36:21,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:36:21,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:36:21,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:36:21,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:36:21,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:36:21,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:36:21,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:36:21,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:36:21,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:36:21,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:36:21,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:36:21,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:36:21,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:36:21,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:36:21,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:36:21,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:36:21,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:36:21,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:36:21,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:36:21,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:36:21,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:36:21,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:36:21,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:36:21,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:36:21,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:36:21,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:36:21,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:36:21,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:36:21,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:36:21,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:36:21,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:36:21,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:36:21,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:36:21,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:36:21,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:36:21,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:36:21,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:36:21,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:36:21,225 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:36:21,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:36:21,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:36:21,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:36:21,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:36:21,644 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:36:21,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2021-02-23 17:36:21,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbefb12/4448da072902454bb4abf846788c9294/FLAGecb72475e [2021-02-23 17:36:22,408 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:36:22,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2021-02-23 17:36:22,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbefb12/4448da072902454bb4abf846788c9294/FLAGecb72475e [2021-02-23 17:36:22,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbbefb12/4448da072902454bb4abf846788c9294 [2021-02-23 17:36:22,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:36:22,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:36:22,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:22,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:36:22,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:36:22,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:22" (1/1) ... [2021-02-23 17:36:22,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3509d6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:22, skipping insertion in model container [2021-02-23 17:36:22,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:22" (1/1) ... [2021-02-23 17:36:22,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:36:22,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:36:22,935 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c[587,600] [2021-02-23 17:36:22,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:22,971 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:36:22,985 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c[587,600] [2021-02-23 17:36:22,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:23,016 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:36:23,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23 WrapperNode [2021-02-23 17:36:23,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:23,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:36:23,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:36:23,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:36:23,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (1/1) ... [2021-02-23 17:36:23,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:36:23,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:36:23,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:36:23,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:36:23,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (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 [2021-02-23 17:36:23,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:36:23,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:36:23,157 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:36:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 17:36:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 17:36:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2021-02-23 17:36:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:36:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:36:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:36:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:36:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:36:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:36:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 17:36:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 17:36:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2021-02-23 17:36:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:36:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:36:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:36:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:36:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:36:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:36:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:36:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:36:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:36:23,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:36:23,653 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:36:23,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:23 BoogieIcfgContainer [2021-02-23 17:36:23,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:36:23,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:36:23,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:36:23,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:36:23,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:36:22" (1/3) ... [2021-02-23 17:36:23,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ec29f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:23, skipping insertion in model container [2021-02-23 17:36:23,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:23" (2/3) ... [2021-02-23 17:36:23,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ec29f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:23, skipping insertion in model container [2021-02-23 17:36:23,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:23" (3/3) ... [2021-02-23 17:36:23,672 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-02-23 17:36:23,679 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:36:23,684 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:36:23,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:36:23,734 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:36:23,734 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:36:23,734 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:36:23,734 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:36:23,734 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:36:23,735 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:36:23,735 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:36:23,735 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:36:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-23 17:36:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 17:36:23,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:36:23,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:36:23,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:36:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:36:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 803602432, now seen corresponding path program 1 times [2021-02-23 17:36:23,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:36:23,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922878544] [2021-02-23 17:36:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:36:23,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:36:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:24,013 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:24,160 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:24,218 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:36:24,218 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:36:24,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:36:24,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:36:24 BoogieIcfgContainer [2021-02-23 17:36:24,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:36:24,245 INFO L168 Benchmark]: Toolchain (without parser) took 1503.31 ms. Allocated memory is still 170.9 MB. Free memory was 146.0 MB in the beginning and 92.0 MB in the end (delta: 54.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:24,246 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 170.9 MB. Free memory is still 144.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:36:24,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.85 ms. Allocated memory is still 170.9 MB. Free memory was 144.7 MB in the beginning and 134.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:24,248 INFO L168 Benchmark]: Boogie Preprocessor took 41.68 ms. Allocated memory is still 170.9 MB. Free memory was 134.4 MB in the beginning and 132.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:24,249 INFO L168 Benchmark]: RCFGBuilder took 594.49 ms. Allocated memory is still 170.9 MB. Free memory was 132.6 MB in the beginning and 111.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:24,250 INFO L168 Benchmark]: TraceAbstraction took 581.06 ms. Allocated memory is still 170.9 MB. Free memory was 111.1 MB in the beginning and 92.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:24,255 INFO L339 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 170.9 MB. Free memory is still 144.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.85 ms. Allocated memory is still 170.9 MB. Free memory was 144.7 MB in the beginning and 134.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.68 ms. Allocated memory is still 170.9 MB. Free memory was 134.4 MB in the beginning and 132.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 594.49 ms. Allocated memory is still 170.9 MB. Free memory was 132.6 MB in the beginning and 111.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 581.06 ms. Allocated memory is still 170.9 MB. Free memory was 111.1 MB in the beginning and 92.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 65. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...