/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:30:27,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:30:27,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:30:27,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:30:27,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:30:27,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:30:27,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:30:27,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:30:27,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:30:27,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:30:27,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:30:27,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:30:27,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:30:27,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:30:27,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:30:27,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:30:27,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:30:27,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:30:27,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:30:27,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:30:27,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:30:27,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:30:27,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:30:27,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:30:27,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:30:27,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:30:27,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:30:27,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:30:27,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:30:27,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:30:27,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:30:27,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:30:27,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:30:27,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:30:27,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:30:27,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:30:27,837 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:30:27,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:30:27,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:30:27,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:30:27,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:30:27,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:30:27,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:30:27,838 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:30:27,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:30:28,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:30:28,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:30:28,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:30:28,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:30:28,285 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:30:28,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2021-02-22 01:30:28,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f23b5a8e/8b32d6c15d9f45bca2c6fbfb4aa85aeb/FLAG797d30b08 [2021-02-22 01:30:29,034 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:30:29,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2021-02-22 01:30:29,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f23b5a8e/8b32d6c15d9f45bca2c6fbfb4aa85aeb/FLAG797d30b08 [2021-02-22 01:30:29,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f23b5a8e/8b32d6c15d9f45bca2c6fbfb4aa85aeb [2021-02-22 01:30:29,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:30:29,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:30:29,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:30:29,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:30:29,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:30:29,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2bbbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29, skipping insertion in model container [2021-02-22 01:30:29,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:30:29,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:30:29,726 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] [2021-02-22 01:30:29,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:30:29,779 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:30:29,798 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] [2021-02-22 01:30:29,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:30:29,832 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:30:29,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29 WrapperNode [2021-02-22 01:30:29,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:30:29,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:30:29,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:30:29,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:30:29,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (1/1) ... [2021-02-22 01:30:29,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:30:29,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:30:29,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:30:29,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:30:29,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (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 [2021-02-22 01:30:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:30:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:30:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:30:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 01:30:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 01:30:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2021-02-22 01:30:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:30:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:30:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:30:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:30:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:30:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:30:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 01:30:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 01:30:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2021-02-22 01:30:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:30:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:30:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:30:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:30:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:30:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:30:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:30:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:30:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:30:30,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:30:30,424 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:30:30,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:30:30 BoogieIcfgContainer [2021-02-22 01:30:30,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:30:30,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:30:30,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:30:30,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:30:30,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:30:29" (1/3) ... [2021-02-22 01:30:30,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140fb8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:30:30, skipping insertion in model container [2021-02-22 01:30:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:30:29" (2/3) ... [2021-02-22 01:30:30,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140fb8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:30:30, skipping insertion in model container [2021-02-22 01:30:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:30:30" (3/3) ... [2021-02-22 01:30:30,439 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-02-22 01:30:30,448 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:30:30,454 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:30:30,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:30:30,526 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:30:30,527 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:30:30,527 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:30:30,530 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:30:30,530 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:30:30,530 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:30:30,531 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:30:30,531 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:30:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-22 01:30:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-22 01:30:30,589 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:30:30,590 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] [2021-02-22 01:30:30,591 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:30:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:30:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash 803602432, now seen corresponding path program 1 times [2021-02-22 01:30:30,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:30:30,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928376491] [2021-02-22 01:30:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:30:30,697 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:30:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:30:30,982 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:30:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:30:31,094 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:30:31,143 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:30:31,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:30:31,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:30:31,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:30:31 BoogieIcfgContainer [2021-02-22 01:30:31,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:30:31,170 INFO L168 Benchmark]: Toolchain (without parser) took 1738.09 ms. Allocated memory is still 168.8 MB. Free memory was 145.6 MB in the beginning and 123.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:31,170 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 168.8 MB. Free memory is still 142.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:30:31,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.42 ms. Allocated memory is still 168.8 MB. Free memory was 144.3 MB in the beginning and 134.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:31,172 INFO L168 Benchmark]: Boogie Preprocessor took 40.22 ms. Allocated memory is still 168.8 MB. Free memory was 133.8 MB in the beginning and 132.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:31,173 INFO L168 Benchmark]: RCFGBuilder took 552.27 ms. Allocated memory is still 168.8 MB. Free memory was 132.2 MB in the beginning and 143.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:31,174 INFO L168 Benchmark]: TraceAbstraction took 736.38 ms. Allocated memory is still 168.8 MB. Free memory was 142.6 MB in the beginning and 123.2 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:30:31,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 168.8 MB. Free memory is still 142.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 383.42 ms. Allocated memory is still 168.8 MB. Free memory was 144.3 MB in the beginning and 134.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.22 ms. Allocated memory is still 168.8 MB. Free memory was 133.8 MB in the beginning and 132.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.27 ms. Allocated memory is still 168.8 MB. Free memory was 132.2 MB in the beginning and 143.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 736.38 ms. Allocated memory is still 168.8 MB. Free memory was 142.6 MB in the beginning and 123.2 MB in the end (delta: 19.4 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: 0.6s, 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...