/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 0.2.0-b8ad66e [2020-10-23 20:24:21,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:21,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:21,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:24:21,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:24:21,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:24:21,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:24:21,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:24:21,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:24:21,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:24:21,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:24:21,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:24:21,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:21,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:21,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:21,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:21,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:21,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:21,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:21,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:21,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:21,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:21,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:21,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:21,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:21,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:24:21,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:24:22,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:24:22,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:24:22,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:24:22,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:24:22,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:24:22,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:24:22,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:24:22,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:24:22,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:24:22,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:22,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:22,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:22,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:22,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:22,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:22,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:22,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:22,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:22,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:22,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:22,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:22,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:22,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:22,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:22,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:22,025 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:22,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:22,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:22,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:22,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:22,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:22,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:22,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:22,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:22,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:22,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:22,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:22,498 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:22,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-10-23 20:24:22,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4479dc7/9d8756a7fffd44d790f936e2baa7c2fd/FLAG89c994e23 [2020-10-23 20:24:23,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:23,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-10-23 20:24:23,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4479dc7/9d8756a7fffd44d790f936e2baa7c2fd/FLAG89c994e23 [2020-10-23 20:24:23,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4479dc7/9d8756a7fffd44d790f936e2baa7c2fd [2020-10-23 20:24:23,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:23,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:23,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:23,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:23,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:23,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:23" (1/1) ... [2020-10-23 20:24:23,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbd1600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:23, skipping insertion in model container [2020-10-23 20:24:23,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:23" (1/1) ... [2020-10-23 20:24:23,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:23,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:23,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:23,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:24,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:24,066 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:24,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24 WrapperNode [2020-10-23 20:24:24,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:24,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:24,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:24,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:24,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (1/1) ... [2020-10-23 20:24:24,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:24,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:24,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:24,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:24,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (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 [2020-10-23 20:24:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 20:24:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:24:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-10-23 20:24:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:24:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 20:24:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:24:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-10-23 20:24:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:24,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:24,655 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:24:24,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:24 BoogieIcfgContainer [2020-10-23 20:24:24,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:24,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:24,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:24,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:24,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:23" (1/3) ... [2020-10-23 20:24:24,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d5f780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:24, skipping insertion in model container [2020-10-23 20:24:24,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:24" (2/3) ... [2020-10-23 20:24:24,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d5f780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:24, skipping insertion in model container [2020-10-23 20:24:24,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:24" (3/3) ... [2020-10-23 20:24:24,669 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-10-23 20:24:24,686 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:24,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:24,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:24,738 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:24,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:24,739 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:24,739 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:24,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:24,739 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:24,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:24,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-23 20:24:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-23 20:24:24,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:24,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:24:24,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:24,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1679496032, now seen corresponding path program 1 times [2020-10-23 20:24:24,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:24,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893466897] [2020-10-23 20:24:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:24,989 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:25,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:25,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:25,396 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:25,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:25,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:25,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:25 BoogieIcfgContainer [2020-10-23 20:24:25,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:25,437 INFO L168 Benchmark]: Toolchain (without parser) took 1810.82 ms. Allocated memory is still 151.0 MB. Free memory was 108.8 MB in the beginning and 89.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,438 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:25,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.35 ms. Allocated memory is still 151.0 MB. Free memory was 108.2 MB in the beginning and 135.0 MB in the end (delta: -26.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,446 INFO L168 Benchmark]: Boogie Preprocessor took 101.93 ms. Allocated memory is still 151.0 MB. Free memory was 135.0 MB in the beginning and 132.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,447 INFO L168 Benchmark]: RCFGBuilder took 483.35 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 111.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,449 INFO L168 Benchmark]: TraceAbstraction took 771.60 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 89.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:25,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.35 ms. Allocated memory is still 151.0 MB. Free memory was 108.2 MB in the beginning and 135.0 MB in the end (delta: -26.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.93 ms. Allocated memory is still 151.0 MB. Free memory was 135.0 MB in the beginning and 132.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 483.35 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 111.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 771.60 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 89.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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] CALL reach_error() [L3] __assert_fail("0", "sqrt_poly2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 84 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=84occurred 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...