/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:43:27,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:43:27,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:43:27,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:43:27,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:43:27,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:43:27,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:43:27,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:43:27,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:43:27,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:43:27,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:43:27,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:43:27,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:43:27,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:43:27,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:43:28,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:43:28,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:43:28,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:43:28,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:43:28,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:43:28,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:43:28,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:43:28,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:43:28,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:43:28,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:43:28,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 04:43:28,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 04:43:28,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 04:43:28,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 04:43:28,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 04:43:28,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 04:43:28,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 04:43:28,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 04:43:28,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:43:28,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:43:28,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:43:28,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:43:28,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:43:28,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:43:28,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:43:28,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:43:28,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:43:28,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:43:28,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:43:28,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:43:28,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:43:28,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:43:28,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:43:28,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:43:28,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:43:28,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:43:28,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:43:28,045 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:43:28,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:43:28,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:43:28,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:43:28,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:43:28,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:43:28,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:43:28,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:43:28,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:43:28,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:43:28,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:43:28,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:43:28,540 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:43:28,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-11-07 04:43:28,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7c93569/742bb268fe3d4a6ba70ff37343bc0447/FLAGc55dc299e [2020-11-07 04:43:29,155 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:43:29,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-11-07 04:43:29,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7c93569/742bb268fe3d4a6ba70ff37343bc0447/FLAGc55dc299e [2020-11-07 04:43:29,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7c93569/742bb268fe3d4a6ba70ff37343bc0447 [2020-11-07 04:43:29,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:43:29,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:43:29,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:43:29,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:43:29,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:43:29,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17403772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29, skipping insertion in model container [2020-11-07 04:43:29,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:43:29,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:43:29,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:43:29,749 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:43:29,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:43:29,795 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:43:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29 WrapperNode [2020-11-07 04:43:29,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:43:29,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:43:29,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:43:29,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:43:29,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (1/1) ... [2020-11-07 04:43:29,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:43:29,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:43:29,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:43:29,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:43:29,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (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 [2020-11-07 04:43:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:43:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:43:29,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:43:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 04:43:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 04:43:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-11-07 04:43:29,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:43:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:43:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:43:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:43:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:43:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 04:43:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 04:43:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 04:43:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-11-07 04:43:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:43:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:43:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:43:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:43:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:43:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:43:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:43:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:43:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:43:30,469 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:43:30,469 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 04:43:30,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:30 BoogieIcfgContainer [2020-11-07 04:43:30,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:43:30,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:43:30,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:43:30,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:43:30,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:43:29" (1/3) ... [2020-11-07 04:43:30,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e25b403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:30, skipping insertion in model container [2020-11-07 04:43:30,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:29" (2/3) ... [2020-11-07 04:43:30,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e25b403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:30, skipping insertion in model container [2020-11-07 04:43:30,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:30" (3/3) ... [2020-11-07 04:43:30,485 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-11-07 04:43:30,504 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:43:30,508 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:43:30,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:43:30,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:43:30,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:43:30,557 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:43:30,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:43:30,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:43:30,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:43:30,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:43:30,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:43:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-11-07 04:43:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 04:43:30,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:43:30,600 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] [2020-11-07 04:43:30,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:43:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:43:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1679496032, now seen corresponding path program 1 times [2020-11-07 04:43:30,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:43:30,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25432908] [2020-11-07 04:43:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:43:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:43:30,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:43:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:43:30,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:43:31,029 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:43:31,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:43:31,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:43:31,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:43:31 BoogieIcfgContainer [2020-11-07 04:43:31,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:43:31,137 INFO L168 Benchmark]: Toolchain (without parser) took 1604.54 ms. Allocated memory is still 168.8 MB. Free memory was 145.0 MB in the beginning and 124.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:43:31,139 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 168.8 MB. Free memory is still 141.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:43:31,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.38 ms. Allocated memory is still 168.8 MB. Free memory was 144.4 MB in the beginning and 133.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:43:31,141 INFO L168 Benchmark]: Boogie Preprocessor took 43.09 ms. Allocated memory is still 168.8 MB. Free memory was 133.4 MB in the beginning and 131.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:43:31,145 INFO L168 Benchmark]: RCFGBuilder took 630.75 ms. Allocated memory is still 168.8 MB. Free memory was 131.8 MB in the beginning and 147.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:43:31,146 INFO L168 Benchmark]: TraceAbstraction took 655.90 ms. Allocated memory is still 168.8 MB. Free memory was 147.1 MB in the beginning and 124.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:43:31,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 168.8 MB. Free memory is still 141.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.38 ms. Allocated memory is still 168.8 MB. Free memory was 144.4 MB in the beginning and 133.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.09 ms. Allocated memory is still 168.8 MB. Free memory was 133.4 MB in the beginning and 131.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.75 ms. Allocated memory is still 168.8 MB. Free memory was 131.8 MB in the beginning and 147.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 655.90 ms. Allocated memory is still 168.8 MB. Free memory was 147.1 MB in the beginning and 124.5 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 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; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=4294967324, C2=4294967303, C3=4294967308, C4=4294967300, C5=4294967323] [L18] double C1 = 0.229761391; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=229761391/1000000000, C2=4294967303, C3=4294967308, C4=4294967300, C5=4294967323] [L19] double C2 = 1.296735525; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C3=4294967308, C4=4294967300, C5=4294967323] [L20] double C3 = -0.901098370; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=4294967300, C5=4294967323] [L21] double C4 = 0.493553400; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, C5=4294967323] [L22] double C5 = -0.118958666; VAL [\old(C0)=4294967313, \old(C1)=4294967324, \old(C2)=4294967303, \old(C3)=4294967308, \old(C4)=4294967300, \old(C5)=4294967323, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] double x,y; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L60] x = __VERIFIER_nondet_double() VAL [__VERIFIER_nondet_double()=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x=4294967320] [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x=4294967320] [L63] CALL, EXPR sqrt_custom(x) VAL [\old(a)=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L31] union u x; VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={3:0}] [L32] double r; VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={3:0}] [L33] int exp; VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={3:0}] [L35] x.d = a VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={3:0}] [L37] EXPR x.i[0] VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, x={3:0}, x.i[0]=4294967319] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.i[0]=4294967319] [L38] EXPR x.i[0] VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.i[0]=4294967314] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.i[0]=4294967314] [L39] EXPR x.d VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.d=4294967312] [L39] r = x.d * 0.5 VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.d=4294967312] [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}] [L43] COND FALSE !(exp % 2 == 0) VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}] [L47] r = r * C0 VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}] [L50] x.i[0] = (exp/2 + 511) << 20 VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}] [L51] EXPR x.d VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.d=4294967299] [L51] r = r * x.d VAL [\old(a)=4294967320, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, x={3:0}, x.d=4294967299] [L53] return r; VAL [\old(a)=4294967320, \result=4294967321, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, r=4294967321, x={3:0}] [L53] return r; VAL [\old(a)=4294967320, \result=4294967321, a=4294967320, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=15, r=4294967321] [L63] RET, EXPR sqrt_custom(x) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=4294967321, x=4294967320] [L63] y = sqrt_custom(x) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, sqrt_custom(x)=4294967321, x=4294967320, y=4294967321] [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L14] CALL reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L3] __assert_fail("0", "sqrt_poly2.c", 3, "reach_error") VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 84 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=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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...