/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 0.2.0-7d8eed3 [2020-11-07 00:23:31,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:23:31,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:23:32,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:23:32,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:23:32,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:23:32,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:23:32,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:23:32,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:23:32,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:23:32,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:23:32,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:23:32,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:23:32,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:23:32,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:23:32,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:23:32,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:23:32,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:23:32,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:23:32,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:23:32,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:23:32,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:23:32,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:23:32,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:23:32,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:23:32,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:23:32,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:23:32,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:23:32,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:23:32,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:23:32,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:23:32,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:23:32,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:23:32,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:23:32,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:23:32,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:23:32,092 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 00:23:32,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:23:32,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:23:32,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:23:32,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:23:32,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:23:32,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:23:32,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:23:32,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:23:32,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:23:32,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:23:32,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:23:32,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:23:32,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:23:32,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:23:32,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:23:32,113 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:23:32,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:23:32,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:23:32,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:23:32,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:23:32,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:23:32,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:23:32,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:23:32,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:23:32,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:23:32,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:23:32,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:23:32,506 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:23:32,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-11-07 00:23:32,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6aba952/727dae803d294c99a5e8f431a1561713/FLAG5b5d9f3e7 [2020-11-07 00:23:33,270 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:23:33,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-11-07 00:23:33,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6aba952/727dae803d294c99a5e8f431a1561713/FLAG5b5d9f3e7 [2020-11-07 00:23:33,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6aba952/727dae803d294c99a5e8f431a1561713 [2020-11-07 00:23:33,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:23:33,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:23:33,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:33,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:23:33,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:23:33,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b504e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33, skipping insertion in model container [2020-11-07 00:23:33,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:23:33,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:23:33,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:33,851 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:23:33,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:33,915 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:23:33,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33 WrapperNode [2020-11-07 00:23:33,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:33,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:23:33,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:23:33,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:23:33,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:33,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (1/1) ... [2020-11-07 00:23:34,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:23:34,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:23:34,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:23:34,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:23:34,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (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 00:23:34,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:23:34,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:23:34,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:23:34,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 00:23:34,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 00:23:34,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-11-07 00:23:34,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:23:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:23:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:23:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:23:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:23:34,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 00:23:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 00:23:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 00:23:34,110 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-11-07 00:23:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:23:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:23:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:23:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:23:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:23:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:23:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:23:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:23:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:23:34,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:23:34,934 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:23:34,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:34 BoogieIcfgContainer [2020-11-07 00:23:34,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:23:34,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:23:34,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:23:34,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:23:34,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:23:33" (1/3) ... [2020-11-07 00:23:34,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e2ea41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:34, skipping insertion in model container [2020-11-07 00:23:34,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:33" (2/3) ... [2020-11-07 00:23:34,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e2ea41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:34, skipping insertion in model container [2020-11-07 00:23:34,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:34" (3/3) ... [2020-11-07 00:23:34,945 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-11-07 00:23:34,960 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:23:34,966 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:23:34,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:23:35,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:23:35,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:23:35,004 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:23:35,004 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:23:35,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:23:35,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:23:35,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:23:35,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:23:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-11-07 00:23:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 00:23:35,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:35,035 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 00:23:35,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:35,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:35,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1679496032, now seen corresponding path program 1 times [2020-11-07 00:23:35,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:35,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321954058] [2020-11-07 00:23:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:35,130 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:35,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:35,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:35,503 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:23:35,504 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:23:35,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:23:35,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:23:35 BoogieIcfgContainer [2020-11-07 00:23:35,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:23:35,537 INFO L168 Benchmark]: Toolchain (without parser) took 1923.86 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 105.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:35,538 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:23:35,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:35,545 INFO L168 Benchmark]: Boogie Preprocessor took 85.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:35,546 INFO L168 Benchmark]: RCFGBuilder took 931.14 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 126.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:35,547 INFO L168 Benchmark]: TraceAbstraction took 594.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 105.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:35,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.59 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 931.14 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 126.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 594.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 105.9 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: 0.5s, 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...