/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:43:45,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:43:45,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:43:45,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:43:45,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:43:45,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:43:45,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:43:45,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:43:45,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:43:45,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:43:45,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:43:45,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:43:45,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:43:45,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:43:45,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:43:45,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:43:45,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:43:45,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:43:45,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:43:45,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:43:45,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:43:45,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:43:45,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:43:45,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:43:45,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:43:45,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:43:45,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:43:45,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:43:45,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:43:45,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:43:45,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:43:45,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:43:45,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:43:45,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:43:45,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:43:45,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:43:45,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:43:45,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:43:45,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:43:45,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:43:45,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:43:45,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:43:45,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:43:45,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:43:45,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:43:45,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:43:45,369 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:43:45,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:43:45,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:43:45,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:43:45,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:43:45,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:43:45,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:43:45,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:43:45,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:43:45,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:43:45,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:43:45,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:43:45,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:43:45,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:43:45,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:43:45,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:43:45,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:43:45,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:43:45,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:43:45,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:43:45,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:43:45,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:43:45,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:43:45,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:43:45,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:43:45,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:43:45,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:43:45,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:43:45,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:43:45,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:43:45,913 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:43:45,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 23:43:45,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8251b89be/e1ac616d2c1d4dcf98f61f2c8d19f11f/FLAGd088b35b1 [2020-09-24 23:43:46,526 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:43:46,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 23:43:46,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8251b89be/e1ac616d2c1d4dcf98f61f2c8d19f11f/FLAGd088b35b1 [2020-09-24 23:43:46,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8251b89be/e1ac616d2c1d4dcf98f61f2c8d19f11f [2020-09-24 23:43:46,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:43:46,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:43:46,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:43:46,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:43:46,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:43:46,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:43:46" (1/1) ... [2020-09-24 23:43:46,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:46, skipping insertion in model container [2020-09-24 23:43:46,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:43:46" (1/1) ... [2020-09-24 23:43:46,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:43:46,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:43:47,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:43:47,235 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:43:47,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:43:47,375 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:43:47,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47 WrapperNode [2020-09-24 23:43:47,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:43:47,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:43:47,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:43:47,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:43:47,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... [2020-09-24 23:43:47,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:43:47,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:43:47,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:43:47,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:43:47,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 23:43:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:43:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:43:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 23:43:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 23:43:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-09-24 23:43:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:43:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:43:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 23:43:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 23:43:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 23:43:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 23:43:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-09-24 23:43:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:43:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:43:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:43:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:43:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:43:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:43:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:43:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:43:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:43:47,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:43:47,913 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:43:47,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:43:47 BoogieIcfgContainer [2020-09-24 23:43:47,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:43:47,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:43:47,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:43:47,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:43:47,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:43:46" (1/3) ... [2020-09-24 23:43:47,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:43:47, skipping insertion in model container [2020-09-24 23:43:47,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:43:47" (2/3) ... [2020-09-24 23:43:47,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:43:47, skipping insertion in model container [2020-09-24 23:43:47,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:43:47" (3/3) ... [2020-09-24 23:43:47,927 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-09-24 23:43:47,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:43:47,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:43:47,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:43:47,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:43:47,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:43:47,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:43:47,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:43:47,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:43:47,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:43:47,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:43:47,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:43:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 23:43:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 23:43:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:43:48,028 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] [2020-09-24 23:43:48,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:43:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:43:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-09-24 23:43:48,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:43:48,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759436948] [2020-09-24 23:43:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:43:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:43:48,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:43:48,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:43:48,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:43:48,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:43:48 BoogieIcfgContainer [2020-09-24 23:43:48,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:43:48,342 INFO L168 Benchmark]: Toolchain (without parser) took 1490.41 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.7 MB in the beginning and 141.2 MB in the end (delta: -36.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,343 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.40 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.0 MB in the beginning and 181.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,345 INFO L168 Benchmark]: Boogie Preprocessor took 65.29 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,346 INFO L168 Benchmark]: RCFGBuilder took 476.07 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 157.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,347 INFO L168 Benchmark]: TraceAbstraction took 419.00 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 141.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:43:48,351 INFO L336 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 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 521.40 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 104.0 MB in the beginning and 181.8 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.29 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.07 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 157.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 419.00 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 141.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 36, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 63. Possible FailurePath: [L15] double C0 = 1.414213538; [L16] double C1 = 0.229761391; [L17] double C2 = 1.296735525; [L18] double C3 = -0.901098370; [L19] double C4 = 0.493553400; [L20] double C5 = -0.118958666; [L56] double x,y; [L58] x = __VERIFIER_nondet_double() [L59] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L10] COND FALSE !(!cond) [L59] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L61] CALL, EXPR sqrt_custom(x) [L29] union u x; [L30] double r; [L31] int exp; [L33] x.d = a [L35] EXPR x.i[0] [L35] exp = (x.i[0] & 0x7FF00000) >> 20 [L36] EXPR x.i[0] [L36] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L37] EXPR x.d [L37] r = x.d * 0.5 [L39] r = C1+C2+(C3+(C4+C5*r)*r)*r [L41] COND FALSE !(exp % 2 == 0) [L45] r = r * C0 [L48] x.i[0] = (exp/2 + 511) << 20 [L49] EXPR x.d [L49] r = r * x.d [L51] return r; [L51] return r; [L61] RET, EXPR sqrt_custom(x) [L61] y = sqrt_custom(x) [L63] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L12] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=75occurred 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, 63 NumberOfCodeBlocks, 63 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...