/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=DEEPEST --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 [2020-09-25 00:50:35,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:50:35,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:50:35,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:50:35,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:50:35,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:50:35,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:50:35,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:50:35,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:50:35,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:50:35,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:50:35,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:50:35,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:50:35,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:50:35,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:50:35,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:50:35,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:50:35,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:50:35,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:50:35,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:50:35,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:50:35,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:50:35,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:50:35,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:50:35,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:50:35,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:50:35,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:50:35,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:50:35,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:50:35,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:50:35,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:50:35,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:50:35,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:50:35,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:50:35,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:50:35,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:50:35,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:50:35,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:50:35,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:50:35,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:50:35,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:50:35,521 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 [2020-09-25 00:50:35,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:50:35,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:50:35,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:50:35,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:50:35,554 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:50:35,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:50:35,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:50:35,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:50:35,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:50:35,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:50:35,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:50:35,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:50:35,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:50:35,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:50:35,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:50:35,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:50:35,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:50:35,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:50:35,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:50:35,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:50:35,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:50:35,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:50:35,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:50:35,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:50:35,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:50:35,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:50:35,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:50:35,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:50:35,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:50:35,560 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:50:36,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:50:36,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:50:36,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:50:36,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:50:36,070 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:50:36,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-25 00:50:36,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9408d29e/ca0ed54449974323a7437d937ac54ee5/FLAG7fb801af0 [2020-09-25 00:50:36,738 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:50:36,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-25 00:50:36,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9408d29e/ca0ed54449974323a7437d937ac54ee5/FLAG7fb801af0 [2020-09-25 00:50:37,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9408d29e/ca0ed54449974323a7437d937ac54ee5 [2020-09-25 00:50:37,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:50:37,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:50:37,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:50:37,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:50:37,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:50:37,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76be6b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37, skipping insertion in model container [2020-09-25 00:50:37,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:50:37,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:50:37,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:50:37,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:50:37,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:50:37,520 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:50:37,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37 WrapperNode [2020-09-25 00:50:37,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:50:37,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:50:37,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:50:37,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:50:37,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (1/1) ... [2020-09-25 00:50:37,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:50:37,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:50:37,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:50:37,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:50:37,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (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 [2020-09-25 00:50:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:50:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:50:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:50:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:50:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-09-25 00:50:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:50:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:50:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 00:50:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:50:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:50:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:50:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-09-25 00:50:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:50:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 00:50:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:50:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:50:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 00:50:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:50:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:50:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:50:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:50:38,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:50:38,180 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:50:38,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:50:38 BoogieIcfgContainer [2020-09-25 00:50:38,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:50:38,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:50:38,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:50:38,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:50:38,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:50:37" (1/3) ... [2020-09-25 00:50:38,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b911e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:50:38, skipping insertion in model container [2020-09-25 00:50:38,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:50:37" (2/3) ... [2020-09-25 00:50:38,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b911e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:50:38, skipping insertion in model container [2020-09-25 00:50:38,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:50:38" (3/3) ... [2020-09-25 00:50:38,196 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-09-25 00:50:38,207 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:50:38,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:50:38,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:50:38,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:50:38,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:50:38,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:50:38,265 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:50:38,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:50:38,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:50:38,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:50:38,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:50:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-25 00:50:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:50:38,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:50:38,299 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] [2020-09-25 00:50:38,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:50:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:50:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-09-25 00:50:38,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:50:38,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375089482] [2020-09-25 00:50:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:50:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:50:38,578 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:50:38,579 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:50:38,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:50:38,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:50:38 BoogieIcfgContainer [2020-09-25 00:50:38,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:50:38,616 INFO L168 Benchmark]: Toolchain (without parser) took 1533.68 ms. Allocated memory was 107.5 MB in the beginning and 159.4 MB in the end (delta: 51.9 MB). Free memory was 72.8 MB in the beginning and 106.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,617 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 107.5 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.39 ms. Allocated memory was 107.5 MB in the beginning and 123.2 MB in the end (delta: 15.7 MB). Free memory was 72.1 MB in the beginning and 98.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,619 INFO L168 Benchmark]: Boogie Preprocessor took 120.99 ms. Allocated memory was 123.2 MB in the beginning and 159.4 MB in the end (delta: 36.2 MB). Free memory was 98.4 MB in the beginning and 144.2 MB in the end (delta: -45.8 MB). Peak memory consumption was 357.9 kB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,620 INFO L168 Benchmark]: RCFGBuilder took 543.52 ms. Allocated memory is still 159.4 MB. Free memory was 144.2 MB in the beginning and 123.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,621 INFO L168 Benchmark]: TraceAbstraction took 424.00 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 106.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:50:38,626 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 107.5 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 435.39 ms. Allocated memory was 107.5 MB in the beginning and 123.2 MB in the end (delta: 15.7 MB). Free memory was 72.1 MB in the beginning and 98.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.99 ms. Allocated memory was 123.2 MB in the beginning and 159.4 MB in the end (delta: 36.2 MB). Free memory was 98.4 MB in the beginning and 144.2 MB in the end (delta: -45.8 MB). Peak memory consumption was 357.9 kB. Max. memory is 7.1 GB. * RCFGBuilder took 543.52 ms. Allocated memory is still 159.4 MB. Free memory was 144.2 MB in the beginning and 123.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 424.00 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 106.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 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...