/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:15,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:15,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:15,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:15,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:15,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:15,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:15,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:15,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:15,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:15,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:15,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:15,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:15,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:15,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:15,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:15,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:15,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:15,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:15,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:15,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:15,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:15,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:15,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:15,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:15,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:15,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:15,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:15,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:15,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:15,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:15,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:15,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:15,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:15,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:15,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:15,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:15,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:15,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:15,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:15,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:15,558 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 [2020-10-13 10:20:15,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:15,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:15,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:15,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:15,580 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:15,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:15,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:15,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:15,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:15,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:15,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:15,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:15,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:15,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:15,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:15,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:15,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:15,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:15,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:15,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:15,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:15,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:15,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:15,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:15,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:15,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:15,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:15,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:15,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:15,585 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:15,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:15,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:15,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:15,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:15,921 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:15,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-13 10:20:15,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad8f2ffa8/fc5dfd8bb32e44c5887977f15ff25558/FLAG5a73dbe05 [2020-10-13 10:20:16,465 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:16,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-13 10:20:16,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad8f2ffa8/fc5dfd8bb32e44c5887977f15ff25558/FLAG5a73dbe05 [2020-10-13 10:20:16,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad8f2ffa8/fc5dfd8bb32e44c5887977f15ff25558 [2020-10-13 10:20:16,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:16,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:16,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:16,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:16,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:16,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:16" (1/1) ... [2020-10-13 10:20:16,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:16, skipping insertion in model container [2020-10-13 10:20:16,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:16" (1/1) ... [2020-10-13 10:20:16,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:16,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:17,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:17,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:17,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:17,120 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:17,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17 WrapperNode [2020-10-13 10:20:17,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:17,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:17,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:17,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:17,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (1/1) ... [2020-10-13 10:20:17,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:17,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:17,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:17,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:17,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (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 [2020-10-13 10:20:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-13 10:20:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:20:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:20:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:17,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:17,637 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:20:17,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:17 BoogieIcfgContainer [2020-10-13 10:20:17,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:17,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:17,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:17,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:17,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:16" (1/3) ... [2020-10-13 10:20:17,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f244a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:17, skipping insertion in model container [2020-10-13 10:20:17,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:17" (2/3) ... [2020-10-13 10:20:17,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f244a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:17, skipping insertion in model container [2020-10-13 10:20:17,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:17" (3/3) ... [2020-10-13 10:20:17,651 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-10-13 10:20:17,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:17,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:17,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:17,709 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:17,709 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:17,709 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:17,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:17,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:17,710 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:17,710 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:17,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-13 10:20:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:20:17,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:17,740 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] [2020-10-13 10:20:17,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:17,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1088803944, now seen corresponding path program 1 times [2020-10-13 10:20:17,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:17,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799105846] [2020-10-13 10:20:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:20:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 10:20:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:20:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:18,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:20:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:18,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:18,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:18,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:20:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:18,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:18,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:20:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:20:18,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:20:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:20:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:20:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:18,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799105846] [2020-10-13 10:20:18,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:18,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:18,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581882789] [2020-10-13 10:20:18,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:18,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:18,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:18,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:18,207 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-13 10:20:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:18,408 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2020-10-13 10:20:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:20:18,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 10:20:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:18,421 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:20:18,421 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 10:20:18,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 10:20:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-13 10:20:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 10:20:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-13 10:20:18,465 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-10-13 10:20:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:18,465 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-13 10:20:18,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-13 10:20:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:20:18,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:18,467 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] [2020-10-13 10:20:18,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:18,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:18,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1824817680, now seen corresponding path program 1 times [2020-10-13 10:20:18,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:18,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843539791] [2020-10-13 10:20:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:18,512 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:18,512 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:18,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:18,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:18 BoogieIcfgContainer [2020-10-13 10:20:18,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:18,539 INFO L168 Benchmark]: Toolchain (without parser) took 1700.31 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 104.7 MB in the end (delta: -1.4 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:18,542 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:18,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.61 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:18,545 INFO L168 Benchmark]: Boogie Preprocessor took 138.43 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:18,546 INFO L168 Benchmark]: RCFGBuilder took 381.78 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 161.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:18,549 INFO L168 Benchmark]: TraceAbstraction took 892.93 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 104.7 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:18,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.61 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.43 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.78 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 161.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 892.93 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 104.7 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 66, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L66] float x = 0.0f / 0.0f; [L68] CALL, EXPR ceil_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND FALSE !(!((ix) < 0x7f800000L)) [L46] return x; [L68] RET, EXPR ceil_float(x) [L68] float res = ceil_float(x); [L71] CALL, EXPR isnan_float(res) [L57] return x != x; [L71] RET, EXPR isnan_float(res) [L71] COND TRUE !isnan_float(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 38 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...