/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:52,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:52,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:52,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:52,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:52,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:52,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:52,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:52,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:52,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:52,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:52,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:52,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:52,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:52,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:52,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:52,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:52,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:52,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:52,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:52,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:52,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:52,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:52,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:52,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:52,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:52,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:52,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:52,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:52,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:52,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:52,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:52,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:52,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:52,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:52,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:52,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:52,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:52,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:52,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:52,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:52,773 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 [2020-10-28 14:27:52,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:52,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:52,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:52,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:52,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:52,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:52,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:52,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:52,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:52,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:52,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:52,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:52,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:52,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:52,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:52,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:52,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:52,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:52,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:52,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:52,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:52,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:52,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:52,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:52,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:52,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:52,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:52,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:52,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:52,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:53,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:53,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:53,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:53,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:53,307 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:53,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-28 14:27:53,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388552a50/8daf62c7974145209deb310e707ae089/FLAG4ddaf9f8f [2020-10-28 14:27:54,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:54,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-28 14:27:54,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388552a50/8daf62c7974145209deb310e707ae089/FLAG4ddaf9f8f [2020-10-28 14:27:54,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/388552a50/8daf62c7974145209deb310e707ae089 [2020-10-28 14:27:54,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:54,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:54,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:54,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:54,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:54,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402812eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54, skipping insertion in model container [2020-10-28 14:27:54,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:54,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:54,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:54,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:54,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:54,762 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:54,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54 WrapperNode [2020-10-28 14:27:54,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:54,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:54,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:54,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:54,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (1/1) ... [2020-10-28 14:27:54,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:54,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:54,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:54,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:54,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (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 [2020-10-28 14:27:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:27:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:27:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-28 14:27:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-28 14:27:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:27:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:55,780 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:55,781 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:27:55,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:55 BoogieIcfgContainer [2020-10-28 14:27:55,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:55,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:55,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:55,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:55,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:54" (1/3) ... [2020-10-28 14:27:55,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57943122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:55, skipping insertion in model container [2020-10-28 14:27:55,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:54" (2/3) ... [2020-10-28 14:27:55,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57943122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:55, skipping insertion in model container [2020-10-28 14:27:55,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:55" (3/3) ... [2020-10-28 14:27:55,793 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0662a.c [2020-10-28 14:27:55,806 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:55,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:55,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:55,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:55,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:55,861 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:55,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:55,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:55,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:55,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:55,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-28 14:27:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:27:55,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:55,892 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] [2020-10-28 14:27:55,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-28 14:27:55,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:55,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70293242] [2020-10-28 14:27:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:27:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-28 14:27:56,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:56,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:27:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:27:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:27:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:56,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 14:27:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:56,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:27:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:27:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:56,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70293242] [2020-10-28 14:27:56,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:56,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:56,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171943927] [2020-10-28 14:27:56,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:56,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:56,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:56,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:56,743 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-28 14:27:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:57,227 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-28 14:27:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:57,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:27:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:57,240 INFO L225 Difference]: With dead ends: 201 [2020-10-28 14:27:57,241 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 14:27:57,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 14:27:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-28 14:27:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 14:27:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-28 14:27:57,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-28 14:27:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:57,305 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-28 14:27:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-28 14:27:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:27:57,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:57,307 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] [2020-10-28 14:27:57,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:57,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:57,309 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-28 14:27:57,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:57,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097499718] [2020-10-28 14:27:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:57,369 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:57,369 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:57,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:57 BoogieIcfgContainer [2020-10-28 14:27:57,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:57,402 INFO L168 Benchmark]: Toolchain (without parser) took 3001.14 ms. Allocated memory was 125.8 MB in the beginning and 170.9 MB in the end (delta: 45.1 MB). Free memory was 100.8 MB in the beginning and 115.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:57,407 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:57,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.13 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 86.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:57,409 INFO L168 Benchmark]: Boogie Preprocessor took 74.91 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 83.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:57,410 INFO L168 Benchmark]: RCFGBuilder took 937.57 ms. Allocated memory was 125.8 MB in the beginning and 170.9 MB in the end (delta: 45.1 MB). Free memory was 83.4 MB in the beginning and 123.4 MB in the end (delta: -39.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:57,411 INFO L168 Benchmark]: TraceAbstraction took 1612.30 ms. Allocated memory is still 170.9 MB. Free memory was 123.2 MB in the beginning and 115.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:57,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.13 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 86.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.91 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 83.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 937.57 ms. Allocated memory was 125.8 MB in the beginning and 170.9 MB in the end (delta: 45.1 MB). Free memory was 83.4 MB in the beginning and 123.4 MB in the end (delta: -39.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1612.30 ms. Allocated memory is still 170.9 MB. Free memory was 123.2 MB in the beginning and 115.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 229, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 218, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L218] float x = -0.0f; [L219] float y = __VERIFIER_nondet_float(); [L226] COND TRUE y < 0.0f [L227] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L227] RET, EXPR __ieee754_atan2f(y, x) [L227] float res = __ieee754_atan2f(y, x); [L229] COND TRUE res != -pi_o_2 [L230] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0662a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 18 SDslu, 123 SDs, 0 SdLazy, 135 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...