/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=DEEPEST --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_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:02,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:02,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:02,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:02,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:02,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:02,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:02,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:02,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:02,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:02,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:02,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:02,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:02,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:02,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:02,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:02,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:02,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:02,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:02,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:02,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:02,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:02,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:02,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:02,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:02,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:02,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:02,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:02,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:02,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:02,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:02,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:02,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:02,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:02,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:02,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:02,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:02,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:02,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:02,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:02,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:02,865 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 [2020-10-27 19:44:02,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:02,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:02,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:02,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:02,929 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:02,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:02,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:02,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:02,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:02,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:02,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:02,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:02,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:02,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:02,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:02,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:02,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:02,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:02,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:02,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:02,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:02,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:02,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:02,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:02,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:02,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:02,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:02,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:02,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:02,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:03,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:03,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:03,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:03,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:03,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:03,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-27 19:44:03,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2072b4aa8/e62f4daadba2442bb6664a7a298d7e60/FLAGced1f6065 [2020-10-27 19:44:04,185 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:04,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-27 19:44:04,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2072b4aa8/e62f4daadba2442bb6664a7a298d7e60/FLAGced1f6065 [2020-10-27 19:44:04,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2072b4aa8/e62f4daadba2442bb6664a7a298d7e60 [2020-10-27 19:44:04,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:04,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:04,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:04,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:04,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:04,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb6c4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04, skipping insertion in model container [2020-10-27 19:44:04,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:04,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:04,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:04,802 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:04,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:04,871 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:04,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04 WrapperNode [2020-10-27 19:44:04,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:04,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:04,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:04,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:04,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (1/1) ... [2020-10-27 19:44:04,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:04,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:04,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:04,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:04,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (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 [2020-10-27 19:44:05,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:05,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:05,028 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:05,028 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 19:44:05,028 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 19:44:05,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 19:44:05,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 19:44:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 19:44:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:05,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:05,821 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 19:44:05,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:05 BoogieIcfgContainer [2020-10-27 19:44:05,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:05,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:05,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:05,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:05,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:04" (1/3) ... [2020-10-27 19:44:05,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fc0335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:05, skipping insertion in model container [2020-10-27 19:44:05,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:04" (2/3) ... [2020-10-27 19:44:05,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fc0335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:05, skipping insertion in model container [2020-10-27 19:44:05,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:05" (3/3) ... [2020-10-27 19:44:05,837 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-27 19:44:05,854 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:05,860 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:05,874 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:05,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:05,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:05,919 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:05,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:05,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:05,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:05,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:05,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-27 19:44:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 19:44:05,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:05,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:44:05,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash -75419188, now seen corresponding path program 1 times [2020-10-27 19:44:05,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:05,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884327810] [2020-10-27 19:44:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:06,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:44:06,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 19:44:06,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:44:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:06,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:44:06,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:44:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:06,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:06,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:44:06,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:44:06,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:44:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:44:06,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884327810] [2020-10-27 19:44:06,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:06,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:06,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108286578] [2020-10-27 19:44:06,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:06,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:06,684 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-27 19:44:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:07,006 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2020-10-27 19:44:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:07,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 19:44:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:07,017 INFO L225 Difference]: With dead ends: 105 [2020-10-27 19:44:07,018 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 19:44:07,021 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 [2020-10-27 19:44:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 19:44:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-27 19:44:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 19:44:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-27 19:44:07,069 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2020-10-27 19:44:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:07,070 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-27 19:44:07,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-27 19:44:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:44:07,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:07,071 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] [2020-10-27 19:44:07,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:07,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 960537085, now seen corresponding path program 1 times [2020-10-27 19:44:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112462757] [2020-10-27 19:44:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:07,122 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:07,123 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:07,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:07,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:07 BoogieIcfgContainer [2020-10-27 19:44:07,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:07,155 INFO L168 Benchmark]: Toolchain (without parser) took 2636.26 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 115.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:07,156 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:07,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.91 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 116.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:07,159 INFO L168 Benchmark]: Boogie Preprocessor took 64.49 ms. Allocated memory is still 154.1 MB. Free memory was 116.6 MB in the beginning and 114.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:07,160 INFO L168 Benchmark]: RCFGBuilder took 884.36 ms. Allocated memory is still 154.1 MB. Free memory was 114.3 MB in the beginning and 122.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:07,162 INFO L168 Benchmark]: TraceAbstraction took 1323.95 ms. Allocated memory is still 154.1 MB. Free memory was 122.0 MB in the beginning and 115.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:07,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.91 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 116.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.49 ms. Allocated memory is still 154.1 MB. Free memory was 116.6 MB in the beginning and 114.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 884.36 ms. Allocated memory is still 154.1 MB. Free memory was 114.3 MB in the beginning and 122.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1323.95 ms. Allocated memory is still 154.1 MB. Free memory was 122.0 MB in the beginning and 115.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] 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, }; [L51-L53] 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; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 60 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=58occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1728 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...