/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0832b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:28,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:28,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:28,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:28,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:28,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:28,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:28,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:28,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:28,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:28,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:28,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:28,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:28,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:28,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:28,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:28,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:28,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:28,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:28,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:28,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:28,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:28,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:28,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:28,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:28,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:28,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:28,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:28,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:28,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:28,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:28,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:28,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:28,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:28,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:28,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:28,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:28,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:28,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:28,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:28,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:28,865 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 [2020-10-29 09:08:28,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:28,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:28,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:28,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:28,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:28,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:28,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:28,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:28,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:28,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:28,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:28,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:28,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:28,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:28,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:28,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:28,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:28,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:28,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:28,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:28,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:28,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:28,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:28,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:28,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:28,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:28,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:28,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:28,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:28,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:29,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:29,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:29,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:29,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:29,350 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:29,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832b.c [2020-10-29 09:08:29,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f920b4468/87e6cd65ad29452098591291047b4109/FLAG5cda6b4da [2020-10-29 09:08:30,164 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:30,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0832b.c [2020-10-29 09:08:30,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f920b4468/87e6cd65ad29452098591291047b4109/FLAG5cda6b4da [2020-10-29 09:08:30,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f920b4468/87e6cd65ad29452098591291047b4109 [2020-10-29 09:08:30,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:30,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:30,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:30,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:30,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:30,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770f2c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30, skipping insertion in model container [2020-10-29 09:08:30,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:30,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:30,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:30,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:30,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:30,856 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:30,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30 WrapperNode [2020-10-29 09:08:30,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:30,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:30,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:30,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:30,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (1/1) ... [2020-10-29 09:08:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:30,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:30,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:30,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:30,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (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 [2020-10-29 09:08:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:08:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_expf [2020-10-29 09:08:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:31,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:08:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_expf [2020-10-29 09:08:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:31,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:31,680 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-29 09:08:31,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:31 BoogieIcfgContainer [2020-10-29 09:08:31,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:31,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:31,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:31,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:30" (1/3) ... [2020-10-29 09:08:31,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f25b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:31, skipping insertion in model container [2020-10-29 09:08:31,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:30" (2/3) ... [2020-10-29 09:08:31,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f25b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:31, skipping insertion in model container [2020-10-29 09:08:31,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:31" (3/3) ... [2020-10-29 09:08:31,693 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2020-10-29 09:08:31,708 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:31,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:31,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:31,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:31,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:31,759 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:31,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:31,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:31,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:31,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:31,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-29 09:08:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:08:31,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:31,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:31,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:31,794 INFO L82 PathProgramCache]: Analyzing trace with hash 886815608, now seen corresponding path program 1 times [2020-10-29 09:08:31,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:31,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616272553] [2020-10-29 09:08:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:32,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:08:32,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 09:08:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:32,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:32,488 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 09:08:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:08:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:32,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:32,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:32,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:08:32,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:08:32,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:32,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:32,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616272553] [2020-10-29 09:08:32,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:32,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:32,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104780737] [2020-10-29 09:08:32,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:32,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:32,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:32,608 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-10-29 09:08:32,758 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 09:08:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:33,054 INFO L93 Difference]: Finished difference Result 87 states and 130 transitions. [2020-10-29 09:08:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:33,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 09:08:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:33,082 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:08:33,082 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:08:33,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:08:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:08:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:08:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-29 09:08:33,158 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 17 [2020-10-29 09:08:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:33,159 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-29 09:08:33,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-29 09:08:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:08:33,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:33,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:33,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:33,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash -769349610, now seen corresponding path program 1 times [2020-10-29 09:08:33,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:33,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397138983] [2020-10-29 09:08:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:33,270 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:33,271 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:33,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:33,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:33 BoogieIcfgContainer [2020-10-29 09:08:33,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:33,297 INFO L168 Benchmark]: Toolchain (without parser) took 2806.55 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 117.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:33,298 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 154.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:33,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.01 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 116.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:33,300 INFO L168 Benchmark]: Boogie Preprocessor took 82.40 ms. Allocated memory is still 154.1 MB. Free memory was 116.8 MB in the beginning and 114.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:33,301 INFO L168 Benchmark]: RCFGBuilder took 737.22 ms. Allocated memory is still 154.1 MB. Free memory was 114.7 MB in the beginning and 122.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:33,302 INFO L168 Benchmark]: TraceAbstraction took 1611.68 ms. Allocated memory is still 154.1 MB. Free memory was 122.6 MB in the beginning and 117.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:33,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 154.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.01 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 116.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.40 ms. Allocated memory is still 154.1 MB. Free memory was 116.8 MB in the beginning and 114.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 737.22 ms. Allocated memory is still 154.1 MB. Free memory was 114.7 MB in the beginning and 122.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1611.68 ms. Allocated memory is still 154.1 MB. Free memory was 122.6 MB in the beginning and 117.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = -0.0f; [L120] CALL, EXPR __ieee754_expf(x) [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; [L120] RET, EXPR __ieee754_expf(x) [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f [L124] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0832b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 6 SDslu, 44 SDs, 0 SdLazy, 56 SolverSat, 6 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 0.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 1648 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...