/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=SHALLOWEST --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 [2020-10-27 01:03:16,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:16,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:16,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:16,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:16,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:16,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:16,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:16,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:16,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:16,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:16,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:16,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:16,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:16,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:16,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:16,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:16,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:16,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:16,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:16,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:16,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:16,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:16,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:16,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:16,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:16,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:17,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:17,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:17,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:17,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:17,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:17,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:17,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:17,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:17,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:17,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:17,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:17,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:17,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:17,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:17,024 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 01:03:17,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:17,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:17,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:17,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:17,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:17,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:17,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:17,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:17,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:17,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:17,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:17,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:17,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:17,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:17,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:17,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:17,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:17,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:17,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:17,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:17,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:17,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:17,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:17,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:17,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:17,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:17,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:17,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:17,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:17,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:17,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:17,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:17,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:17,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:17,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:17,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-27 01:03:17,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48b4ccfc4/a4728abbb73c4ae781c63bd41d083ea8/FLAGd3dae35f3 [2020-10-27 01:03:18,463 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:18,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0662a.c [2020-10-27 01:03:18,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48b4ccfc4/a4728abbb73c4ae781c63bd41d083ea8/FLAGd3dae35f3 [2020-10-27 01:03:18,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48b4ccfc4/a4728abbb73c4ae781c63bd41d083ea8 [2020-10-27 01:03:18,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:18,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:18,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:18,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:18,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:18,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18, skipping insertion in model container [2020-10-27 01:03:18,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:18,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:19,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:19,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:19,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:19,183 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:19,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19 WrapperNode [2020-10-27 01:03:19,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:19,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:19,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:19,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:19,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (1/1) ... [2020-10-27 01:03:19,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:19,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:19,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:19,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:19,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (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 01:03:19,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:03:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 01:03:19,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 01:03:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 01:03:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 01:03:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:03:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:20,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:20,190 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:03:20,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:20 BoogieIcfgContainer [2020-10-27 01:03:20,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:20,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:20,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:20,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:20,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:18" (1/3) ... [2020-10-27 01:03:20,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d409011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:20, skipping insertion in model container [2020-10-27 01:03:20,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:19" (2/3) ... [2020-10-27 01:03:20,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d409011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:20, skipping insertion in model container [2020-10-27 01:03:20,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:20" (3/3) ... [2020-10-27 01:03:20,205 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0662a.c [2020-10-27 01:03:20,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:20,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:20,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:20,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:20,296 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:20,296 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:20,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:20,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:20,297 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:20,297 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:20,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-27 01:03:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:03:20,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:20,329 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 01:03:20,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-27 01:03:20,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:20,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957460546] [2020-10-27 01:03:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:20,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:03:20,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-27 01:03:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:03:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 01:03:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:21,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:21,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:21,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:03:21,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:03:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:03:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:03:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:21,198 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 01:03:21,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957460546] [2020-10-27 01:03:21,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:21,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:21,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226588740] [2020-10-27 01:03:21,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:21,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:21,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:21,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:21,225 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-27 01:03:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:21,712 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-27 01:03:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:21,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:03:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:21,726 INFO L225 Difference]: With dead ends: 201 [2020-10-27 01:03:21,727 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 01:03:21,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:21,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 01:03:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-27 01:03:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 01:03:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-27 01:03:21,792 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-27 01:03:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:21,792 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-27 01:03:21,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-27 01:03:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:03:21,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:21,794 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] [2020-10-27 01:03:21,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:21,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:21,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:21,795 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-27 01:03:21,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:21,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550380007] [2020-10-27 01:03:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:21,861 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:21,861 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:21,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:21 BoogieIcfgContainer [2020-10-27 01:03:21,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:21,890 INFO L168 Benchmark]: Toolchain (without parser) took 3135.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 59.5 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,891 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 114.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:21,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 111.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,893 INFO L168 Benchmark]: Boogie Preprocessor took 78.94 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 108.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,894 INFO L168 Benchmark]: RCFGBuilder took 929.25 ms. Allocated memory is still 151.0 MB. Free memory was 108.5 MB in the beginning and 105.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,894 INFO L168 Benchmark]: TraceAbstraction took 1689.67 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 59.5 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 114.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 420.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 111.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.94 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 108.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 929.25 ms. Allocated memory is still 151.0 MB. Free memory was 108.5 MB in the beginning and 105.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1689.67 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 59.5 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.5 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 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, 0.2s 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, 0.6s 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...