/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_0663a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:16,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:16,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:16,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:16,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:16,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:16,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:16,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:16,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:16,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:16,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:16,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:16,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:16,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:16,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:16,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:16,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:16,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:16,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:16,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:16,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:16,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:16,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:16,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:16,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:16,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:16,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:16,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:16,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:16,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:16,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:16,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:16,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:16,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:16,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:16,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:16,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:16,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:16,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:16,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:16,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:16,942 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 01:03:16,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:16,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:16,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:16,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:16,997 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:16,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:16,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:16,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:16,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:16,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:17,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:17,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:17,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:17,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:17,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:17,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:17,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:17,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:17,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:17,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:17,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:17,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:17,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:17,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:17,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:17,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:17,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:17,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:17,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:17,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:17,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:17,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:17,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:17,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:17,482 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:17,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2020-10-27 01:03:17,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e50f5532/5e7357aa5f2b4963907c25aa7f53e708/FLAGe717ae7b0 [2020-10-27 01:03:18,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:18,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0663a.c [2020-10-27 01:03:18,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e50f5532/5e7357aa5f2b4963907c25aa7f53e708/FLAGe717ae7b0 [2020-10-27 01:03:18,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e50f5532/5e7357aa5f2b4963907c25aa7f53e708 [2020-10-27 01:03:18,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:18,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:18,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:18,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:18,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:18,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 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 01:03:18,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:18,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:18,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:18,721 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:18,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:18,855 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:18,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18 WrapperNode [2020-10-27 01:03:18,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:18,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:18,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:18,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:18,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (1/1) ... [2020-10-27 01:03:18,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:18,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:18,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:18,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:18,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (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 01:03:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:19,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:03:19,010 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 01:03:19,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 01:03:19,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 01:03:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:03:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:19,882 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:19,883 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:03:19,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:19 BoogieIcfgContainer [2020-10-27 01:03:19,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:19,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:19,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:19,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:19,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:18" (1/3) ... [2020-10-27 01:03:19,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133aabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:19, skipping insertion in model container [2020-10-27 01:03:19,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:18" (2/3) ... [2020-10-27 01:03:19,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133aabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:19, skipping insertion in model container [2020-10-27 01:03:19,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:19" (3/3) ... [2020-10-27 01:03:19,897 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0663a.c [2020-10-27 01:03:19,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:19,916 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:19,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:19,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:19,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:19,976 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:19,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:19,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:19,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:19,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:19,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-27 01:03:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:03:20,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:20,015 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 01:03:20,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-27 01:03:20,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:20,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338341565] [2020-10-27 01:03:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:03:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 01:03:20,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:03:20,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:03:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:03:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:03:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:03:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:20,800 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 01:03:20,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338341565] [2020-10-27 01:03:20,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:20,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816637067] [2020-10-27 01:03:20,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:20,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:20,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:20,844 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-27 01:03:21,099 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:03:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:21,435 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-27 01:03:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:21,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:03:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:21,447 INFO L225 Difference]: With dead ends: 201 [2020-10-27 01:03:21,448 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 01:03:21,452 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 [2020-10-27 01:03:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 01:03:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-27 01:03:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 01:03:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-27 01:03:21,506 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-27 01:03:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:21,507 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-27 01:03:21,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-27 01:03:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:03:21,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:21,509 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 01:03:21,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:21,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-27 01:03:21,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:21,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715399343] [2020-10-27 01:03:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:21,570 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:21,570 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:21,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:21,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:21 BoogieIcfgContainer [2020-10-27 01:03:21,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:21,594 INFO L168 Benchmark]: Toolchain (without parser) took 3219.32 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.6 MB in the beginning and 95.7 MB in the end (delta: 32.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,595 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 153.1 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 104.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:21,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.50 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 113.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,597 INFO L168 Benchmark]: Boogie Preprocessor took 70.37 ms. Allocated memory is still 153.1 MB. Free memory was 113.7 MB in the beginning and 111.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,598 INFO L168 Benchmark]: RCFGBuilder took 957.95 ms. Allocated memory is still 153.1 MB. Free memory was 110.8 MB in the beginning and 107.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,599 INFO L168 Benchmark]: TraceAbstraction took 1703.25 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 107.8 MB in the beginning and 95.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:21,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 153.1 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 104.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 472.50 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 113.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.37 ms. Allocated memory is still 153.1 MB. Free memory was 113.7 MB in the beginning and 111.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 957.95 ms. Allocated memory is still 153.1 MB. Free memory was 110.8 MB in the beginning and 107.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1703.25 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 107.8 MB in the beginning and 95.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 43.0 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 230, 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); [L230] COND TRUE res != pi_o_2 [L231] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0663a.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: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...