/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:36,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:36,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:36,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:36,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:36,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:36,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:36,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:36,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:36,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:36,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:36,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:36,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:36,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:36,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:36,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:36,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:36,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:36,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:36,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:36,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:36,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:36,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:36,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:36,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:36,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:36,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:36,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:36,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:36,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:36,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:36,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:36,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:36,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:36,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:36,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:36,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:36,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:36,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:36,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:36,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:36,080 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 [2020-10-13 10:19:36,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:36,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:36,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:36,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:36,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:36,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:36,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:36,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:36,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:36,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:36,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:36,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:36,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:36,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:36,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:36,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:36,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:36,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:36,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:36,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:36,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:36,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:36,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:36,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:36,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:36,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:36,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:36,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:36,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:36,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:36,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-13 10:19:36,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db1ae52a/eb090d75f1b04df5a817200dd52a084c/FLAG7a4152c1f [2020-10-13 10:19:36,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:36,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-13 10:19:36,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db1ae52a/eb090d75f1b04df5a817200dd52a084c/FLAG7a4152c1f [2020-10-13 10:19:37,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7db1ae52a/eb090d75f1b04df5a817200dd52a084c [2020-10-13 10:19:37,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:37,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:37,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:37,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:37,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:37,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d6227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37, skipping insertion in model container [2020-10-13 10:19:37,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:37,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:37,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:37,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:37,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:37,846 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:37,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37 WrapperNode [2020-10-13 10:19:37,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:37,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:37,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:37,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:37,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (1/1) ... [2020-10-13 10:19:37,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:37,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:37,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:37,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:37,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (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 [2020-10-13 10:19:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-13 10:19:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-13 10:19:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-13 10:19:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-13 10:19:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:19:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:38,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:38,766 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-13 10:19:38,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:38 BoogieIcfgContainer [2020-10-13 10:19:38,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:38,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:38,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:38,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:38,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:37" (1/3) ... [2020-10-13 10:19:38,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b3425a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:38, skipping insertion in model container [2020-10-13 10:19:38,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:37" (2/3) ... [2020-10-13 10:19:38,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b3425a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:38, skipping insertion in model container [2020-10-13 10:19:38,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:38" (3/3) ... [2020-10-13 10:19:38,799 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0660a.c [2020-10-13 10:19:38,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:38,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:38,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:38,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:38,879 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:38,879 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:38,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:38,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:38,880 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:38,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:38,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-13 10:19:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:19:38,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:38,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:38,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1526168591, now seen corresponding path program 1 times [2020-10-13 10:19:38,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:38,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920596514] [2020-10-13 10:19:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:39,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:19:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 10:19:39,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:19:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:19:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:19:39,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:19:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:39,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:39,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:19:39,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:19:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:19:39,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:39,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920596514] [2020-10-13 10:19:39,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:39,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:39,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313735861] [2020-10-13 10:19:39,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:39,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:39,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:39,753 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-13 10:19:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:40,162 INFO L93 Difference]: Finished difference Result 196 states and 309 transitions. [2020-10-13 10:19:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:19:40,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:19:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:40,177 INFO L225 Difference]: With dead ends: 196 [2020-10-13 10:19:40,178 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 10:19:40,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 10:19:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-13 10:19:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 10:19:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-13 10:19:40,244 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-13 10:19:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:40,245 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-13 10:19:40,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-13 10:19:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:19:40,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:40,247 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] [2020-10-13 10:19:40,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:40,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1732400538, now seen corresponding path program 1 times [2020-10-13 10:19:40,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:40,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634830591] [2020-10-13 10:19:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:40,301 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:40,302 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:40,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:40,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:40 BoogieIcfgContainer [2020-10-13 10:19:40,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:40,333 INFO L168 Benchmark]: Toolchain (without parser) took 3007.34 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 103.1 MB in the beginning and 132.0 MB in the end (delta: -28.9 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,334 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.45 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 178.5 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,336 INFO L168 Benchmark]: Boogie Preprocessor took 74.93 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,337 INFO L168 Benchmark]: RCFGBuilder took 851.72 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 135.3 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,338 INFO L168 Benchmark]: TraceAbstraction took 1548.96 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 134.7 MB in the beginning and 132.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:40,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 521.45 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 178.5 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.93 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 851.72 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 135.3 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1548.96 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 134.7 MB in the beginning and 132.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 230]: 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 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 217, overapproximation of someBinaryArithmeticFLOAToperation at line 135. Possible FailurePath: [L27-L32] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L34-L39] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L41-L45] 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, }; [L47-L49] 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; [L115-L116] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L216] float x = __VERIFIER_nondet_float(); [L217] float y = -0.0f; [L224] COND TRUE x < 0.0f && y == -0.0f [L226] CALL, EXPR __ieee754_atan2f(y, x) [L119] float z; [L120] __int32_t k, m, hx, hy, ix, iy; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L129] ieee_float_shape_type gf_u; [L130] gf_u.value = (y) [L131] EXPR gf_u.word [L131] (hy) = gf_u.word [L133] iy = hy & 0x7fffffff [L134] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L135] return x + y; [L226] RET, EXPR __ieee754_atan2f(y, x) [L226] float res = __ieee754_atan2f(y, x); [L229] COND TRUE res != -pi [L230] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 16 SDslu, 124 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...