/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_0250a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:12,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:12,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:12,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:12,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:12,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:12,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:12,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:12,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:12,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:12,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:12,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:12,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:12,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:12,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:12,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:12,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:12,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:12,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:12,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:12,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:12,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:12,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:12,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:12,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:12,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:12,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:12,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:12,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:12,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:12,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:12,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:12,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:12,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:12,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:12,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:12,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:12,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:12,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:12,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:12,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:12,944 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 10:19:12,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:12,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:12,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:12,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:12,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:12,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:12,993 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:12,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:12,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:12,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:12,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:12,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:12,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:12,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:12,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:12,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:12,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:12,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:12,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:12,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:12,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:12,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:12,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:12,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:12,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:13,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:13,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:13,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:13,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:13,000 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 10:19:13,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:13,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:13,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:13,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:13,360 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:13,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-13 10:19:13,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/275c6f8a5/969728e9ae5c4dd4a4f8b343e0120072/FLAG4e5a7bede [2020-10-13 10:19:13,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:13,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-13 10:19:13,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/275c6f8a5/969728e9ae5c4dd4a4f8b343e0120072/FLAG4e5a7bede [2020-10-13 10:19:14,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/275c6f8a5/969728e9ae5c4dd4a4f8b343e0120072 [2020-10-13 10:19:14,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:14,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:14,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:14,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:14,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:14,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14, skipping insertion in model container [2020-10-13 10:19:14,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:14,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:14,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:14,703 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:14,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:14,866 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:14,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14 WrapperNode [2020-10-13 10:19:14,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:14,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:14,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:14,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:14,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:14,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:14,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:14,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:14,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (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 10:19:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-13 10:19:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:19:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-13 10:19:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-13 10:19:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-13 10:19:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:15,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:15,710 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:19:15,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:15 BoogieIcfgContainer [2020-10-13 10:19:15,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:15,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:15,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:15,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:15,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:14" (1/3) ... [2020-10-13 10:19:15,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b586eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:15, skipping insertion in model container [2020-10-13 10:19:15,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14" (2/3) ... [2020-10-13 10:19:15,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b586eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:15, skipping insertion in model container [2020-10-13 10:19:15,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:15" (3/3) ... [2020-10-13 10:19:15,726 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0250a.c [2020-10-13 10:19:15,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:15,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:15,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:15,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:15,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:15,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:15,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:15,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:15,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:15,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:15,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-13 10:19:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:19:15,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:15,815 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 10:19:15,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:15,822 INFO L82 PathProgramCache]: Analyzing trace with hash 999120398, now seen corresponding path program 1 times [2020-10-13 10:19:15,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:15,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415488106] [2020-10-13 10:19:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:19:16,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 10:19:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:19:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:19:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:16,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:19:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:19:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:19:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:19:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:19:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:16,383 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 10:19:16,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415488106] [2020-10-13 10:19:16,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:16,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:16,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284191183] [2020-10-13 10:19:16,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:16,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:16,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:16,412 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-10-13 10:19:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:16,878 INFO L93 Difference]: Finished difference Result 144 states and 214 transitions. [2020-10-13 10:19:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:16,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-13 10:19:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:16,892 INFO L225 Difference]: With dead ends: 144 [2020-10-13 10:19:16,893 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:19:16,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 10:19:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:19:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-13 10:19:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:19:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-10-13 10:19:16,956 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 21 [2020-10-13 10:19:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:16,957 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-10-13 10:19:16,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-10-13 10:19:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:19:16,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:16,959 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] [2020-10-13 10:19:16,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:16,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:16,960 INFO L82 PathProgramCache]: Analyzing trace with hash 952293865, now seen corresponding path program 1 times [2020-10-13 10:19:16,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:16,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719691638] [2020-10-13 10:19:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:17,008 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:17,009 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:17,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:17,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:17 BoogieIcfgContainer [2020-10-13 10:19:17,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:17,036 INFO L168 Benchmark]: Toolchain (without parser) took 2693.36 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.6 MB in the beginning and 141.2 MB in the end (delta: -38.6 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,037 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:19:17,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.35 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 176.4 MB in the end (delta: -74.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,039 INFO L168 Benchmark]: Boogie Preprocessor took 72.83 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,040 INFO L168 Benchmark]: RCFGBuilder took 770.42 ms. Allocated memory is still 201.3 MB. Free memory was 173.0 MB in the beginning and 134.9 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,041 INFO L168 Benchmark]: TraceAbstraction took 1316.75 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 134.2 MB in the beginning and 141.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 520.35 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 176.4 MB in the end (delta: -74.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.83 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 770.42 ms. Allocated memory is still 201.3 MB. Free memory was 173.0 MB in the beginning and 134.9 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1316.75 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 134.2 MB in the beginning and 141.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 233]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someUnaryDOUBLEoperation at line 147, overapproximation of bitwiseAnd at line 161, overapproximation of someUnaryFLOAToperation at line 145, overapproximation of someBinaryArithmeticFLOAToperation at line 164. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L60] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L143-L151] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L228] float x = 1.0f / 0.0f; [L229] CALL, EXPR __ieee754_asinf(x) [L154] float t, w, p, q, c, r, s; [L155] __int32_t hx, ix; [L157] ieee_float_shape_type gf_u; [L158] gf_u.value = (x) [L159] EXPR gf_u.word [L159] (hx) = gf_u.word [L161] ix = hx & 0x7fffffff [L162] COND TRUE ix == 0x3f800000 [L164] return x * pio2_hi_asin + x * pio2_lo_asin; [L229] RET, EXPR __ieee754_asinf(x) [L229] float res = __ieee754_asinf(x); [L232] CALL, EXPR isnan_float(res) [L58] return x != x; [L232] RET, EXPR isnan_float(res) [L232] COND TRUE !isnan_float(res) [L233] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 77 SDslu, 5 SDs, 0 SdLazy, 93 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1900 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...