/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=DEEPEST --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_0260.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:43:43,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:43:43,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:43:43,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:43:43,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:43:43,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:43:43,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:43:43,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:43:43,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:43:43,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:43:43,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:43:43,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:43:43,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:43:43,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:43:43,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:43:43,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:43:43,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:43:43,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:43:43,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:43:43,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:43:43,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:43:43,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:43:43,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:43:43,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:43:43,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:43:43,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:43:43,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:43:43,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:43:43,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:43:43,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:43:43,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:43:43,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:43:43,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:43:43,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:43:43,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:43:43,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:43:43,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:43:43,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:43:43,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:43:43,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:43:43,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:43:43,794 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 19:43:43,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:43:43,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:43:43,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:43:43,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:43:43,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:43:43,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:43:43,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:43:43,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:43:43,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:43:43,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:43:43,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:43:43,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:43:43,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:43:43,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:43:43,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:43:43,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:43:43,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:43:43,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:43:43,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:43:43,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:43:43,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:43:43,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:43:43,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:43:43,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:43:43,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:43:43,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:43:43,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:43:43,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:43:43,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:43:43,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:43:44,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:43:44,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:43:44,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:43:44,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:43:44,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:43:44,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0260.c [2020-10-27 19:43:44,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4155391/77e13e19defd45b5b3599bc6e131fecc/FLAGc9fceb809 [2020-10-27 19:43:45,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:43:45,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0260.c [2020-10-27 19:43:45,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4155391/77e13e19defd45b5b3599bc6e131fecc/FLAGc9fceb809 [2020-10-27 19:43:45,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b4155391/77e13e19defd45b5b3599bc6e131fecc [2020-10-27 19:43:45,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:43:45,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:43:45,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:45,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:43:45,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:43:45,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:45,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a05d30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45, skipping insertion in model container [2020-10-27 19:43:45,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:45,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:43:45,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:43:45,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:45,832 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:43:45,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:45,903 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:43:45,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45 WrapperNode [2020-10-27 19:43:45,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:45,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:43:45,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:43:45,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:43:45,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:45,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:45,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:45,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:46,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:46,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:46,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (1/1) ... [2020-10-27 19:43:46,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:43:46,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:43:46,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:43:46,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:43:46,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (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 19:43:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:43:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:43:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:43:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 19:43:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 19:43:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 19:43:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-27 19:43:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:43:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 19:43:46,149 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:43:46,150 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 19:43:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-27 19:43:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:43:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:43:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:43:46,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:43:46,751 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:43:46,751 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-27 19:43:46,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:46 BoogieIcfgContainer [2020-10-27 19:43:46,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:43:46,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:43:46,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:43:46,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:43:46,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:45" (1/3) ... [2020-10-27 19:43:46,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@faaa21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:46, skipping insertion in model container [2020-10-27 19:43:46,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:45" (2/3) ... [2020-10-27 19:43:46,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@faaa21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:46, skipping insertion in model container [2020-10-27 19:43:46,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:46" (3/3) ... [2020-10-27 19:43:46,764 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0260.c [2020-10-27 19:43:46,778 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:43:46,785 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:43:46,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:43:46,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:43:46,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:43:46,836 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:43:46,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:43:46,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:43:46,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:43:46,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:43:46,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:43:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-27 19:43:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:43:46,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:46,869 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 19:43:46,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1814094833, now seen corresponding path program 1 times [2020-10-27 19:43:46,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:46,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961496547] [2020-10-27 19:43:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:47,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:47,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:47,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:43:47,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 19:43:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:43:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:43:47,540 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 19:43:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:43:47,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:47,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:47,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:43:47,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:43:47,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:47,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:43:47,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:47,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 19:43:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:47,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:47,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:47,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:43:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:43:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:43:47,689 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 19:43:47,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961496547] [2020-10-27 19:43:47,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:47,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:43:47,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11418936] [2020-10-27 19:43:47,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:43:47,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:47,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:43:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:43:47,724 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-27 19:43:47,860 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 19:43:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:48,194 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2020-10-27 19:43:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:43:48,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 19:43:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:48,208 INFO L225 Difference]: With dead ends: 149 [2020-10-27 19:43:48,209 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 19:43:48,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:43:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 19:43:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-27 19:43:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 19:43:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-27 19:43:48,275 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 22 [2020-10-27 19:43:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:48,276 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-27 19:43:48,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:43:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-27 19:43:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:43:48,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:48,278 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, 1] [2020-10-27 19:43:48,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:43:48,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:48,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1000949009, now seen corresponding path program 1 times [2020-10-27 19:43:48,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:48,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299806512] [2020-10-27 19:43:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:43:48,346 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:43:48,347 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:43:48,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:43:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:48 BoogieIcfgContainer [2020-10-27 19:43:48,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:43:48,373 INFO L168 Benchmark]: Toolchain (without parser) took 2854.00 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 138.6 MB in the beginning and 165.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:48,374 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 130.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:48,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.70 ms. Allocated memory is still 157.3 MB. Free memory was 138.0 MB in the beginning and 124.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:48,376 INFO L168 Benchmark]: Boogie Preprocessor took 139.83 ms. Allocated memory is still 157.3 MB. Free memory was 124.6 MB in the beginning and 139.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:48,377 INFO L168 Benchmark]: RCFGBuilder took 707.01 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 107.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:48,378 INFO L168 Benchmark]: TraceAbstraction took 1615.45 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 106.6 MB in the beginning and 165.4 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:48,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 130.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.70 ms. Allocated memory is still 157.3 MB. Free memory was 138.0 MB in the beginning and 124.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.83 ms. Allocated memory is still 157.3 MB. Free memory was 124.6 MB in the beginning and 139.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 707.01 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 107.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1615.45 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 106.6 MB in the beginning and 165.4 MB in the end (delta: -58.9 MB). There was no memory consumed. 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 15, overapproximation of someUnaryDOUBLEoperation at line 104, overapproximation of bitwiseAnd at line 118, overapproximation of someUnaryFLOAToperation at line 102, overapproximation of someBinaryArithmeticFLOAToperation at line 121. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L100-L108] 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; [L185] float x = 0.0f / 0.0f; [L186] CALL, EXPR __ieee754_asinf(x) [L111] float t, w, p, q, c, r, s; [L112] __int32_t hx, ix; [L114] ieee_float_shape_type gf_u; [L115] gf_u.value = (x) [L116] EXPR gf_u.word [L116] (hx) = gf_u.word [L118] ix = hx & 0x7fffffff [L119] COND TRUE ix == 0x3f800000 [L121] return x * pio2_hi_asin + x * pio2_lo_asin; [L186] RET, EXPR __ieee754_asinf(x) [L186] float res = __ieee754_asinf(x); [L189] CALL, EXPR isnan_float(res) [L15] return x != x; [L189] RET, EXPR isnan_float(res) [L189] COND TRUE !isnan_float(res) [L190] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0260.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 14 SDslu, 75 SDs, 0 SdLazy, 89 SolverSat, 12 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 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...