/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0610.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:02,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:02,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:02,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:02,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:02,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:02,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:02,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:02,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:02,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:02,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:02,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:02,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:02,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:02,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:02,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:02,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:02,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:02,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:02,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:02,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:02,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:02,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:02,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:02,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:02,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:02,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:02,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:02,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:02,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:02,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:02,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:02,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:02,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:02,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:02,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:02,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:02,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:02,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:02,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:02,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:02,229 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 [2020-10-29 09:08:02,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:02,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:02,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:02,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:02,260 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:02,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:02,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:02,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:02,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:02,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:02,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:02,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:02,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:02,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:02,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:02,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:02,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:02,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:02,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:02,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:02,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:02,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:02,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:02,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:02,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:02,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:02,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:02,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:02,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:02,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:02,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:02,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:02,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:02,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:02,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:02,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610.c [2020-10-29 09:08:02,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9a9bef36/880526f31a674541a382a95ac9b65963/FLAG179d370fe [2020-10-29 09:08:03,463 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:03,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0610.c [2020-10-29 09:08:03,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9a9bef36/880526f31a674541a382a95ac9b65963/FLAG179d370fe [2020-10-29 09:08:03,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9a9bef36/880526f31a674541a382a95ac9b65963 [2020-10-29 09:08:03,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:03,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:03,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:03,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:03,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:03,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:03" (1/1) ... [2020-10-29 09:08:03,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450e6c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:03, skipping insertion in model container [2020-10-29 09:08:03,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:03" (1/1) ... [2020-10-29 09:08:03,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:03,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:04,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:04,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:04,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:04,264 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:04,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04 WrapperNode [2020-10-29 09:08:04,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:04,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:04,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:04,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:04,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (1/1) ... [2020-10-29 09:08:04,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:04,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:04,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:04,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:04,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (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 [2020-10-29 09:08:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:08:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:08:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-29 09:08:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:08:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-29 09:08:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:05,157 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:05,158 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:08:05,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:05 BoogieIcfgContainer [2020-10-29 09:08:05,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:05,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:05,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:05,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:03" (1/3) ... [2020-10-29 09:08:05,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5619e058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:05, skipping insertion in model container [2020-10-29 09:08:05,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:04" (2/3) ... [2020-10-29 09:08:05,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5619e058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:05, skipping insertion in model container [2020-10-29 09:08:05,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:05" (3/3) ... [2020-10-29 09:08:05,174 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610.c [2020-10-29 09:08:05,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:05,194 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:05,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:05,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:05,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:05,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:05,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:05,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:05,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:05,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:05,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-29 09:08:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:08:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:05,291 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] [2020-10-29 09:08:05,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1990892491, now seen corresponding path program 1 times [2020-10-29 09:08:05,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:05,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700674947] [2020-10-29 09:08:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:08:05,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 09:08:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:05,998 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 09:08:06,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:06,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:06,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:08:06,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:06,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:06,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:08:06,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:08:06,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:06,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:08:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:08:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:08:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:06,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:08:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:06,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700674947] [2020-10-29 09:08:06,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:06,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:06,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177999572] [2020-10-29 09:08:06,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:06,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:06,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:06,182 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-29 09:08:06,396 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 09:08:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:06,762 INFO L93 Difference]: Finished difference Result 97 states and 133 transitions. [2020-10-29 09:08:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:06,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:08:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:06,774 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:08:06,774 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:08:06,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:08:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 09:08:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:08:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-29 09:08:06,828 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 23 [2020-10-29 09:08:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:06,829 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-29 09:08:06,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-29 09:08:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:08:06,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:06,831 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, 1] [2020-10-29 09:08:06,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:06,831 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash 947782724, now seen corresponding path program 1 times [2020-10-29 09:08:06,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:06,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584618020] [2020-10-29 09:08:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:06,887 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:06,887 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:06,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:06,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:06 BoogieIcfgContainer [2020-10-29 09:08:06,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:06,912 INFO L168 Benchmark]: Toolchain (without parser) took 3081.71 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 133.8 MB in the beginning and 156.2 MB in the end (delta: -22.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:06,912 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:06,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.50 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 121.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:06,914 INFO L168 Benchmark]: Boogie Preprocessor took 104.13 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 119.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:06,915 INFO L168 Benchmark]: RCFGBuilder took 788.72 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 131.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:06,916 INFO L168 Benchmark]: TraceAbstraction took 1747.08 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 130.7 MB in the beginning and 156.2 MB in the end (delta: -25.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:06,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 158.3 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 424.50 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 121.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.13 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 119.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.72 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 131.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1747.08 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 130.7 MB in the beginning and 156.2 MB in the end (delta: -25.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] 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, }; [L54-L56] 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; [L129] float x = 0.0f / 0.0f; [L130] CALL, EXPR atan_float(x) [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff [L68] COND TRUE ix >= 0x50800000 [L69] COND TRUE ((ix) > 0x7f800000L) [L70] return x + x; [L130] RET, EXPR atan_float(x) [L130] float res = atan_float(x); [L133] CALL, EXPR isnan_float(res) [L17] return x != x; [L133] RET, EXPR isnan_float(res) [L133] COND TRUE !isnan_float(res) [L134] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0610.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 12 SDslu, 47 SDs, 0 SdLazy, 54 SolverSat, 10 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, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...