/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_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:56,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:56,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:56,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:56,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:56,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:56,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:56,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:56,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:56,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:56,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:56,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:56,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:56,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:56,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:56,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:56,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:56,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:56,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:56,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:56,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:56,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:56,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:56,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:56,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:56,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:56,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:56,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:56,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:56,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:56,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:56,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:56,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:56,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:56,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:56,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:56,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:56,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:56,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:56,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:56,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:56,210 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 09:08:56,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:56,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:56,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:56,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:56,263 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:56,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:56,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:56,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:56,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:56,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:56,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:56,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:56,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:56,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:56,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:56,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:56,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:56,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:56,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:56,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:56,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:56,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:56,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:56,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:56,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:56,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:56,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:56,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:56,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:56,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:56,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:56,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:56,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:56,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:56,702 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:56,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c [2020-10-29 09:08:56,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ccc06d/7688a2d69bbd45258f4fbaebd7bd8d5d/FLAG373b1028a [2020-10-29 09:08:57,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:57,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c [2020-10-29 09:08:57,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ccc06d/7688a2d69bbd45258f4fbaebd7bd8d5d/FLAG373b1028a [2020-10-29 09:08:57,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ccc06d/7688a2d69bbd45258f4fbaebd7bd8d5d [2020-10-29 09:08:57,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:57,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:57,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:57,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:57,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:57,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:57" (1/1) ... [2020-10-29 09:08:57,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7a95fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:57, skipping insertion in model container [2020-10-29 09:08:57,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:57" (1/1) ... [2020-10-29 09:08:57,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:57,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:58,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:58,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:58,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:58,141 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:58,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58 WrapperNode [2020-10-29 09:08:58,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:58,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:58,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:58,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:58,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (1/1) ... [2020-10-29 09:08:58,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:58,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:58,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:58,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:58,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (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 09:08:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-29 09:08:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-29 09:08:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:58,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-29 09:08:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-29 09:08:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:58,926 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:58,926 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:08:58,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:58 BoogieIcfgContainer [2020-10-29 09:08:58,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:58,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:58,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:58,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:57" (1/3) ... [2020-10-29 09:08:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4480ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:58, skipping insertion in model container [2020-10-29 09:08:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:58" (2/3) ... [2020-10-29 09:08:58,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4480ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:58, skipping insertion in model container [2020-10-29 09:08:58,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:58" (3/3) ... [2020-10-29 09:08:58,937 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b.c [2020-10-29 09:08:58,956 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:58,963 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:58,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:59,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:59,017 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:59,017 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:59,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:59,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:59,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:59,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:59,018 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 09:08:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:08:59,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:59,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:59,048 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash -157164147, now seen corresponding path program 1 times [2020-10-29 09:08:59,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:59,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858482666] [2020-10-29 09:08:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:08:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 09:08:59,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:59,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:59,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:59,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:08:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:59,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:59,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:59,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:08:59,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:59,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:59,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:08:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:59,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:08:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:08:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:59,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:59,627 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 09:08:59,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858482666] [2020-10-29 09:08:59,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:59,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:59,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560935077] [2020-10-29 09:08:59,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:59,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:59,659 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-29 09:08:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:59,879 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2020-10-29 09:08:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:59,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 09:08:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:59,892 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:08:59,892 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 09:08:59,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 09:08:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-29 09:08:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:08:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-29 09:08:59,946 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 19 [2020-10-29 09:08:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:59,946 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-29 09:08:59,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-29 09:08:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:08:59,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:59,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:59,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:59,949 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:59,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1971757501, now seen corresponding path program 1 times [2020-10-29 09:08:59,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:59,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470193949] [2020-10-29 09:08:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:00,000 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:00,001 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:00,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:00,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:00 BoogieIcfgContainer [2020-10-29 09:09:00,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:00,030 INFO L168 Benchmark]: Toolchain (without parser) took 2188.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 66.9 MB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:00,031 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:00,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:00,033 INFO L168 Benchmark]: Boogie Preprocessor took 66.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:00,034 INFO L168 Benchmark]: RCFGBuilder took 718.04 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 127.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:00,035 INFO L168 Benchmark]: TraceAbstraction took 1097.01 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 66.9 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:00,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 718.04 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 127.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1097.01 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 66.9 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.8 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 82, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = 0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] EXPR res == 0.0f && __signbit_float(res) == 0 [L82] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L83] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1092b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 8 SDslu, 43 SDs, 0 SdLazy, 48 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...