/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=SHALLOWEST --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_0970a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:45,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:45,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:45,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:45,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:45,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:45,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:45,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:45,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:45,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:45,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:45,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:45,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:45,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:45,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:45,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:45,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:45,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:45,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:45,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:45,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:45,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:45,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:45,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:45,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:45,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:45,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:45,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:45,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:45,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:45,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:45,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:45,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:45,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:45,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:45,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:45,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:45,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:45,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:45,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:45,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:45,277 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 01:03:45,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:45,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:45,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:45,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:45,306 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:45,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:45,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:45,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:45,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:45,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:45,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:45,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:45,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:45,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:45,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:45,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:45,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:45,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:45,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:45,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:45,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:45,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:45,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:45,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:45,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:45,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:45,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:45,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:45,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:45,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:45,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-10-27 01:03:45,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff5444cc/c8ea0447cc0e4a48b404c5cebe765034/FLAG3541664ca [2020-10-27 01:03:46,537 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:46,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-10-27 01:03:46,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff5444cc/c8ea0447cc0e4a48b404c5cebe765034/FLAG3541664ca [2020-10-27 01:03:46,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff5444cc/c8ea0447cc0e4a48b404c5cebe765034 [2020-10-27 01:03:46,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:46,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:46,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:46,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:46,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:46,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a66dee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:46, skipping insertion in model container [2020-10-27 01:03:46,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:46" (1/1) ... [2020-10-27 01:03:46,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:46,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:47,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:47,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:47,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:47,279 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:47,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47 WrapperNode [2020-10-27 01:03:47,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:47,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:47,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:47,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:47,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (1/1) ... [2020-10-27 01:03:47,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:47,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:47,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:47,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:47,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (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 01:03:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-27 01:03:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-27 01:03:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:03:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-27 01:03:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-27 01:03:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:48,029 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:48,030 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:03:48,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:48 BoogieIcfgContainer [2020-10-27 01:03:48,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:48,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:48,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:48,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:48,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:46" (1/3) ... [2020-10-27 01:03:48,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d55023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:48, skipping insertion in model container [2020-10-27 01:03:48,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:47" (2/3) ... [2020-10-27 01:03:48,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d55023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:48, skipping insertion in model container [2020-10-27 01:03:48,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:48" (3/3) ... [2020-10-27 01:03:48,060 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2020-10-27 01:03:48,087 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:48,092 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:48,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:48,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:48,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:48,137 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:48,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:48,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:48,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:48,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:48,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-10-27 01:03:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:03:48,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:48,168 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] [2020-10-27 01:03:48,168 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:48,176 INFO L82 PathProgramCache]: Analyzing trace with hash 963234427, now seen corresponding path program 1 times [2020-10-27 01:03:48,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:48,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412082767] [2020-10-27 01:03:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:03:48,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 01:03:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:03:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:03:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:03:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:03:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:48,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:03:48,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 01:03:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:48,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:03:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 01:03:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:48,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:03:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:03:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:48,941 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 01:03:48,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412082767] [2020-10-27 01:03:48,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:48,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:03:48,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520095777] [2020-10-27 01:03:48,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:03:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:48,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:03:48,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:48,972 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 5 states. [2020-10-27 01:03:49,248 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 01:03:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:49,579 INFO L93 Difference]: Finished difference Result 142 states and 207 transitions. [2020-10-27 01:03:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:03:49,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 01:03:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:49,592 INFO L225 Difference]: With dead ends: 142 [2020-10-27 01:03:49,592 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 01:03:49,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:03:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 01:03:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-27 01:03:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 01:03:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-10-27 01:03:49,650 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2020-10-27 01:03:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:49,650 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-10-27 01:03:49,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:03:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-10-27 01:03:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 01:03:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:49,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:49,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:49,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash 229192464, now seen corresponding path program 1 times [2020-10-27 01:03:49,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:49,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097782405] [2020-10-27 01:03:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:49,713 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:49,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:49,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:49,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:49 BoogieIcfgContainer [2020-10-27 01:03:49,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:49,753 INFO L168 Benchmark]: Toolchain (without parser) took 2858.97 ms. Allocated memory is still 170.9 MB. Free memory was 146.5 MB in the beginning and 108.9 MB in the end (delta: 37.6 MB). Peak memory consumption was 39.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:49,755 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:49,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.30 ms. Allocated memory is still 170.9 MB. Free memory was 145.8 MB in the beginning and 132.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:49,758 INFO L168 Benchmark]: Boogie Preprocessor took 68.49 ms. Allocated memory is still 170.9 MB. Free memory was 132.6 MB in the beginning and 130.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:49,758 INFO L168 Benchmark]: RCFGBuilder took 678.82 ms. Allocated memory is still 170.9 MB. Free memory was 130.3 MB in the beginning and 149.8 MB in the end (delta: -19.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:49,760 INFO L168 Benchmark]: TraceAbstraction took 1715.24 ms. Allocated memory is still 170.9 MB. Free memory was 149.2 MB in the beginning and 108.9 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:49,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.30 ms. Allocated memory is still 170.9 MB. Free memory was 145.8 MB in the beginning and 132.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.49 ms. Allocated memory is still 170.9 MB. Free memory was 132.6 MB in the beginning and 130.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 678.82 ms. Allocated memory is still 170.9 MB. Free memory was 130.3 MB in the beginning and 149.8 MB in the end (delta: -19.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1715.24 ms. Allocated memory is still 170.9 MB. Free memory was 149.2 MB in the beginning and 108.9 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 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 147, overapproximation of bitwiseAnd at line 118, overapproximation of someBinaryArithmeticFLOAToperation at line 119. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L100-L103] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L105] static const float zero = 0.0; [L168] float x = __VERIFIER_nondet_float(); [L170] x < 0 && isfinite_float(x) [L170] CALL, EXPR isfinite_float(x) [L151] __int32_t ix; [L153] ieee_float_shape_type gf_u; [L154] gf_u.value = (x) [L155] EXPR gf_u.word [L155] (ix) = gf_u.word [L157] ix &= 0x7fffffff [L158] return (((ix) < 0x7f800000L)); [L170] RET, EXPR isfinite_float(x) [L170] x < 0 && isfinite_float(x) [L170] COND TRUE x < 0 && isfinite_float(x) [L172] CALL, EXPR __ieee754_log10f(x) [L108] float y, z; [L109] __int32_t i, k, hx; [L112] ieee_float_shape_type gf_u; [L113] gf_u.value = (x) [L114] EXPR gf_u.word [L114] (hx) = gf_u.word [L117] k = 0 [L118] COND TRUE ((hx & 0x7fffffff) == 0) [L119] return -two25_log10 / zero; [L172] RET, EXPR __ieee754_log10f(x) [L172] float res = __ieee754_log10f(x); [L175] CALL, EXPR isnan_float(res) [L147] return x != x; [L175] RET, EXPR isnan_float(res) [L175] COND TRUE !isnan_float(res) [L176] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0970a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 22 SDslu, 135 SDs, 0 SdLazy, 101 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2622 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...