/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:19,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:19,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:19,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:19,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:19,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:19,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:19,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:19,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:19,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:19,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:19,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:19,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:19,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:19,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:19,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:19,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:19,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:19,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:19,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:19,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:19,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:19,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:19,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:19,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:19,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:19,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:19,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:19,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:19,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:19,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:19,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:19,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:19,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:19,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:19,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:19,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:19,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:19,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:19,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:19,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:19,452 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 01:03:19,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:19,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:19,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:19,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:19,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:19,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:19,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:19,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:19,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:19,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:19,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:19,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:19,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:19,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:19,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:19,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:19,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:19,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:19,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:19,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:19,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:19,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:19,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:19,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:19,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:19,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:19,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:19,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:19,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:19,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:19,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:20,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:20,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:20,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:20,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:20,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-27 01:03:20,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29dd90588/c0adce74579b4e8b88a20b97d9af6558/FLAG060361f34 [2020-10-27 01:03:21,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:21,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-27 01:03:21,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29dd90588/c0adce74579b4e8b88a20b97d9af6558/FLAG060361f34 [2020-10-27 01:03:21,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29dd90588/c0adce74579b4e8b88a20b97d9af6558 [2020-10-27 01:03:21,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:21,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:21,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:21,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:21,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:21,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59dd5fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21, skipping insertion in model container [2020-10-27 01:03:21,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:21,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:21,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:21,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:21,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:21,808 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:21,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21 WrapperNode [2020-10-27 01:03:21,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:21,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:21,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:21,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:21,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (1/1) ... [2020-10-27 01:03:21,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:21,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:21,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:21,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:21,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (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 01:03:22,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:22,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:03:22,017 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 01:03:22,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 01:03:22,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:03:22,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:22,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:03:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:22,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 01:03:22,024 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:03:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:22,744 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:22,744 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-27 01:03:22,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:22 BoogieIcfgContainer [2020-10-27 01:03:22,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:22,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:22,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:22,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:21" (1/3) ... [2020-10-27 01:03:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7949af5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:22, skipping insertion in model container [2020-10-27 01:03:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:21" (2/3) ... [2020-10-27 01:03:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7949af5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:22, skipping insertion in model container [2020-10-27 01:03:22,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:22" (3/3) ... [2020-10-27 01:03:22,760 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2020-10-27 01:03:22,774 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:22,780 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:22,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:22,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:22,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:22,836 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:22,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:22,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:22,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:22,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:22,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-27 01:03:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:03:22,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:22,863 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] [2020-10-27 01:03:22,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1855715709, now seen corresponding path program 1 times [2020-10-27 01:03:22,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021413617] [2020-10-27 01:03:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:03:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 01:03:23,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 01:03:23,590 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:03:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:23,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:23,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:03:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:23,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:03:23,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 01:03:23,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:23,712 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 01:03:23,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021413617] [2020-10-27 01:03:23,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:23,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:23,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969414170] [2020-10-27 01:03:23,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:23,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:23,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:23,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:23,741 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-10-27 01:03:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:24,274 INFO L93 Difference]: Finished difference Result 213 states and 333 transitions. [2020-10-27 01:03:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:24,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:03:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:24,288 INFO L225 Difference]: With dead ends: 213 [2020-10-27 01:03:24,288 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 01:03:24,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 01:03:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-27 01:03:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 01:03:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2020-10-27 01:03:24,356 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 20 [2020-10-27 01:03:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:24,356 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2020-10-27 01:03:24,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2020-10-27 01:03:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:03:24,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:24,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:24,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:24,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash -328213370, now seen corresponding path program 1 times [2020-10-27 01:03:24,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:24,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786904596] [2020-10-27 01:03:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:24,422 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:24,423 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:24,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:24 BoogieIcfgContainer [2020-10-27 01:03:24,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:24,449 INFO L168 Benchmark]: Toolchain (without parser) took 3190.78 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 65.1 MB in the end (delta: 67.4 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:24,450 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:24,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.71 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 117.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:24,452 INFO L168 Benchmark]: Boogie Preprocessor took 105.08 ms. Allocated memory is still 158.3 MB. Free memory was 117.8 MB in the beginning and 115.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:24,453 INFO L168 Benchmark]: RCFGBuilder took 826.51 ms. Allocated memory is still 158.3 MB. Free memory was 115.0 MB in the beginning and 107.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:24,454 INFO L168 Benchmark]: TraceAbstraction took 1695.86 ms. Allocated memory is still 158.3 MB. Free memory was 107.8 MB in the beginning and 65.1 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:24,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 158.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 543.71 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 117.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.08 ms. Allocated memory is still 158.3 MB. Free memory was 117.8 MB in the beginning and 115.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 826.51 ms. Allocated memory is still 158.3 MB. Free memory was 115.0 MB in the beginning and 107.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1695.86 ms. Allocated memory is still 158.3 MB. Free memory was 107.8 MB in the beginning and 65.1 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.2 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 240, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 236, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] 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, }; [L49-L51] 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; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L235] float x = 0.0f; [L236] float y = -0.0f; [L237] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L237] RET, EXPR __ieee754_atan2f(y, x) [L237] float res = __ieee754_atan2f(y, x); [L240] EXPR res == -0.0f && __signbit_float(res) == 1 [L240] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L241] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0681a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 12 SDslu, 132 SDs, 0 SdLazy, 141 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...