/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:11,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:11,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:11,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:11,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:11,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:11,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:11,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:11,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:11,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:11,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:11,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:11,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:11,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:11,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:11,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:11,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:11,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:11,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:11,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:11,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:11,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:11,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:11,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:11,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:11,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:11,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:11,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:11,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:11,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:11,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:11,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:11,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:11,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:11,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:11,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:11,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:11,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:11,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:11,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:11,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:11,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:44:11,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:11,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:11,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:11,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:11,565 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:11,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:11,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:11,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:11,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:11,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:11,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:11,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:11,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:11,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:11,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:11,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:11,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:11,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:11,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:11,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:11,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:11,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:11,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:11,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:11,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:11,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:11,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:11,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:11,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:11,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:12,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:12,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:12,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:12,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:12,040 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:12,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-27 19:44:12,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bae9993a/86bc86745ff44483a32a80c0089477fa/FLAGfb1b3857d [2020-10-27 19:44:12,691 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:12,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2020-10-27 19:44:12,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bae9993a/86bc86745ff44483a32a80c0089477fa/FLAGfb1b3857d [2020-10-27 19:44:13,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bae9993a/86bc86745ff44483a32a80c0089477fa [2020-10-27 19:44:13,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:13,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:13,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:13,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:13,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:13,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bea0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13, skipping insertion in model container [2020-10-27 19:44:13,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:13,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:13,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:13,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:13,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:13,515 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:13,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13 WrapperNode [2020-10-27 19:44:13,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:13,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:13,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:13,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:13,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... [2020-10-27 19:44:13,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:13,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:13,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:13,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:13,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:13,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:13,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 19:44:13,759 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 19:44:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 19:44:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 19:44:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 19:44:13,766 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 19:44:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:13,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:13,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:14,983 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:14,983 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 19:44:14,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:14 BoogieIcfgContainer [2020-10-27 19:44:14,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:14,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:14,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:14,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:14,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:13" (1/3) ... [2020-10-27 19:44:14,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd21526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:14, skipping insertion in model container [2020-10-27 19:44:14,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:13" (2/3) ... [2020-10-27 19:44:14,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd21526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:14, skipping insertion in model container [2020-10-27 19:44:14,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:14" (3/3) ... [2020-10-27 19:44:14,998 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2020-10-27 19:44:15,013 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:15,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:15,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:15,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:15,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:15,078 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:15,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:15,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:15,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:15,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:15,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-27 19:44:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 19:44:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:15,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:44:15,118 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2093410893, now seen corresponding path program 1 times [2020-10-27 19:44:15,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:15,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656574880] [2020-10-27 19:44:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:44:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 19:44:15,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:15,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:15,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 19:44:15,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:44:15,860 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 19:44:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:15,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:15,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:15,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 19:44:15,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:44:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:16,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:16,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:44:16,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:44:16,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:44:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:44:16,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656574880] [2020-10-27 19:44:16,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:16,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:16,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938836955] [2020-10-27 19:44:16,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:16,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:16,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:16,070 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-27 19:44:16,208 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 19:44:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:16,595 INFO L93 Difference]: Finished difference Result 195 states and 308 transitions. [2020-10-27 19:44:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:16,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 19:44:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:16,609 INFO L225 Difference]: With dead ends: 195 [2020-10-27 19:44:16,609 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 19:44:16,614 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 19:44:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 19:44:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 19:44:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 19:44:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-27 19:44:16,673 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-27 19:44:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:16,674 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-27 19:44:16,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-27 19:44:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:44:16,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:16,676 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] [2020-10-27 19:44:16,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:16,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2002604426, now seen corresponding path program 1 times [2020-10-27 19:44:16,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:16,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368799990] [2020-10-27 19:44:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:16,764 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:16,769 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:16,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:16,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:16 BoogieIcfgContainer [2020-10-27 19:44:16,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:16,803 INFO L168 Benchmark]: Toolchain (without parser) took 3711.98 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 67.7 MB in the end (delta: 63.6 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:16,804 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:16,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.61 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 117.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:16,814 INFO L168 Benchmark]: Boogie Preprocessor took 117.97 ms. Allocated memory is still 156.2 MB. Free memory was 116.8 MB in the beginning and 114.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:16,815 INFO L168 Benchmark]: RCFGBuilder took 1348.50 ms. Allocated memory is still 156.2 MB. Free memory was 114.0 MB in the beginning and 108.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:16,816 INFO L168 Benchmark]: TraceAbstraction took 1808.67 ms. Allocated memory is still 156.2 MB. Free memory was 107.7 MB in the beginning and 67.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:16,827 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 156.2 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 417.61 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 117.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.97 ms. Allocated memory is still 156.2 MB. Free memory was 116.8 MB in the beginning and 114.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1348.50 ms. Allocated memory is still 156.2 MB. Free memory was 114.0 MB in the beginning and 108.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1808.67 ms. Allocated memory is still 156.2 MB. Free memory was 107.7 MB in the beginning and 67.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 227, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 222, 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; [L222] float x = -0.0f; [L223] float y = 0.0f; [L224] 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; [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != pi [L228] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0680a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 10 SDslu, 124 SDs, 0 SdLazy, 132 SolverSat, 14 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=103occurred 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, 0.7s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1836 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...