/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_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:03,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:03,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:03,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:03,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:03,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:03,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:03,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:03,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:03,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:03,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:03,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:03,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:03,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:03,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:03,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:03,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:03,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:03,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:03,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:03,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:03,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:03,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:03,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:03,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:03,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:03,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:03,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:03,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:03,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:03,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:03,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:03,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:03,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:03,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:03,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:03,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:03,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:03,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:03,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:03,613 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 19:44:03,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:03,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:03,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:03,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:03,673 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:03,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:03,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:03,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:03,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:03,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:03,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:03,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:03,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:03,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:03,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:03,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:03,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:03,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:03,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:03,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:03,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:03,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:03,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:03,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:03,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:03,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:03,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:03,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:03,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:03,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:04,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:04,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:04,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:04,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:04,141 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:04,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-27 19:44:04,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0d9c43/97ec02409f974ea38c0d365ce183f7f6/FLAGe6c4abda8 [2020-10-27 19:44:04,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:04,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-27 19:44:04,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0d9c43/97ec02409f974ea38c0d365ce183f7f6/FLAGe6c4abda8 [2020-10-27 19:44:05,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aea0d9c43/97ec02409f974ea38c0d365ce183f7f6 [2020-10-27 19:44:05,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:05,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:05,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:05,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:05,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:05,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673a8e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05, skipping insertion in model container [2020-10-27 19:44:05,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:05,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:05,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:05,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:05,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:05,692 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:05,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05 WrapperNode [2020-10-27 19:44:05,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:05,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:05,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:05,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:05,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (1/1) ... [2020-10-27 19:44:05,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:05,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:05,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:05,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:05,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (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 19:44:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 19:44:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 19:44:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-27 19:44:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 19:44:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 19:44:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-27 19:44:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:06,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:06,869 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 19:44:06,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:06 BoogieIcfgContainer [2020-10-27 19:44:06,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:06,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:06,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:06,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:05" (1/3) ... [2020-10-27 19:44:06,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a283153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:06, skipping insertion in model container [2020-10-27 19:44:06,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:05" (2/3) ... [2020-10-27 19:44:06,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a283153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:06, skipping insertion in model container [2020-10-27 19:44:06,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:06" (3/3) ... [2020-10-27 19:44:06,883 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0660a.c [2020-10-27 19:44:06,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:06,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:06,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:06,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:06,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:06,947 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:06,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:06,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:06,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:06,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:06,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-27 19:44:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:44:06,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:06,978 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 19:44:06,978 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-27 19:44:06,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:06,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964091345] [2020-10-27 19:44:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:07,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:44:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-27 19:44:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:44:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:07,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:07,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:07,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:07,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 19:44:07,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:07,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:07,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:07,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:07,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:44:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:07,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:07,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:44:07,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:44:07,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:44:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-27 19:44:07,803 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 19:44:07,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964091345] [2020-10-27 19:44:07,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:07,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:07,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604657237] [2020-10-27 19:44:07,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:07,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:07,832 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-27 19:44:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:08,303 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-27 19:44:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:08,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 19:44:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:08,317 INFO L225 Difference]: With dead ends: 201 [2020-10-27 19:44:08,317 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 19:44:08,322 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 19:44:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 19:44:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-27 19:44:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 19:44:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-27 19:44:08,384 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-27 19:44:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:08,384 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-27 19:44:08,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-27 19:44:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:44:08,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:08,389 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 19:44:08,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:08,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-27 19:44:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:08,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179287655] [2020-10-27 19:44:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:08,499 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:08,499 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:08,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:08,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:08 BoogieIcfgContainer [2020-10-27 19:44:08,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:08,527 INFO L168 Benchmark]: Toolchain (without parser) took 3262.93 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 61.9 MB in the end (delta: 67.4 MB). Peak memory consumption was 68.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:08,528 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:08,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.13 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 114.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:08,530 INFO L168 Benchmark]: Boogie Preprocessor took 109.20 ms. Allocated memory is still 154.1 MB. Free memory was 114.8 MB in the beginning and 111.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:08,531 INFO L168 Benchmark]: RCFGBuilder took 1063.84 ms. Allocated memory is still 154.1 MB. Free memory was 111.8 MB in the beginning and 106.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:08,532 INFO L168 Benchmark]: TraceAbstraction took 1650.85 ms. Allocated memory is still 154.1 MB. Free memory was 105.8 MB in the beginning and 61.9 MB in the end (delta: 43.9 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:08,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 420.13 ms. Allocated memory is still 154.1 MB. Free memory was 128.7 MB in the beginning and 114.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 109.20 ms. Allocated memory is still 154.1 MB. Free memory was 114.8 MB in the beginning and 111.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1063.84 ms. Allocated memory is still 154.1 MB. Free memory was 111.8 MB in the beginning and 106.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1650.85 ms. Allocated memory is still 154.1 MB. Free memory was 105.8 MB in the beginning and 61.9 MB in the end (delta: 43.9 MB). Peak memory consumption was 45.4 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 231, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 219, 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; [L218] float x = __VERIFIER_nondet_float(); [L219] float y = -0.0f; [L226] COND TRUE x < 0.0f && y == -0.0f [L228] 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; [L228] RET, EXPR __ieee754_atan2f(y, x) [L228] float res = __ieee754_atan2f(y, x); [L231] COND TRUE res != -pi [L232] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0660a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 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: 138 SDtfs, 18 SDslu, 123 SDs, 0 SdLazy, 135 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=105occurred 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...