/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_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:09,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:09,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:09,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:09,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:09,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:09,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:09,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:09,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:09,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:09,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:09,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:09,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:09,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:09,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:09,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:09,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:09,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:09,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:09,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:09,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:09,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:09,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:09,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:09,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:09,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:09,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:09,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:09,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:09,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:09,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:09,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:09,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:09,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:09,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:09,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:09,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:09,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:09,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:09,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:09,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:09,580 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 01:03:09,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:09,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:09,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:09,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:09,635 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:09,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:09,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:09,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:09,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:09,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:09,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:09,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:09,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:09,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:09,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:09,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:09,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:09,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:09,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:09,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:09,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:09,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:09,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:09,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:09,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:09,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:09,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:09,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:09,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:09,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:10,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:10,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:10,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:10,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:10,104 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:10,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-27 01:03:10,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/215b067f7/d65ea1eb31754c698ae3d2e459002a8c/FLAG9bbe92afb [2020-10-27 01:03:10,858 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:10,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-27 01:03:10,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/215b067f7/d65ea1eb31754c698ae3d2e459002a8c/FLAG9bbe92afb [2020-10-27 01:03:11,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/215b067f7/d65ea1eb31754c698ae3d2e459002a8c [2020-10-27 01:03:11,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:11,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:11,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:11,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:11,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:11,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a5d25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11, skipping insertion in model container [2020-10-27 01:03:11,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:11,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:11,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:11,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:11,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:11,566 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:11,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11 WrapperNode [2020-10-27 01:03:11,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:11,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:11,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:11,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:11,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (1/1) ... [2020-10-27 01:03:11,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:11,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:11,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:11,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:11,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (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 01:03:11,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:03:11,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:03:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:12,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:12,508 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 01:03:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:12 BoogieIcfgContainer [2020-10-27 01:03:12,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:12,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:12,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:12,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:12,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:11" (1/3) ... [2020-10-27 01:03:12,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c69ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:12, skipping insertion in model container [2020-10-27 01:03:12,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:11" (2/3) ... [2020-10-27 01:03:12,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c69ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:12, skipping insertion in model container [2020-10-27 01:03:12,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:12" (3/3) ... [2020-10-27 01:03:12,525 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-27 01:03:12,539 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:12,545 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:12,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:12,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:12,604 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:12,604 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:12,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:12,604 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:12,604 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:12,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:12,605 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-27 01:03:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:03:12,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:12,639 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 01:03:12,640 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash -75419188, now seen corresponding path program 1 times [2020-10-27 01:03:12,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:12,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287794730] [2020-10-27 01:03:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:13,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:13,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:03:13,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 01:03:13,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:03:13,231 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 01:03:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:13,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:13,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:13,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:13,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 01:03:13,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:13,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:13,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:13,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:03:13,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:03:13,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:13,318 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 01:03:13,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287794730] [2020-10-27 01:03:13,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:13,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:13,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340291348] [2020-10-27 01:03:13,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:13,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:13,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:13,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:13,345 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-27 01:03:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:13,617 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2020-10-27 01:03:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:13,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 01:03:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:13,628 INFO L225 Difference]: With dead ends: 105 [2020-10-27 01:03:13,629 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 01:03:13,633 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 01:03:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 01:03:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-27 01:03:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 01:03:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-27 01:03:13,682 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2020-10-27 01:03:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:13,682 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-27 01:03:13,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-27 01:03:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:03:13,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:13,684 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 01:03:13,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:13,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash 960537085, now seen corresponding path program 1 times [2020-10-27 01:03:13,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:13,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474803630] [2020-10-27 01:03:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:13,746 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:13,746 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:13,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:13,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:13 BoogieIcfgContainer [2020-10-27 01:03:13,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:13,775 INFO L168 Benchmark]: Toolchain (without parser) took 2559.37 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 72.1 MB in the end (delta: 57.5 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:13,776 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:13,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.64 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 117.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:13,777 INFO L168 Benchmark]: Boogie Preprocessor took 63.25 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 114.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:13,779 INFO L168 Benchmark]: RCFGBuilder took 878.48 ms. Allocated memory is still 153.1 MB. Free memory was 114.6 MB in the beginning and 122.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:13,780 INFO L168 Benchmark]: TraceAbstraction took 1257.59 ms. Allocated memory is still 153.1 MB. Free memory was 121.9 MB in the beginning and 72.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:13,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.64 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 117.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.25 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 114.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 878.48 ms. Allocated memory is still 153.1 MB. Free memory was 114.6 MB in the beginning and 122.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1257.59 ms. Allocated memory is still 153.1 MB. Free memory was 121.9 MB in the beginning and 72.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] 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, }; [L51-L53] 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; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 60 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1728 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...