/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:59,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:59,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:59,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:59,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:59,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:59,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:59,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:59,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:59,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:59,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:59,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:59,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:59,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:59,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:59,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:59,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:59,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:59,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:59,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:59,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:59,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:59,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:59,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:59,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:59,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:59,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:59,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:59,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:59,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:59,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:59,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:59,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:59,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:59,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:59,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:59,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:59,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:59,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:59,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:59,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:59,499 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 [2020-10-12 15:30:59,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:59,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:59,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:59,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:59,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:59,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:59,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:59,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:59,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:59,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:59,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:59,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:59,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:59,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:59,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:59,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:59,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:59,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:59,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:59,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:59,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:59,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:59,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:59,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:59,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:59,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:59,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:59,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:59,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:59,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:30:59,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:59,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:59,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:59,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:59,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:59,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-12 15:30:59,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d459432/48ad8a63e6e5451bb1964d584ad2dd52/FLAG0cf858dbf [2020-10-12 15:31:00,385 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:31:00,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-12 15:31:00,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d459432/48ad8a63e6e5451bb1964d584ad2dd52/FLAG0cf858dbf [2020-10-12 15:31:00,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d459432/48ad8a63e6e5451bb1964d584ad2dd52 [2020-10-12 15:31:00,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:31:00,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:31:00,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:00,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:31:00,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:31:00,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:00" (1/1) ... [2020-10-12 15:31:00,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dab3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:00, skipping insertion in model container [2020-10-12 15:31:00,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:00" (1/1) ... [2020-10-12 15:31:00,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:31:00,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:31:01,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:01,033 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:31:01,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:01,226 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:31:01,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01 WrapperNode [2020-10-12 15:31:01,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:01,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:31:01,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:31:01,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:31:01,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (1/1) ... [2020-10-12 15:31:01,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:31:01,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:31:01,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:31:01,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:31:01,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (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 [2020-10-12 15:31:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:31:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:31:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:31:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:31:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-12 15:31:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-12 15:31:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-12 15:31:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-12 15:31:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:31:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:31:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-12 15:31:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-12 15:31:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-12 15:31:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:31:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:31:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:31:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:02,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:02,147 INFO L295 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-12 15:31:02,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:02 BoogieIcfgContainer [2020-10-12 15:31:02,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:02,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:02,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:02,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:31:00" (1/3) ... [2020-10-12 15:31:02,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2434bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:02, skipping insertion in model container [2020-10-12 15:31:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:01" (2/3) ... [2020-10-12 15:31:02,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2434bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:02, skipping insertion in model container [2020-10-12 15:31:02,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:02" (3/3) ... [2020-10-12 15:31:02,161 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0683a.c [2020-10-12 15:31:02,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:02,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:02,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:02,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:02,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:02,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:02,218 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:02,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:02,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:02,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:02,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-12 15:31:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:31:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:02,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:02,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 466315102, now seen corresponding path program 1 times [2020-10-12 15:31:02,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:02,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185485876] [2020-10-12 15:31:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:02,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:02,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:31:03,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:31:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-12 15:31:03,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:03,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:31:03,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:31:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:31:03,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:31:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:31:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:31:03,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:31:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:03,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:03,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:03,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:31:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:31:03,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:03,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:03,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185485876] [2020-10-12 15:31:03,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:03,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:31:03,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194527876] [2020-10-12 15:31:03,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:31:03,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:03,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:31:03,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:31:03,525 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-10-12 15:31:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:04,018 INFO L93 Difference]: Finished difference Result 251 states and 389 transitions. [2020-10-12 15:31:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:31:04,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-12 15:31:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:04,032 INFO L225 Difference]: With dead ends: 251 [2020-10-12 15:31:04,032 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 15:31:04,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:31:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 15:31:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-12 15:31:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 15:31:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2020-10-12 15:31:04,095 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 28 [2020-10-12 15:31:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:04,095 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2020-10-12 15:31:04,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:31:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2020-10-12 15:31:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:31:04,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:04,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:04,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:04,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash 810186703, now seen corresponding path program 1 times [2020-10-12 15:31:04,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:04,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926444596] [2020-10-12 15:31:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:04,170 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:04,171 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:04,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:04,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:04 BoogieIcfgContainer [2020-10-12 15:31:04,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:04,200 INFO L168 Benchmark]: Toolchain (without parser) took 3480.40 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 102.8 MB in the beginning and 167.1 MB in the end (delta: -64.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:04,201 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:04,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:04,202 INFO L168 Benchmark]: Boogie Preprocessor took 85.05 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 173.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:04,203 INFO L168 Benchmark]: RCFGBuilder took 839.79 ms. Allocated memory is still 203.4 MB. Free memory was 173.8 MB in the beginning and 121.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:04,204 INFO L168 Benchmark]: TraceAbstraction took 2042.95 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 121.1 MB in the beginning and 167.1 MB in the end (delta: -46.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:31:04,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 507.65 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 177.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.05 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 173.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 839.79 ms. Allocated memory is still 203.4 MB. Free memory was 173.8 MB in the beginning and 121.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2042.95 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 121.1 MB in the beginning and 167.1 MB in the end (delta: -46.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 298]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 297. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L289] double x = 1.0 / 0.0; [L290] double y = __VERIFIER_nondet_double(); [L292] CALL, EXPR isinf_double(x) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L292] RET, EXPR isinf_double(x) [L292] EXPR isinf_double(x) && isfinite_double(y) [L292] CALL, EXPR isfinite_double(y) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L292] RET, EXPR isfinite_double(y) [L292] EXPR isinf_double(x) && isfinite_double(y) [L292] COND TRUE isinf_double(x) && isfinite_double(y) && y < 0.0 [L294] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L294] RET, EXPR __ieee754_atan2(y, x) [L294] double res = __ieee754_atan2(y, x); [L297] EXPR res == -0.0 && __signbit_double(res) == 1 [L297] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L298] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 163 SDtfs, 14 SDslu, 301 SDs, 0 SdLazy, 185 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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, 1.0s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 2862 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...