/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_0661b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:09,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:09,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:09,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:09,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:09,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:09,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:09,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:09,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:09,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:09,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:09,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:09,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:09,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:09,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:09,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:09,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:09,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:09,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:09,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:09,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:09,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:09,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:09,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:09,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:09,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:09,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:09,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:09,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:09,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:09,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:09,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:09,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:09,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:09,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:09,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:09,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:09,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:09,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:09,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:09,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:09,732 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 [2020-10-14 04:46:09,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:09,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:09,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:09,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:09,777 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:09,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:09,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:09,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:09,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:09,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:09,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:09,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:09,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:09,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:09,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:09,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:09,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:09,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:09,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:09,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:09,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:09,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:09,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:09,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:09,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:09,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:09,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:09,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:09,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:09,783 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:46:10,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:10,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:10,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:10,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:10,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:10,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-14 04:46:10,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e892a3381/dca325de97d041e3b8c3244fdd0e4f4a/FLAG72d10e05a [2020-10-14 04:46:10,547 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:10,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-14 04:46:10,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e892a3381/dca325de97d041e3b8c3244fdd0e4f4a/FLAG72d10e05a [2020-10-14 04:46:10,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e892a3381/dca325de97d041e3b8c3244fdd0e4f4a [2020-10-14 04:46:10,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:10,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:10,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:10,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:10,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:10,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:10" (1/1) ... [2020-10-14 04:46:10,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130f42b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:10, skipping insertion in model container [2020-10-14 04:46:10,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:10" (1/1) ... [2020-10-14 04:46:10,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:10,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:11,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:11,308 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:11,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:11,394 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:11,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11 WrapperNode [2020-10-14 04:46:11,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:11,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:11,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:11,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:11,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (1/1) ... [2020-10-14 04:46:11,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:11,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:11,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:11,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:11,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (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 [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 04:46:11,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:11,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:12,226 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:12,226 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-14 04:46:12,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:12 BoogieIcfgContainer [2020-10-14 04:46:12,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:12,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:12,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:12,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:12,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:10" (1/3) ... [2020-10-14 04:46:12,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69936711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:12, skipping insertion in model container [2020-10-14 04:46:12,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:11" (2/3) ... [2020-10-14 04:46:12,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69936711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:12, skipping insertion in model container [2020-10-14 04:46:12,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:12" (3/3) ... [2020-10-14 04:46:12,240 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2020-10-14 04:46:12,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:12,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:12,271 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:12,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:12,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:12,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:12,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:12,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:12,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:12,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:12,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-14 04:46:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:46:12,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:12,326 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] [2020-10-14 04:46:12,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash 913677384, now seen corresponding path program 1 times [2020-10-14 04:46:12,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:12,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155274261] [2020-10-14 04:46:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:12,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:46:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 04:46:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:12,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 04:46:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:46:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:12,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:46:12,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:12,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 04:46:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:13,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:46:13,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:13,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:13,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155274261] [2020-10-14 04:46:13,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:13,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:13,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693410094] [2020-10-14 04:46:13,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:13,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:13,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:13,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:13,047 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-10-14 04:46:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:13,452 INFO L93 Difference]: Finished difference Result 218 states and 342 transitions. [2020-10-14 04:46:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:13,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 04:46:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:13,465 INFO L225 Difference]: With dead ends: 218 [2020-10-14 04:46:13,465 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 04:46:13,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 04:46:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-14 04:46:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 04:46:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-14 04:46:13,525 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-14 04:46:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:13,526 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-14 04:46:13,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-14 04:46:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:46:13,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:13,528 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] [2020-10-14 04:46:13,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:13,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:13,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:13,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1713483969, now seen corresponding path program 1 times [2020-10-14 04:46:13,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:13,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99429828] [2020-10-14 04:46:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:13,575 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:13,575 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:13,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:13,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:13 BoogieIcfgContainer [2020-10-14 04:46:13,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:13,601 INFO L168 Benchmark]: Toolchain (without parser) took 2692.20 ms. Allocated memory was 148.9 MB in the beginning and 233.3 MB in the end (delta: 84.4 MB). Free memory was 103.6 MB in the beginning and 116.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,601 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.12 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 179.8 MB in the end (delta: -76.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,604 INFO L168 Benchmark]: Boogie Preprocessor took 112.23 ms. Allocated memory is still 206.0 MB. Free memory was 179.8 MB in the beginning and 176.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,604 INFO L168 Benchmark]: RCFGBuilder took 723.17 ms. Allocated memory is still 206.0 MB. Free memory was 176.1 MB in the beginning and 130.4 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,605 INFO L168 Benchmark]: TraceAbstraction took 1364.94 ms. Allocated memory was 206.0 MB in the beginning and 233.3 MB in the end (delta: 27.3 MB). Free memory was 129.5 MB in the beginning and 116.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:13,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 487.12 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 179.8 MB in the end (delta: -76.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.23 ms. Allocated memory is still 206.0 MB. Free memory was 179.8 MB in the beginning and 176.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.17 ms. Allocated memory is still 206.0 MB. Free memory was 176.1 MB in the beginning and 130.4 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1364.94 ms. Allocated memory was 206.0 MB in the beginning and 233.3 MB in the end (delta: 27.3 MB). Free memory was 129.5 MB in the beginning and 116.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 271]: 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 bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 270. 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; [L264] double x = __VERIFIER_nondet_double(); [L265] double y = 0.0; [L267] COND TRUE x > 0.0 [L268] 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; [L268] RET, EXPR __ieee754_atan2(y, x) [L268] double res = __ieee754_atan2(y, x); [L270] EXPR res == 0.0 && __signbit_double(res) == 0 [L270] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L271] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 18 SDslu, 133 SDs, 0 SdLazy, 148 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1615 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...