/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:28:02,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:28:02,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:28:02,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 07:28:02,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 07:28:02,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 07:28:02,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 07:28:02,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 07:28:02,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 07:28:02,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 07:28:02,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 07:28:02,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 07:28:02,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:28:02,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:28:02,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:28:02,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:28:02,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:28:02,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:28:02,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:28:02,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:28:02,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:28:02,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:28:02,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:28:02,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:28:02,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:28:02,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 07:28:02,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 07:28:02,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 07:28:02,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 07:28:02,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 07:28:02,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 07:28:02,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 07:28:02,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 07:28:02,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:28:02,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:28:02,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:28:02,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:28:02,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:28:02,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:28:02,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:28:02,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:28:02,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:28:02,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:28:02,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:28:02,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:28:02,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:28:02,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:28:02,356 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:28:02,356 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:28:02,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:28:02,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:28:02,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:28:02,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:28:02,909 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:28:02,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-01 07:28:02,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3881943d8/5e9f26b90de1481aa31435f163f09c10/FLAG0e0cda3cd [2021-05-01 07:28:03,711 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:28:03,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-01 07:28:03,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3881943d8/5e9f26b90de1481aa31435f163f09c10/FLAG0e0cda3cd [2021-05-01 07:28:04,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3881943d8/5e9f26b90de1481aa31435f163f09c10 [2021-05-01 07:28:04,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:28:04,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:28:04,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:28:04,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:28:04,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:28:04,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdb9b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04, skipping insertion in model container [2021-05-01 07:28:04,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:28:04,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:28:04,349 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c[11322,11335] [2021-05-01 07:28:04,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:28:04,420 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:28:04,524 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c[11322,11335] [2021-05-01 07:28:04,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:28:04,551 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:28:04,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04 WrapperNode [2021-05-01 07:28:04,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:28:04,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:28:04,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:28:04,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:28:04,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... [2021-05-01 07:28:04,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:28:04,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:28:04,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:28:04,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:28:04,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-01 07:28:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-01 07:28:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-01 07:28:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-01 07:28:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-01 07:28:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-01 07:28:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-01 07:28:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-01 07:28:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:28:04,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:28:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:28:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:28:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:28:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:28:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:28:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-01 07:28:04,794 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-01 07:28:04,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:28:05,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:28:05,944 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-01 07:28:05,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:28:05 BoogieIcfgContainer [2021-05-01 07:28:05,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:28:05,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:28:05,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:28:05,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:28:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:28:04" (1/3) ... [2021-05-01 07:28:05,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20745555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:28:05, skipping insertion in model container [2021-05-01 07:28:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:28:04" (2/3) ... [2021-05-01 07:28:05,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20745555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:28:05, skipping insertion in model container [2021-05-01 07:28:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:28:05" (3/3) ... [2021-05-01 07:28:05,956 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2021-05-01 07:28:05,962 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:28:05,970 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:28:05,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:28:06,016 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:28:06,016 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:28:06,016 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:28:06,016 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:28:06,016 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:28:06,017 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:28:06,017 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:28:06,017 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:28:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-01 07:28:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:28:06,063 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:28:06,064 INFO L519 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] [2021-05-01 07:28:06,064 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:28:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:28:06,072 INFO L82 PathProgramCache]: Analyzing trace with hash -540283313, now seen corresponding path program 1 times [2021-05-01 07:28:06,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:28:06,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420112479] [2021-05-01 07:28:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:28:06,205 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:28:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:06,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,840 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-01 07:28:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:28:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:06,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:28:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:06,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-01 07:28:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:28:06,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:28:06,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:28:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:28:06,979 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:28:06,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420112479] [2021-05-01 07:28:06,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1420112479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:28:06,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:28:06,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:28:06,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703215288] [2021-05-01 07:28:06,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 07:28:06,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:28:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 07:28:07,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 07:28:07,018 INFO L87 Difference]: Start difference. First operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 07:28:07,224 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-01 07:28:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:28:07,851 INFO L93 Difference]: Finished difference Result 243 states and 363 transitions. [2021-05-01 07:28:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 07:28:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-05-01 07:28:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:28:07,862 INFO L225 Difference]: With dead ends: 243 [2021-05-01 07:28:07,862 INFO L226 Difference]: Without dead ends: 119 [2021-05-01 07:28:07,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 454.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:28:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-01 07:28:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-01 07:28:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 95 states have internal predecessors, (137), 16 states have call successors, (16), 11 states have call predecessors, (16), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-01 07:28:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2021-05-01 07:28:07,956 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2021-05-01 07:28:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:28:07,956 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2021-05-01 07:28:07,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 07:28:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2021-05-01 07:28:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:28:07,960 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:28:07,960 INFO L519 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] [2021-05-01 07:28:07,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:28:07,960 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:28:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:28:07,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1349629939, now seen corresponding path program 1 times [2021-05-01 07:28:07,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:28:07,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841892494] [2021-05-01 07:28:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:28:07,965 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:28:07,990 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:28:07,990 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:28:07,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:28:08,014 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:28:08,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:28:08 BoogieIcfgContainer [2021-05-01 07:28:08,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:28:08,017 INFO L168 Benchmark]: Toolchain (without parser) took 4001.86 ms. Allocated memory was 160.4 MB in the beginning and 225.4 MB in the end (delta: 65.0 MB). Free memory was 124.1 MB in the beginning and 185.1 MB in the end (delta: -60.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2021-05-01 07:28:08,017 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 160.4 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:28:08,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.26 ms. Allocated memory is still 160.4 MB. Free memory was 124.1 MB in the beginning and 138.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-05-01 07:28:08,018 INFO L168 Benchmark]: Boogie Preprocessor took 117.13 ms. Allocated memory is still 160.4 MB. Free memory was 138.1 MB in the beginning and 134.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:28:08,019 INFO L168 Benchmark]: RCFGBuilder took 1272.53 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 73.7 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-05-01 07:28:08,019 INFO L168 Benchmark]: TraceAbstraction took 2066.65 ms. Allocated memory was 160.4 MB in the beginning and 225.4 MB in the end (delta: 65.0 MB). Free memory was 73.1 MB in the beginning and 185.6 MB in the end (delta: -112.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:28:08,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 160.4 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 531.26 ms. Allocated memory is still 160.4 MB. Free memory was 124.1 MB in the beginning and 138.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.13 ms. Allocated memory is still 160.4 MB. Free memory was 138.1 MB in the beginning and 134.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1272.53 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 73.7 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2066.65 ms. Allocated memory was 160.4 MB in the beginning and 225.4 MB in the end (delta: 65.0 MB). Free memory was 73.1 MB in the beginning and 185.6 MB in the end (delta: -112.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 463]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L181] unsigned int Id_MCDC_104; [L182] UINT16 Id_MCDC_105; [L183] UINT16 Id_MCDC_106; [L184] Od_IndexTable* Id_MCDC_107; [L185] Od_IndexTable* Id_MCDC_108; [L186] Od_IndexTable* Id_MCDC_109; [L187] Od_IndexTable* Id_MCDC_110; [L188] Od_IndexTable* Id_MCDC_111; [L189] UINT32 Id_MCDC_112 [4]; [L190] CanOpenNode Id_MCDC_113; [L191] UINT32 Id_MCDC_114=0; [L429] void * Id_MCDC_143; [L430] void * Id_MCDC_144; [L431] void * Id_MCDC_145; [L432] void * Id_MCDC_146; [L433] void * Id_MCDC_147; [L434] void * Id_MCDC_148; [L435] int Id_MCDC_149; [L436] int Id_MCDC_150; [L437] int Id_MCDC_151; [L438] int Id_MCDC_152; [L439] int Id_MCDC_153; [L440] int Id_MCDC_154; [L441] int Id_MCDC_155; [L442] short Id_MCDC_156; [L443] short Id_MCDC_157; [L444] FILE* Id_MCDC_158; [L445] unsigned short Id_MCDC_159; [L446] unsigned short Id_MCDC_160; [L447] unsigned short Id_MCDC_161=0; [L448] unsigned short Id_MCDC_162=0; [L449] char Id_MCDC_163; [L450] char Id_MCDC_164; [L451] Id_MCDC_158 = fopen("in.eds", "r") [L452] COND FALSE !(Id_MCDC_158 == (( void * ) 0)) [L457] CALL Id_MCDC_100() [L422] int Id_MCDC_141; [L423] void * Id_MCDC_142; [L424] CALL Id_MCDC_99() [L402] CHAR Id_MCDC_139 [4]={0, 0, 0, 0}; [L403] UINT32 Id_MCDC_140=0; [L404] Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L405] CALL Id_MCDC_97() [L333] UINT32 Id_MCDC_123; [L334] UINT32 Id_MCDC_124; [L335] UINT32 Id_MCDC_125; [L336] UINT32 Id_MCDC_126; [L337] UINT32 Id_MCDC_127; [L338] UINT32 Id_MCDC_128=0x00; [L339] UINT16 Id_MCDC_129; [L340] UINT32 Id_MCDC_130=0x00; [L341] UINT32 Id_MCDC_131=0x00; [L342] UINT8 Id_MCDC_35=0; [L343] UINT8 Id_MCDC_132=0; [L344] UINT8 Id_MCDC_36=0; [L345] UINT8 Id_MCDC_133=0; [L346] UINT8 Id_MCDC_134=0x00; [L347] INT32 Id_MCDC_135; [L348] void * Id_MCDC_136; [L349] UINT32* Id_MCDC_137; [L350] UINT16 Id_MCDC_138; [L351] Id_MCDC_123 = 0x1800 [L352] Id_MCDC_132 = 0 [L352] COND FALSE !(Id_MCDC_132 < 4) [L356] COND FALSE !(Id_MCDC_123 <= 0x1803) [L398] return 0x00; [L338] UINT32 Id_MCDC_128=0x00; [L398] return 0x00; [L340] UINT32 Id_MCDC_130=0x00; [L398] return 0x00; [L341] UINT32 Id_MCDC_131=0x00; [L398] return 0x00; [L398] return 0x00; [L398] return 0x00; [L405] RET Id_MCDC_97() [L406] Id_MCDC_140 = 0 [L406] COND FALSE !(Id_MCDC_140 < 4) [L417] CALL Id_MCDC_95(4, Id_MCDC_139) [L282] UINT32 Id_MCDC_121=0; [L283] UINT32 Id_MCDC_122=0; [L284] COND FALSE !(Id_MCDC_93 < 2) [L288] COND FALSE !(Id_MCDC_93 != 2) [L294] EXPR Id_MCDC_94[1] [L294] Id_MCDC_122 = Id_MCDC_94[1] [L296] EXPR Id_MCDC_94[0] [L296] CALL Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L251] UINT32 Id_MCDC_117=0; [L252] UINT32 Id_MCDC_118=0; [L253] UINT32 Id_MCDC_119=1; [L254] UINT32 Id_MCDC_120=0; [L255] COND TRUE Id_MCDC_90 > Id_MCDC_91 [L257] Id_MCDC_117 = Id_MCDC_90 [L258] Id_MCDC_118 = Id_MCDC_91 [L270] COND TRUE Id_MCDC_119 != 0 [L272] CALL avoid_zero(Id_MCDC_118 != 0) [L11] COND FALSE !(!y) [L272] RET avoid_zero(Id_MCDC_118 != 0) [L273] Id_MCDC_120 = ( UINT32 ) (Id_MCDC_117 / Id_MCDC_118) [L274] CALL __VERIFIER_assert(( long long ) (Id_MCDC_120 * Id_MCDC_118) >= 0 && ( long long ) (Id_MCDC_120 * Id_MCDC_118) <= 4294967295) [L461] COND TRUE ! (Id_MCDC_103) [L463] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 135 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1982.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 33.9ms, AutomataDifference: 878.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 204 SDslu, 29 SDs, 0 SdLazy, 107 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 405.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 454.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 73.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...