/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_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:12,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:12,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:12,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:12,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:12,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:12,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:12,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:12,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:12,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:12,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:12,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:12,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:12,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:12,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:12,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:12,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:12,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:12,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:12,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:12,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:12,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:12,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:12,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:12,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:12,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:12,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:12,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:12,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:12,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:12,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:12,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:12,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:12,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:12,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:12,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:12,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:12,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:12,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:12,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:12,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:12,524 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 04:47:12,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:12,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:12,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:12,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:12,568 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:12,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:12,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:12,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:12,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:12,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:12,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:12,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:12,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:12,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:12,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:12,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:12,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:12,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:12,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:12,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:12,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:12,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:12,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:12,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:12,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:12,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:12,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:12,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:12,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:12,574 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 04:47:12,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:12,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:12,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:12,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:12,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:12,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-10-14 04:47:12,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc24aab98/12218601fed14d4dafeb6d23b77d340b/FLAG5aec08d98 [2020-10-14 04:47:13,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:13,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-10-14 04:47:13,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc24aab98/12218601fed14d4dafeb6d23b77d340b/FLAG5aec08d98 [2020-10-14 04:47:13,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc24aab98/12218601fed14d4dafeb6d23b77d340b [2020-10-14 04:47:13,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:13,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:13,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:13,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:13,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:13,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:13" (1/1) ... [2020-10-14 04:47:13,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bab5c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:13, skipping insertion in model container [2020-10-14 04:47:13,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:13" (1/1) ... [2020-10-14 04:47:13,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:13,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:14,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:14,218 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:14,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:14,288 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:14,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14 WrapperNode [2020-10-14 04:47:14,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:14,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:14,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:14,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:14,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (1/1) ... [2020-10-14 04:47:14,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:14,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:14,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:14,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:14,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (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 04:47:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-14 04:47:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-14 04:47:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:47:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-14 04:47:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-14 04:47:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:15,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:15,061 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:47:15,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:15 BoogieIcfgContainer [2020-10-14 04:47:15,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:15,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:15,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:15,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:15,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:13" (1/3) ... [2020-10-14 04:47:15,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2855612b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:15, skipping insertion in model container [2020-10-14 04:47:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:14" (2/3) ... [2020-10-14 04:47:15,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2855612b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:15, skipping insertion in model container [2020-10-14 04:47:15,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:15" (3/3) ... [2020-10-14 04:47:15,075 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2020-10-14 04:47:15,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:15,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:15,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:15,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:15,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:15,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:15,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:15,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:15,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:15,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:15,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-14 04:47:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:47:15,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:15,170 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 04:47:15,171 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:15,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1778081115, now seen corresponding path program 1 times [2020-10-14 04:47:15,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:15,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989829527] [2020-10-14 04:47:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:15,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:47:15,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 04:47:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:15,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:47:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:47:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:15,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:15,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:15,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:47:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:47:15,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:15,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 04:47:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:47:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:15,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:15,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:47:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:15,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:47:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:15,758 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 04:47:15,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989829527] [2020-10-14 04:47:15,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:15,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:15,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982248094] [2020-10-14 04:47:15,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:15,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:15,786 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-10-14 04:47:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:16,105 INFO L93 Difference]: Finished difference Result 128 states and 210 transitions. [2020-10-14 04:47:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:47:16,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 04:47:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:16,120 INFO L225 Difference]: With dead ends: 128 [2020-10-14 04:47:16,120 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 04:47:16,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:47:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 04:47:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-14 04:47:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 04:47:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-10-14 04:47:16,173 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 22 [2020-10-14 04:47:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:16,174 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-10-14 04:47:16,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-10-14 04:47:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:47:16,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:16,176 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] [2020-10-14 04:47:16,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:16,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:16,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:16,177 INFO L82 PathProgramCache]: Analyzing trace with hash -943917416, now seen corresponding path program 1 times [2020-10-14 04:47:16,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:16,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451579074] [2020-10-14 04:47:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:16,253 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:16,254 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:16,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:16,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:16 BoogieIcfgContainer [2020-10-14 04:47:16,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:16,297 INFO L168 Benchmark]: Toolchain (without parser) took 2462.87 ms. Allocated memory was 147.3 MB in the beginning and 232.8 MB in the end (delta: 85.5 MB). Free memory was 102.2 MB in the beginning and 174.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:16,299 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:16,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.95 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 177.9 MB in the end (delta: -76.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:16,302 INFO L168 Benchmark]: Boogie Preprocessor took 59.26 ms. Allocated memory is still 203.9 MB. Free memory was 177.9 MB in the beginning and 175.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:16,303 INFO L168 Benchmark]: RCFGBuilder took 717.40 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 141.6 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:16,304 INFO L168 Benchmark]: TraceAbstraction took 1226.60 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 141.6 MB in the beginning and 174.1 MB in the end (delta: -32.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:47:16,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.95 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 177.9 MB in the end (delta: -76.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.26 ms. Allocated memory is still 203.9 MB. Free memory was 177.9 MB in the beginning and 175.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 717.40 ms. Allocated memory is still 203.9 MB. Free memory was 175.2 MB in the beginning and 141.6 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1226.60 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 141.6 MB in the beginning and 174.1 MB in the end (delta: -32.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 176]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L170] double x = -1.0 / 0.0; [L171] double y = __VERIFIER_nondet_double(); [L172] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L172] RET, EXPR fmod_double(x, y) [L172] double res = fmod_double(x, y); [L175] CALL, EXPR isnan_double(res) [L16] return x != x; [L175] RET, EXPR isnan_double(res) [L175] COND TRUE !isnan_double(res) [L176] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 8 SDslu, 79 SDs, 0 SdLazy, 95 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...