/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:17:29,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:29,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:29,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:29,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:29,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:29,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:29,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:29,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:29,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:29,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:29,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:29,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:29,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:29,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:29,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:29,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:29,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:29,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:29,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:29,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:29,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:29,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:29,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:29,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:29,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:29,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:29,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:29,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:29,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:17:29,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:17:29,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:17:29,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:17:29,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:17:29,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:17:29,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:17:29,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:17:29,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:17:29,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:29,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:29,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:29,459 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 [2020-08-21 17:17:29,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:29,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:29,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:29,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:29,483 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:29,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:29,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:29,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:29,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:29,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:29,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:29,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:29,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:29,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:29,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:29,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:29,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:29,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:29,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:29,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:29,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:29,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:29,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:29,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:29,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:29,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:29,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:29,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:29,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:29,492 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:29,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:29,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:29,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:29,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:29,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:29,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 17:17:29,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348fcd726/e8da1e56b16f410ea7a3f6bec3b18ada/FLAG6f7bc65ae [2020-08-21 17:17:30,330 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:30,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 17:17:30,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348fcd726/e8da1e56b16f410ea7a3f6bec3b18ada/FLAG6f7bc65ae [2020-08-21 17:17:30,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/348fcd726/e8da1e56b16f410ea7a3f6bec3b18ada [2020-08-21 17:17:30,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:30,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:30,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:30,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:30,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:30,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:30" (1/1) ... [2020-08-21 17:17:30,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313262ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:30, skipping insertion in model container [2020-08-21 17:17:30,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:30" (1/1) ... [2020-08-21 17:17:30,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:30,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:31,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:31,100 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:31,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:31,235 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:31,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31 WrapperNode [2020-08-21 17:17:31,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:31,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:31,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:31,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:31,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (1/1) ... [2020-08-21 17:17:31,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:31,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:31,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:31,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:31,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (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 [2020-08-21 17:17:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 17:17:31,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 17:17:31,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 17:17:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 17:17:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:31,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:31,703 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 17:17:31,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:31 BoogieIcfgContainer [2020-08-21 17:17:31,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:31,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:31,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:31,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:31,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:30" (1/3) ... [2020-08-21 17:17:31,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61981862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:31, skipping insertion in model container [2020-08-21 17:17:31,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:31" (2/3) ... [2020-08-21 17:17:31,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61981862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:31, skipping insertion in model container [2020-08-21 17:17:31,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:31" (3/3) ... [2020-08-21 17:17:31,727 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-21 17:17:31,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:31,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:31,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:31,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:31,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:31,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:31,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:31,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:31,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:31,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:31,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 17:17:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 17:17:31,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:31,843 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] [2020-08-21 17:17:31,843 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-21 17:17:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:31,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131865632] [2020-08-21 17:17:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:17:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:32,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131865632] [2020-08-21 17:17:32,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:32,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:32,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223596144] [2020-08-21 17:17:32,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:32,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:32,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:32,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:32,131 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 17:17:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:32,352 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 17:17:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:17:32,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 17:17:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:32,366 INFO L225 Difference]: With dead ends: 86 [2020-08-21 17:17:32,367 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 17:17:32,370 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 [2020-08-21 17:17:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 17:17:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 17:17:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 17:17:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 17:17:32,414 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 17:17:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:32,414 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 17:17:32,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 17:17:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 17:17:32,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:32,416 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] [2020-08-21 17:17:32,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:32,417 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-21 17:17:32,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:32,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699713876] [2020-08-21 17:17:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:32,492 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:32,492 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:32,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:32,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:32 BoogieIcfgContainer [2020-08-21 17:17:32,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:32,528 INFO L168 Benchmark]: Toolchain (without parser) took 1759.13 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 102.5 MB in the beginning and 104.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,530 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.14 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 102.1 MB in the beginning and 177.9 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,532 INFO L168 Benchmark]: Boogie Preprocessor took 43.81 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 175.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,533 INFO L168 Benchmark]: RCFGBuilder took 427.90 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 153.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,534 INFO L168 Benchmark]: TraceAbstraction took 815.57 ms. Allocated memory is still 199.8 MB. Free memory was 152.6 MB in the beginning and 104.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:32,538 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 467.14 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 102.1 MB in the beginning and 177.9 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.81 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 175.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.90 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 153.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 815.57 ms. Allocated memory is still 199.8 MB. Free memory was 152.6 MB in the beginning and 104.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 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=47occurred 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, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...