/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=NARROWEST --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 21:19:18,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:19:18,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:19:18,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:19:18,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:19:18,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:19:18,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:19:18,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:19:18,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:19:18,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:19:18,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:19:18,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:19:18,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:19:18,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:19:18,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:19:18,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:19:18,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:19:18,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:19:18,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:19:18,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:19:18,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:19:18,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:19:18,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:19:18,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:19:18,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:19:18,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:19:18,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:19:18,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:19:18,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:19:18,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:19:18,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:19:18,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:19:18,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:19:18,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:19:18,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:19:18,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:19:18,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:19:18,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:19:18,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:19:18,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:19:18,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:19:18,924 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 21:19:18,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:19:18,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:19:18,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:19:18,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:19:18,947 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:19:18,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:19:18,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:19:18,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:19:18,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:19:18,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:19:18,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:19:18,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:19:18,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:19:18,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:19:18,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:19:18,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:19:18,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:19:18,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:19:18,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:19:18,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:19:18,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:19:18,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:19:18,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:19:18,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:19:18,952 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:19:19,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:19:19,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:19:19,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:19:19,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:19:19,305 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:19:19,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 21:19:19,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/217facad1/8c57f257df3944b89a14080b9a0a5590/FLAG9308ea167 [2020-08-21 21:19:19,819 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:19:19,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-21 21:19:19,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/217facad1/8c57f257df3944b89a14080b9a0a5590/FLAG9308ea167 [2020-08-21 21:19:20,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/217facad1/8c57f257df3944b89a14080b9a0a5590 [2020-08-21 21:19:20,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:19:20,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:19:20,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:20,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:19:20,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:19:20,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20, skipping insertion in model container [2020-08-21 21:19:20,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:19:20,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:19:20,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:20,448 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:19:20,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:19:20,593 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:19:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20 WrapperNode [2020-08-21 21:19:20,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:19:20,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:19:20,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:19:20,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:19:20,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (1/1) ... [2020-08-21 21:19:20,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:19:20,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:19:20,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:19:20,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:19:20,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (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 21:19:20,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:19:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:19:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 21:19:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 21:19:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:19:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:19:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 21:19:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 21:19:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:19:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 21:19:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:19:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:19:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:19:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 21:19:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:19:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:19:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:19:21,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:19:21,056 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 21:19:21,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:21 BoogieIcfgContainer [2020-08-21 21:19:21,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:19:21,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:19:21,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:19:21,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:19:21,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:19:20" (1/3) ... [2020-08-21 21:19:21,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:21, skipping insertion in model container [2020-08-21 21:19:21,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:19:20" (2/3) ... [2020-08-21 21:19:21,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c111294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:19:21, skipping insertion in model container [2020-08-21 21:19:21,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:19:21" (3/3) ... [2020-08-21 21:19:21,070 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-21 21:19:21,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:19:21,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:19:21,108 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:19:21,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:19:21,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:19:21,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:19:21,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:19:21,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:19:21,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:19:21,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:19:21,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:19:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 21:19:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 21:19:21,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:21,194 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 21:19:21,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:21,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-21 21:19:21,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:21,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341698278] [2020-08-21 21:19:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:19:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:19:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:19:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:19:21,451 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 21:19:21,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341698278] [2020-08-21 21:19:21,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:19:21,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:19:21,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727823547] [2020-08-21 21:19:21,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:19:21,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:19:21,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:19:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:19:21,495 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 21:19:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:19:21,770 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 21:19:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:19:21,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 21:19:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:19:21,784 INFO L225 Difference]: With dead ends: 86 [2020-08-21 21:19:21,784 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 21:19:21,788 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 21:19:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 21:19:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 21:19:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 21:19:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 21:19:21,833 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 21:19:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:19:21,834 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 21:19:21,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:19:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 21:19:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 21:19:21,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:19:21,836 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 21:19:21,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:19:21,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:19:21,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:19:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-21 21:19:21,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:19:21,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309173279] [2020-08-21 21:19:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:19:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:19:21,903 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:19:21,903 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:19:21,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:19:21,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:19:21 BoogieIcfgContainer [2020-08-21 21:19:21,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:19:21,936 INFO L168 Benchmark]: Toolchain (without parser) took 1726.16 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 107.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:21,937 INFO L168 Benchmark]: CDTParser took 0.22 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 21:19:21,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.32 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 180.8 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:21,939 INFO L168 Benchmark]: Boogie Preprocessor took 46.16 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:21,940 INFO L168 Benchmark]: RCFGBuilder took 420.36 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:21,941 INFO L168 Benchmark]: TraceAbstraction took 870.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 107.7 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:19:21,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 384.32 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 180.8 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.16 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.36 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 870.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 107.7 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...