/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:04,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:04,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:04,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:04,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:04,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:04,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:04,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:04,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:04,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:04,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:04,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:04,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:04,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:04,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:04,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:04,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:04,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:04,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:04,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:04,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:04,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:04,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:04,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:04,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:04,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:04,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:04,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:04,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:04,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:04,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:04,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:04,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:04,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:04,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:04,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:04,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:04,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:04,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:04,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:04,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:04,982 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 16:29:05,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:05,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:05,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:05,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:05,005 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:05,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:05,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:05,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:05,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:05,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:05,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:05,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:05,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:05,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:05,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:05,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:05,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:05,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:05,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:05,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:05,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:05,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:05,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:05,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:05,010 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:05,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:05,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:05,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:05,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:05,331 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:05,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 16:29:05,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ccd388c9/76fe283cc3774aebb9040f0a4e9ea4d2/FLAG82b5871ef [2020-08-21 16:29:05,821 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:05,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 16:29:05,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ccd388c9/76fe283cc3774aebb9040f0a4e9ea4d2/FLAG82b5871ef [2020-08-21 16:29:06,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ccd388c9/76fe283cc3774aebb9040f0a4e9ea4d2 [2020-08-21 16:29:06,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:06,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:06,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:06,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:06,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:06,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce2121d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06, skipping insertion in model container [2020-08-21 16:29:06,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:06,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:06,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:06,471 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:06,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:06,638 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06 WrapperNode [2020-08-21 16:29:06,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:06,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:06,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:06,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:06,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (1/1) ... [2020-08-21 16:29:06,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:06,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:06,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:06,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:06,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (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 16:29:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 16:29:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 16:29:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 16:29:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 16:29:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:07,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:07,153 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 16:29:07,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:07 BoogieIcfgContainer [2020-08-21 16:29:07,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:07,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:07,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:07,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:07,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:06" (1/3) ... [2020-08-21 16:29:07,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c09750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:07, skipping insertion in model container [2020-08-21 16:29:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:06" (2/3) ... [2020-08-21 16:29:07,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c09750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:07, skipping insertion in model container [2020-08-21 16:29:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:07" (3/3) ... [2020-08-21 16:29:07,165 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-21 16:29:07,176 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:07,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:07,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:07,218 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:07,219 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:07,219 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:07,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:07,219 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:07,219 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:07,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:07,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 16:29:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 16:29:07,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:07,244 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 16:29:07,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-21 16:29:07,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:07,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507684746] [2020-08-21 16:29:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:29:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:07,496 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 16:29:07,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507684746] [2020-08-21 16:29:07,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:07,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:07,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226877265] [2020-08-21 16:29:07,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:07,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:07,526 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 16:29:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:07,769 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 16:29:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:29:07,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 16:29:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:07,784 INFO L225 Difference]: With dead ends: 86 [2020-08-21 16:29:07,785 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 16:29:07,789 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 16:29:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 16:29:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 16:29:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 16:29:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 16:29:07,837 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 16:29:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:07,838 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 16:29:07,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 16:29:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 16:29:07,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:07,840 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 16:29:07,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:07,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-21 16:29:07,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:07,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916004813] [2020-08-21 16:29:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:07,893 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:07,893 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:07,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:07,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:07 BoogieIcfgContainer [2020-08-21 16:29:07,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:07,922 INFO L168 Benchmark]: Toolchain (without parser) took 1704.36 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 103.6 MB in the beginning and 109.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:07,923 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:29:07,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.70 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 103.4 MB in the beginning and 182.4 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:07,926 INFO L168 Benchmark]: Boogie Preprocessor took 44.49 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:07,927 INFO L168 Benchmark]: RCFGBuilder took 473.38 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 158.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:07,927 INFO L168 Benchmark]: TraceAbstraction took 761.17 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 109.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:07,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.70 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 103.4 MB in the beginning and 182.4 MB in the end (delta: -79.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.49 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.38 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 158.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 761.17 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 109.5 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __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...