/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=LOWLEXORDER --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_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:05:41,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:05:41,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:05:41,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:05:41,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:05:41,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:05:41,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:05:41,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:05:41,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:05:41,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:05:41,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:05:41,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:05:41,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:05:41,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:05:41,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:05:41,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:05:41,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:05:41,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:05:41,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:05:41,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:05:41,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:05:41,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:05:41,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:05:41,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:05:41,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:05:41,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:05:41,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:05:41,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:05:41,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:05:41,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:05:41,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:05:41,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:05:41,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:05:41,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:05:41,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:05:41,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:05:41,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:05:41,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:05:41,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:05:41,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:05:41,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:05:41,969 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 18:05:42,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:05:42,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:05:42,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:05:42,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:05:42,019 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:05:42,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:05:42,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:05:42,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:05:42,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:05:42,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:05:42,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:05:42,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:05:42,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:05:42,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:05:42,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:05:42,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:05:42,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:05:42,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:05:42,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:05:42,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:05:42,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:05:42,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:42,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:05:42,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:05:42,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:05:42,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:05:42,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:05:42,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:05:42,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:05:42,026 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:05:42,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:05:42,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:05:42,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:05:42,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:05:42,403 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:05:42,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-08-21 18:05:42,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d390356c/5eb03abba5d14c2fbe82edecee1da6e6/FLAG65369f0ad [2020-08-21 18:05:42,968 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:05:42,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-08-21 18:05:42,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d390356c/5eb03abba5d14c2fbe82edecee1da6e6/FLAG65369f0ad [2020-08-21 18:05:43,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d390356c/5eb03abba5d14c2fbe82edecee1da6e6 [2020-08-21 18:05:43,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:05:43,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:05:43,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:43,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:05:43,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:05:43,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4603aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43, skipping insertion in model container [2020-08-21 18:05:43,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:05:43,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:05:43,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:43,555 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:05:43,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:43,703 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:05:43,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43 WrapperNode [2020-08-21 18:05:43,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:43,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:05:43,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:05:43,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:05:43,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (1/1) ... [2020-08-21 18:05:43,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:05:43,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:05:43,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:05:43,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:05:43,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (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 18:05:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:05:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:05:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 18:05:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-21 18:05:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:05:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:05:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 18:05:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:05:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-21 18:05:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:05:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:05:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:05:44,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:05:44,322 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 18:05:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:44 BoogieIcfgContainer [2020-08-21 18:05:44,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:05:44,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:05:44,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:05:44,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:05:44,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:05:43" (1/3) ... [2020-08-21 18:05:44,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cbe3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:44, skipping insertion in model container [2020-08-21 18:05:44,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:43" (2/3) ... [2020-08-21 18:05:44,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cbe3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:44, skipping insertion in model container [2020-08-21 18:05:44,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:44" (3/3) ... [2020-08-21 18:05:44,335 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052b.c [2020-08-21 18:05:44,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:05:44,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:05:44,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:05:44,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:05:44,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:05:44,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:05:44,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:05:44,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:05:44,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:05:44,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:05:44,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:05:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-08-21 18:05:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:05:44,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:44,429 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, 1] [2020-08-21 18:05:44,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:44,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2000118749, now seen corresponding path program 1 times [2020-08-21 18:05:44,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:44,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803774743] [2020-08-21 18:05:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:44,673 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 18:05:44,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803774743] [2020-08-21 18:05:44,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:44,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:05:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340006602] [2020-08-21 18:05:44,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:05:44,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:05:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:44,704 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-08-21 18:05:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:45,052 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-08-21 18:05:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:05:45,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 18:05:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:45,074 INFO L225 Difference]: With dead ends: 92 [2020-08-21 18:05:45,074 INFO L226 Difference]: Without dead ends: 46 [2020-08-21 18:05:45,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 18:05:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-21 18:05:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-08-21 18:05:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-21 18:05:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-08-21 18:05:45,125 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 25 [2020-08-21 18:05:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:45,126 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-08-21 18:05:45,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:05:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-08-21 18:05:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 18:05:45,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:45,128 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, 1, 1, 1] [2020-08-21 18:05:45,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:05:45,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash 784957124, now seen corresponding path program 1 times [2020-08-21 18:05:45,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:45,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376481710] [2020-08-21 18:05:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:05:45,254 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:05:45,255 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:05:45,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:05:45,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:05:45 BoogieIcfgContainer [2020-08-21 18:05:45,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:05:45,285 INFO L168 Benchmark]: Toolchain (without parser) took 1960.18 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 102.7 MB in the beginning and 100.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:45,286 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:45,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.12 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 179.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:45,288 INFO L168 Benchmark]: Boogie Preprocessor took 49.02 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:45,289 INFO L168 Benchmark]: RCFGBuilder took 573.05 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 152.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:45,290 INFO L168 Benchmark]: TraceAbstraction took 953.37 ms. Allocated memory is still 202.4 MB. Free memory was 152.3 MB in the beginning and 100.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:45,294 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 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.12 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 179.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.02 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.05 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 152.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 953.37 ms. Allocated memory is still 202.4 MB. Free memory was 152.3 MB in the beginning and 100.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: 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 89, overapproximation of someBinaryArithmeticDOUBLEoperation at line 101, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L101] double x = -1.0 / 0.0; [L102] 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; [L102] RET, EXPR floor_double(x) [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) [L81] __int32_t hx, lx; [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L105] RET, EXPR isinf_double(res) [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 53 SDslu, 5 SDs, 0 SdLazy, 63 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 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...