/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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 [2020-08-22 05:25:08,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:25:08,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:25:08,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:25:08,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:25:08,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:25:08,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:25:08,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:25:08,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:25:08,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:25:08,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:25:08,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:25:08,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:25:08,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:25:08,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:25:08,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:25:08,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:25:08,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:25:08,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:25:08,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:25:08,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:25:08,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:25:08,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:25:08,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:25:08,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:25:08,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:25:08,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:25:08,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:25:08,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:25:08,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:25:08,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:25:08,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:25:08,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:25:08,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:25:08,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:25:08,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:25:08,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:25:08,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:25:08,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:25:08,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:25:08,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:25:08,722 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 [2020-08-22 05:25:08,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:25:08,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:25:08,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:25:08,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:25:08,763 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:25:08,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:25:08,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:25:08,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:25:08,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:25:08,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:25:08,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:25:08,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:25:08,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:25:08,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:25:08,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:25:08,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:25:08,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:25:08,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:25:08,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:25:08,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:25:08,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:25:08,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:25:08,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:25:08,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:25:08,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:25:08,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:25:08,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:25:08,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:25:08,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:25:08,769 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:25:09,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:25:09,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:25:09,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:25:09,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:25:09,097 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:25:09,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 05:25:09,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5779816d4/871ac9b473644223b261726766e1c215/FLAG3d76683ef [2020-08-22 05:25:09,578 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:25:09,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 05:25:09,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5779816d4/871ac9b473644223b261726766e1c215/FLAG3d76683ef [2020-08-22 05:25:09,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5779816d4/871ac9b473644223b261726766e1c215 [2020-08-22 05:25:09,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:25:09,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:25:09,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:09,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:25:09,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:25:09,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:09" (1/1) ... [2020-08-22 05:25:09,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6128a388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:09, skipping insertion in model container [2020-08-22 05:25:09,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:09" (1/1) ... [2020-08-22 05:25:09,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:25:09,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:25:10,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:10,196 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:25:10,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:10,343 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:25:10,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10 WrapperNode [2020-08-22 05:25:10,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:10,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:25:10,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:25:10,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:25:10,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (1/1) ... [2020-08-22 05:25:10,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:25:10,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:25:10,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:25:10,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:25:10,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (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 [2020-08-22 05:25:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:25:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:25:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 05:25:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 05:25:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:25:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:25:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 05:25:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:25:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 05:25:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:25:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:25:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:25:10,814 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:25:10,814 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 05:25:10,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:10 BoogieIcfgContainer [2020-08-22 05:25:10,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:25:10,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:25:10,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:25:10,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:25:10,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:25:09" (1/3) ... [2020-08-22 05:25:10,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a2b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:10, skipping insertion in model container [2020-08-22 05:25:10,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:10" (2/3) ... [2020-08-22 05:25:10,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414a2b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:10, skipping insertion in model container [2020-08-22 05:25:10,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:10" (3/3) ... [2020-08-22 05:25:10,830 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-22 05:25:10,842 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:25:10,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:25:10,882 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:25:10,938 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:25:10,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:25:10,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:25:10,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:25:10,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:25:10,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:25:10,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:25:10,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:25:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 05:25:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 05:25:10,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:10,970 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] [2020-08-22 05:25:10,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-22 05:25:10,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:10,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259164079] [2020-08-22 05:25:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:25:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:25:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:25:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:25:11,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259164079] [2020-08-22 05:25:11,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:25:11,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:25:11,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474281004] [2020-08-22 05:25:11,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:25:11,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:25:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:25:11,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:25:11,253 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 05:25:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:25:11,517 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 05:25:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:25:11,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 05:25:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:25:11,531 INFO L225 Difference]: With dead ends: 86 [2020-08-22 05:25:11,532 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 05:25:11,536 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 [2020-08-22 05:25:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 05:25:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 05:25:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 05:25:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 05:25:11,583 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 05:25:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:25:11,584 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 05:25:11,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:25:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 05:25:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 05:25:11,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:11,586 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] [2020-08-22 05:25:11,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:25:11,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-22 05:25:11,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:11,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938426832] [2020-08-22 05:25:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:25:11,641 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:25:11,642 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:25:11,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:25:11,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:25:11 BoogieIcfgContainer [2020-08-22 05:25:11,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:25:11,697 INFO L168 Benchmark]: Toolchain (without parser) took 1742.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 109.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,698 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.78 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 181.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,704 INFO L168 Benchmark]: Boogie Preprocessor took 55.62 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,707 INFO L168 Benchmark]: RCFGBuilder took 421.77 ms. Allocated memory is still 203.9 MB. Free memory was 179.7 MB in the beginning and 157.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,707 INFO L168 Benchmark]: TraceAbstraction took 868.45 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 109.0 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:11,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.78 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 181.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.62 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.77 ms. Allocated memory is still 203.9 MB. Free memory was 179.7 MB in the beginning and 157.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 868.45 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 109.0 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 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: 0.7s, 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...