./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/addsub_double_exact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4d7a62ffde252cff873ff489678769664732fba2c78998e7abea39f2d3f98ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:32:06,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:32:06,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:32:06,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:32:06,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:32:06,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:32:06,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:32:06,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:32:06,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:32:06,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:32:06,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:32:06,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:32:06,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:32:06,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:32:06,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:32:06,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:32:06,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:32:06,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:32:06,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:32:06,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:32:06,878 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:32:06,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:32:06,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:32:06,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:32:06,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:32:06,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:32:06,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:32:06,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:32:06,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:32:06,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:32:06,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:32:06,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:32:06,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:32:06,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:32:06,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:32:06,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:32:06,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:32:06,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:32:06,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:32:06,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:32:06,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:32:06,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:32:06,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:32:06,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:32:06,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:32:06,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:32:06,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:32:06,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:32:06,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:32:06,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:32:06,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:32:06,940 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:32:06,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:32:06,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:32:06,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:32:06,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:32:06,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:32:06,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:32:06,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:32:06,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:32:06,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:32:06,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:32:06,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:32:06,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:32:06,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:32:06,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:32:06,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:32:06,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:32:06,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:32:06,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:32:06,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:32:06,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:32:06,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:32:06,945 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:32:06,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:32:06,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:32:06,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4d7a62ffde252cff873ff489678769664732fba2c78998e7abea39f2d3f98ac [2022-07-19 13:32:07,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:32:07,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:32:07,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:32:07,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:32:07,215 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:32:07,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2022-07-19 13:32:07,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156c2a720/0bad9b25881d457d811af4ae82837dd2/FLAG19f95b09f [2022-07-19 13:32:07,643 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:32:07,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2022-07-19 13:32:07,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156c2a720/0bad9b25881d457d811af4ae82837dd2/FLAG19f95b09f [2022-07-19 13:32:07,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/156c2a720/0bad9b25881d457d811af4ae82837dd2 [2022-07-19 13:32:07,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:32:07,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:32:07,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:32:07,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:32:07,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:32:07,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b43d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07, skipping insertion in model container [2022-07-19 13:32:07,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:32:07,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:32:07,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2022-07-19 13:32:07,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:32:07,855 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:32:07,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2022-07-19 13:32:07,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:32:07,877 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:32:07,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07 WrapperNode [2022-07-19 13:32:07,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:32:07,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:32:07,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:32:07,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:32:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,903 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-07-19 13:32:07,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:32:07,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:32:07,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:32:07,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:32:07,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:32:07,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:32:07,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:32:07,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:32:07,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (1/1) ... [2022-07-19 13:32:07,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:32:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:32:07,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:32:07,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:32:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:32:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:32:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:32:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:32:08,058 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:32:08,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:32:08,150 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:32:08,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:32:08,155 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:32:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:08 BoogieIcfgContainer [2022-07-19 13:32:08,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:32:08,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:32:08,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:32:08,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:32:08,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:32:07" (1/3) ... [2022-07-19 13:32:08,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:32:08, skipping insertion in model container [2022-07-19 13:32:08,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:07" (2/3) ... [2022-07-19 13:32:08,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:32:08, skipping insertion in model container [2022-07-19 13:32:08,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:08" (3/3) ... [2022-07-19 13:32:08,163 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2022-07-19 13:32:08,174 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:32:08,175 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:32:08,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:32:08,231 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f0b0303, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13a9a9a2 [2022-07-19 13:32:08,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:32:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:32:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:32:08,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:32:08,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:32:08,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:32:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:32:08,250 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-07-19 13:32:08,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:32:08,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034589888] [2022-07-19 13:32:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:32:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:32:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:32:08,329 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:32:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:32:08,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:32:08,366 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:32:08,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:32:08,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:32:08,372 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:32:08,376 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:32:08,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:32:08 BoogieIcfgContainer [2022-07-19 13:32:08,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:32:08,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:32:08,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:32:08,398 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:32:08,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:08" (3/4) ... [2022-07-19 13:32:08,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:32:08,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:32:08,402 INFO L158 Benchmark]: Toolchain (without parser) took 736.68ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 54.5MB in the end (delta: 19.0MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,403 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:08,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.26ms. Allocated memory is still 102.8MB. Free memory was 73.3MB in the beginning and 78.9MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.48ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,405 INFO L158 Benchmark]: Boogie Preprocessor took 23.46ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:08,409 INFO L158 Benchmark]: RCFGBuilder took 227.40ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 68.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,410 INFO L158 Benchmark]: TraceAbstraction took 236.58ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 54.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,411 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.5MB in the end (delta: 385.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:32:08,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.26ms. Allocated memory is still 102.8MB. Free memory was 73.3MB in the beginning and 78.9MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.48ms. Allocated memory is still 102.8MB. Free memory was 78.9MB in the beginning and 77.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.46ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 227.40ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 68.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 236.58ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 54.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 102.8MB. Free memory was 54.9MB in the beginning and 54.5MB in the end (delta: 385.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 13. Possible FailurePath: [L10] double x, y, z, r; [L12] x = 1e8 [L13] y = x + 1 [L14] z = x - 1 [L15] r = y - z [L16] CALL __VERIFIER_assert(r == 2.) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-07-19 13:32:08,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/addsub_double_exact.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4d7a62ffde252cff873ff489678769664732fba2c78998e7abea39f2d3f98ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:32:10,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:32:10,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:32:10,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:32:10,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:32:10,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:32:10,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:32:10,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:32:10,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:32:10,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:32:10,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:32:10,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:32:10,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:32:10,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:32:10,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:32:10,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:32:10,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:32:10,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:32:10,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:32:10,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:32:10,558 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:32:10,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:32:10,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:32:10,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:32:10,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:32:10,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:32:10,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:32:10,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:32:10,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:32:10,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:32:10,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:32:10,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:32:10,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:32:10,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:32:10,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:32:10,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:32:10,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:32:10,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:32:10,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:32:10,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:32:10,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:32:10,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:32:10,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:32:10,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:32:10,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:32:10,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:32:10,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:32:10,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:32:10,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:32:10,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:32:10,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:32:10,626 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:32:10,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:32:10,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:32:10,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:32:10,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:32:10,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:32:10,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:32:10,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:32:10,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:32:10,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:32:10,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:32:10,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:32:10,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:32:10,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:32:10,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:32:10,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:32:10,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:32:10,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:32:10,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:32:10,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:32:10,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:32:10,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:32:10,638 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:32:10,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:32:10,638 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:32:10,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:32:10,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:32:10,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:32:10,639 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4d7a62ffde252cff873ff489678769664732fba2c78998e7abea39f2d3f98ac [2022-07-19 13:32:10,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:32:11,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:32:11,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:32:11,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:32:11,015 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:32:11,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_double_exact.c [2022-07-19 13:32:11,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff72b21f/5f5c12295d8947b989d156c202f46922/FLAG857096348 [2022-07-19 13:32:11,485 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:32:11,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c [2022-07-19 13:32:11,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff72b21f/5f5c12295d8947b989d156c202f46922/FLAG857096348 [2022-07-19 13:32:11,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff72b21f/5f5c12295d8947b989d156c202f46922 [2022-07-19 13:32:11,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:32:11,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:32:11,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:32:11,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:32:11,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:32:11,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:32:11" (1/1) ... [2022-07-19 13:32:11,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c885961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:11, skipping insertion in model container [2022-07-19 13:32:11,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:32:11" (1/1) ... [2022-07-19 13:32:11,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:32:11,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:32:12,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2022-07-19 13:32:12,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:32:12,122 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:32:12,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_double_exact.c[393,406] [2022-07-19 13:32:12,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:32:12,172 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:32:12,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12 WrapperNode [2022-07-19 13:32:12,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:32:12,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:32:12,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:32:12,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:32:12,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,198 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2022-07-19 13:32:12,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:32:12,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:32:12,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:32:12,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:32:12,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:32:12,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:32:12,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:32:12,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:32:12,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (1/1) ... [2022-07-19 13:32:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:32:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:32:12,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:32:12,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:32:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:32:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:32:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:32:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:32:12,362 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:32:12,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:32:12,993 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:32:12,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:32:12,999 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:32:13,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:13 BoogieIcfgContainer [2022-07-19 13:32:13,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:32:13,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:32:13,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:32:13,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:32:13,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:32:11" (1/3) ... [2022-07-19 13:32:13,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9503e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:32:13, skipping insertion in model container [2022-07-19 13:32:13,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:32:12" (2/3) ... [2022-07-19 13:32:13,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9503e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:32:13, skipping insertion in model container [2022-07-19 13:32:13,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:13" (3/3) ... [2022-07-19 13:32:13,008 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_double_exact.c [2022-07-19 13:32:13,021 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:32:13,022 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:32:13,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:32:13,094 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c3ce501, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f0f420f [2022-07-19 13:32:13,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:32:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:32:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-19 13:32:13,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:32:13,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-19 13:32:13,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:32:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:32:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-07-19 13:32:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:32:13,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952836242] [2022-07-19 13:32:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:32:13,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:32:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:32:13,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:32:13,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:32:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:32:13,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 13:32:13,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:32:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:32:13,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:32:13,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:32:13,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952836242] [2022-07-19 13:32:13,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952836242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:32:13,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:32:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:32:13,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137626641] [2022-07-19 13:32:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:32:13,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:32:13,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:32:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:32:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:32:13,550 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:32:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:32:14,061 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-19 13:32:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:32:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-19 13:32:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:32:14,072 INFO L225 Difference]: With dead ends: 13 [2022-07-19 13:32:14,073 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 13:32:14,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:32:14,081 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 13:32:14,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 13:32:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 13:32:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 13:32:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:32:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 13:32:14,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2022-07-19 13:32:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:32:14,105 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 13:32:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:32:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 13:32:14,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 13:32:14,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:32:14,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:32:14,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:32:14,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 13:32:14,341 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 13:32:14,341 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 13:32:14,341 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 13:32:14,341 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 13:32:14,341 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2022-07-19 13:32:14,342 INFO L895 garLoopResultBuilder]: At program point L17(lines 8 18) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-07-19 13:32:14,342 INFO L899 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2022-07-19 13:32:14,342 INFO L899 garLoopResultBuilder]: For program point L6-1(line 6) no Hoare annotation was computed. [2022-07-19 13:32:14,342 INFO L895 garLoopResultBuilder]: At program point L6-3(line 6) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-07-19 13:32:14,345 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:32:14,348 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:32:14,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,360 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,361 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,361 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:32:14 BoogieIcfgContainer [2022-07-19 13:32:14,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:32:14,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:32:14,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:32:14,363 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:32:14,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:32:13" (3/4) ... [2022-07-19 13:32:14,366 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 13:32:14,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-19 13:32:14,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 13:32:14,375 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 13:32:14,375 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 13:32:14,402 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 13:32:14,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:32:14,403 INFO L158 Benchmark]: Toolchain (without parser) took 2508.96ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 42.1MB in the end (delta: -12.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:14,403 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:14,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.45ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.3MB in the beginning and 48.2MB in the end (delta: -18.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-19 13:32:14,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.43ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 46.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:14,405 INFO L158 Benchmark]: Boogie Preprocessor took 45.92ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 45.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:14,405 INFO L158 Benchmark]: RCFGBuilder took 755.23ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 37.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:32:14,405 INFO L158 Benchmark]: TraceAbstraction took 1359.14ms. Allocated memory is still 65.0MB. Free memory was 37.5MB in the beginning and 44.4MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:32:14,406 INFO L158 Benchmark]: Witness Printer took 39.66ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 42.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:32:14,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.45ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.3MB in the beginning and 48.2MB in the end (delta: -18.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.43ms. Allocated memory is still 65.0MB. Free memory was 48.2MB in the beginning and 46.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.92ms. Allocated memory is still 65.0MB. Free memory was 46.7MB in the beginning and 45.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 755.23ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 37.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1359.14ms. Allocated memory is still 65.0MB. Free memory was 37.5MB in the beginning and 44.4MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.66ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 42.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 6 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant [2022-07-19 13:32:14,415 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,415 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 8]: Loop Invariant [2022-07-19 13:32:14,416 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-19 13:32:14,416 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: cond == 1bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-07-19 13:32:14,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE