./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/floats-cbmc-regression/float2.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 bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:22:40,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:22:40,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:22:40,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:22:40,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:22:40,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:22:40,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:22:40,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:22:40,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:22:40,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:22:40,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:22:40,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:22:40,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:22:40,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:22:40,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:22:40,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:22:40,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:22:40,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:22:40,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:22:40,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:22:40,973 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:22:40,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:22:40,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:22:40,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:22:40,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:22:40,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:22:40,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:22:40,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:22:40,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:22:40,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:22:40,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:22:40,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:22:40,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:22:40,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:22:40,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:22:40,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:22:40,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:22:40,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:22:40,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:22:40,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:22:40,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:22:40,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:22:40,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:22:41,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:22:41,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:22:41,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:22:41,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:22:41,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:22:41,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:22:41,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:22:41,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:22:41,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:22:41,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:22:41,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:22:41,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:22:41,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:22:41,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:22:41,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:22:41,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:22:41,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:22:41,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:22:41,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:22:41,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:22:41,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:22:41,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:22:41,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:22:41,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:22:41,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:22:41,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:22:41,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:22:41,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:22:41,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:22:41,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:22:41,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:22:41,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:22:41,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:22:41,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2022-07-12 02:22:41,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:22:41,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:22:41,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:22:41,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:22:41,313 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:22:41,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-12 02:22:41,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6263134d5/b0e6f5e1b66d46b982210eb0f8733da6/FLAGfc90bf2dc [2022-07-12 02:22:41,706 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:22:41,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-12 02:22:41,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6263134d5/b0e6f5e1b66d46b982210eb0f8733da6/FLAGfc90bf2dc [2022-07-12 02:22:41,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6263134d5/b0e6f5e1b66d46b982210eb0f8733da6 [2022-07-12 02:22:41,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:22:41,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:22:41,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:22:41,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:22:41,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:22:41,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd39f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41, skipping insertion in model container [2022-07-12 02:22:41,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:22:41,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:22:41,899 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/floats-cbmc-regression/float2.c[366,379] [2022-07-12 02:22:41,905 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/floats-cbmc-regression/float2.c[420,433] [2022-07-12 02:22:41,906 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/floats-cbmc-regression/float2.c[493,506] [2022-07-12 02:22:41,908 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/floats-cbmc-regression/float2.c[557,570] [2022-07-12 02:22:41,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:22:41,919 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:22:41,935 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/floats-cbmc-regression/float2.c[366,379] [2022-07-12 02:22:41,936 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/floats-cbmc-regression/float2.c[420,433] [2022-07-12 02:22:41,936 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/floats-cbmc-regression/float2.c[493,506] [2022-07-12 02:22:41,938 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/floats-cbmc-regression/float2.c[557,570] [2022-07-12 02:22:41,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:22:41,950 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:22:41,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41 WrapperNode [2022-07-12 02:22:41,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:22:41,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:22:41,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:22:41,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:22:41,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,984 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-07-12 02:22:41,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:22:41,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:22:41,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:22:41,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:22:41,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:41,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:42,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:42,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:42,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:22:42,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:22:42,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:22:42,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:22:42,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (1/1) ... [2022-07-12 02:22:42,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:22:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:22:42,034 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) [2022-07-12 02:22:42,045 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 [2022-07-12 02:22:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:22:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:22:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:22:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:22:42,121 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:22:42,122 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:22:42,202 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:22:42,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:22:42,208 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:22:42,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:42 BoogieIcfgContainer [2022-07-12 02:22:42,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:22:42,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:22:42,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:22:42,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:22:42,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:22:41" (1/3) ... [2022-07-12 02:22:42,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770a9a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:22:42, skipping insertion in model container [2022-07-12 02:22:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:41" (2/3) ... [2022-07-12 02:22:42,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770a9a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:22:42, skipping insertion in model container [2022-07-12 02:22:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:42" (3/3) ... [2022-07-12 02:22:42,232 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-07-12 02:22:42,249 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:22:42,249 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 02:22:42,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:22:42,292 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@42cac92a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7287bfc6 [2022-07-12 02:22:42,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 02:22:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-07-12 02:22:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 02:22:42,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:22:42,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 02:22:42,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 02:22:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:22:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-12 02:22:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:22:42,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755861210] [2022-07-12 02:22:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:22:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:22:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:22:42,406 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:22:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:22:42,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:22:42,444 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:22:42,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 02:22:42,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 02:22:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-12 02:22:42,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 02:22:42,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:22:42,462 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 02:22:42,466 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:22:42,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:22:42 BoogieIcfgContainer [2022-07-12 02:22:42,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:22:42,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:22:42,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:22:42,486 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:22:42,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:42" (3/4) ... [2022-07-12 02:22:42,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:22:42,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:22:42,511 INFO L158 Benchmark]: Toolchain (without parser) took 765.83ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 61.5MB in the beginning and 104.0MB in the end (delta: -42.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:42,511 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:42,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.72ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 51.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:22:42,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.83ms. Allocated memory is still 100.7MB. Free memory was 51.3MB in the beginning and 50.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:22:42,519 INFO L158 Benchmark]: Boogie Preprocessor took 20.78ms. Allocated memory is still 100.7MB. Free memory was 50.0MB in the beginning and 49.1MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:42,519 INFO L158 Benchmark]: RCFGBuilder took 202.46ms. Allocated memory is still 100.7MB. Free memory was 49.1MB in the beginning and 40.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:22:42,520 INFO L158 Benchmark]: TraceAbstraction took 257.90ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 104.0MB in the end (delta: 373.3kB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-07-12 02:22:42,520 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 127.9MB. Free memory was 104.0MB in the beginning and 104.0MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:42,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.72ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 51.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.83ms. Allocated memory is still 100.7MB. Free memory was 51.3MB in the beginning and 50.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.78ms. Allocated memory is still 100.7MB. Free memory was 50.0MB in the beginning and 49.1MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 202.46ms. Allocated memory is still 100.7MB. Free memory was 49.1MB in the beginning and 40.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 257.90ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 104.0MB in the end (delta: 373.3kB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 127.9MB. Free memory was 104.0MB in the beginning and 104.0MB in the end (delta: 2.6kB). There was no memory consumed. 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: 12]: 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 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L VAL [a=5/4] [L12] COND TRUE !(a==1.25) VAL [a=5/4] [L12] reach_error() VAL [a=5/4] - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 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=20occurred 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 [2022-07-12 02:22:42,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/floats-cbmc-regression/float2.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 bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:22:44,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:22:44,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:22:44,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:22:44,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:22:44,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:22:44,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:22:44,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:22:44,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:22:44,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:22:44,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:22:44,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:22:44,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:22:44,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:22:44,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:22:44,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:22:44,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:22:44,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:22:44,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:22:44,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:22:44,660 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:22:44,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:22:44,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:22:44,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:22:44,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:22:44,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:22:44,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:22:44,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:22:44,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:22:44,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:22:44,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:22:44,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:22:44,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:22:44,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:22:44,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:22:44,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:22:44,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:22:44,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:22:44,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:22:44,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:22:44,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:22:44,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:22:44,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:22:44,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:22:44,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:22:44,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:22:44,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:22:44,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:22:44,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:22:44,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:22:44,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:22:44,730 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:22:44,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:22:44,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:22:44,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:22:44,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:22:44,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:22:44,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:22:44,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:22:44,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:22:44,732 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:22:44,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:22:44,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:22:44,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:22:44,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:22:44,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:22:44,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:22:44,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:22:44,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:22:44,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:22:44,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:22:44,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:22:44,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:22:44,735 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:22:44,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:22:44,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:22:44,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:22:44,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:22:44,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:22:44,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2022-07-12 02:22:45,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:22:45,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:22:45,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:22:45,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:22:45,103 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:22:45,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-12 02:22:45,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf222062/c752cc5b6a9549e2ab6dab424ae63b9d/FLAG43f73ef46 [2022-07-12 02:22:45,549 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:22:45,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2022-07-12 02:22:45,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf222062/c752cc5b6a9549e2ab6dab424ae63b9d/FLAG43f73ef46 [2022-07-12 02:22:45,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf222062/c752cc5b6a9549e2ab6dab424ae63b9d [2022-07-12 02:22:45,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:22:45,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:22:45,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:22:45,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:22:45,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:22:45,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:22:45" (1/1) ... [2022-07-12 02:22:45,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7739a1ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:45, skipping insertion in model container [2022-07-12 02:22:45,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:22:45" (1/1) ... [2022-07-12 02:22:45,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:22:45,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:22:46,113 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/floats-cbmc-regression/float2.c[366,379] [2022-07-12 02:22:46,119 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/floats-cbmc-regression/float2.c[420,433] [2022-07-12 02:22:46,120 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/floats-cbmc-regression/float2.c[493,506] [2022-07-12 02:22:46,123 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/floats-cbmc-regression/float2.c[557,570] [2022-07-12 02:22:46,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:22:46,142 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:22:46,154 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/floats-cbmc-regression/float2.c[366,379] [2022-07-12 02:22:46,156 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/floats-cbmc-regression/float2.c[420,433] [2022-07-12 02:22:46,157 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/floats-cbmc-regression/float2.c[493,506] [2022-07-12 02:22:46,158 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/floats-cbmc-regression/float2.c[557,570] [2022-07-12 02:22:46,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:22:46,175 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:22:46,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46 WrapperNode [2022-07-12 02:22:46,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:22:46,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:22:46,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:22:46,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:22:46,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,240 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-07-12 02:22:46,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:22:46,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:22:46,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:22:46,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:22:46,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:22:46,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:22:46,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:22:46,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:22:46,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (1/1) ... [2022-07-12 02:22:46,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:22:46,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:22:46,321 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) [2022-07-12 02:22:46,341 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 [2022-07-12 02:22:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:22:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:22:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:22:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:22:46,426 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:22:46,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:22:46,686 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:22:46,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:22:46,691 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:22:46,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:46 BoogieIcfgContainer [2022-07-12 02:22:46,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:22:46,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:22:46,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:22:46,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:22:46,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:22:45" (1/3) ... [2022-07-12 02:22:46,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286f1f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:22:46, skipping insertion in model container [2022-07-12 02:22:46,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:22:46" (2/3) ... [2022-07-12 02:22:46,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286f1f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:22:46, skipping insertion in model container [2022-07-12 02:22:46,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:46" (3/3) ... [2022-07-12 02:22:46,709 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-07-12 02:22:46,728 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:22:46,728 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 02:22:46,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:22:46,801 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@c52f186, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@463b7fd0 [2022-07-12 02:22:46,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 02:22:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-07-12 02:22:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 02:22:46,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:22:46,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 02:22:46,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 02:22:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:22:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-12 02:22:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:22:46,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129060473] [2022-07-12 02:22:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:22:46,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:22:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:22:46,837 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) [2022-07-12 02:22:46,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:22:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:22:46,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 02:22:46,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:22:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:22:46,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:22:46,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:22:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129060473] [2022-07-12 02:22:46,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129060473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:22:46,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:22:46,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 02:22:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834568637] [2022-07-12 02:22:46,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:22:46,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 02:22:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:22:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 02:22:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,005 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-07-12 02:22:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:22:47,103 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-12 02:22:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 02:22:47,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-07-12 02:22:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:22:47,113 INFO L225 Difference]: With dead ends: 35 [2022-07-12 02:22:47,113 INFO L226 Difference]: Without dead ends: 15 [2022-07-12 02:22:47,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,125 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 02:22:47,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 02:22:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-12 02:22:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-12 02:22:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 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) [2022-07-12 02:22:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-07-12 02:22:47,153 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2022-07-12 02:22:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:22:47,154 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-07-12 02:22:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-07-12 02:22:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-07-12 02:22:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-12 02:22:47,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:22:47,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-12 02:22:47,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 02:22:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:22:47,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 02:22:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:22:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2022-07-12 02:22:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:22:47,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142312815] [2022-07-12 02:22:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:22:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:22:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:22:47,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:22:47,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:22:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:22:47,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 02:22:47,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:22:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:22:47,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:22:47,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:22:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142312815] [2022-07-12 02:22:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142312815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:22:47,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:22:47,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 02:22:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254246326] [2022-07-12 02:22:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:22:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 02:22:47,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:22:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 02:22:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,417 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-12 02:22:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:22:47,514 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-07-12 02:22:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 02:22:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-12 02:22:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:22:47,515 INFO L225 Difference]: With dead ends: 15 [2022-07-12 02:22:47,515 INFO L226 Difference]: Without dead ends: 13 [2022-07-12 02:22:47,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,517 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 02:22:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 02:22:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-12 02:22:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-12 02:22:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 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) [2022-07-12 02:22:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-07-12 02:22:47,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2022-07-12 02:22:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:22:47,519 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-07-12 02:22:47,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-12 02:22:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-07-12 02:22:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 02:22:47,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:22:47,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:22:47,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 02:22:47,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:22:47,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 02:22:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:22:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2022-07-12 02:22:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:22:47,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190137500] [2022-07-12 02:22:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:22:47,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:22:47,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:22:47,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:22:47,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 02:22:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:22:47,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 02:22:47,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:22:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:22:47,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:22:47,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:22:47,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190137500] [2022-07-12 02:22:47,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190137500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:22:47,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:22:47,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 02:22:47,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510930261] [2022-07-12 02:22:47,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:22:47,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 02:22:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:22:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 02:22:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,772 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-12 02:22:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:22:47,888 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-12 02:22:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 02:22:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-07-12 02:22:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:22:47,890 INFO L225 Difference]: With dead ends: 13 [2022-07-12 02:22:47,890 INFO L226 Difference]: Without dead ends: 11 [2022-07-12 02:22:47,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:47,893 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 02:22:47,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 02:22:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-12 02:22:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-12 02:22:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2022-07-12 02:22:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-07-12 02:22:47,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2022-07-12 02:22:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:22:47,899 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-07-12 02:22:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-12 02:22:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-07-12 02:22:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 02:22:47,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:22:47,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:22:47,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-12 02:22:48,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:22:48,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 02:22:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:22:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2022-07-12 02:22:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:22:48,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062701602] [2022-07-12 02:22:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:22:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:22:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:22:48,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:22:48,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 02:22:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:22:48,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 02:22:48,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:22:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:22:48,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:22:48,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:22:48,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062701602] [2022-07-12 02:22:48,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062701602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:22:48,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:22:48,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 02:22:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107155930] [2022-07-12 02:22:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:22:48,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 02:22:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:22:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 02:22:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:48,161 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-12 02:22:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:22:48,276 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-07-12 02:22:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 02:22:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-07-12 02:22:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:22:48,276 INFO L225 Difference]: With dead ends: 11 [2022-07-12 02:22:48,276 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 02:22:48,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:22:48,277 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 02:22:48,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 02:22:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 02:22:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 02:22:48,278 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) [2022-07-12 02:22:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 02:22:48,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-07-12 02:22:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:22:48,279 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 02:22:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-12 02:22:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 02:22:48,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 02:22:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 02:22:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 02:22:48,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-12 02:22:48,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 02:22:48,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-12 02:22:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:22:48,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 02:22:48,493 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 02:22:48,493 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-07-12 02:22:48,494 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point L5(lines 5 24) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 02:22:48,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 02:22:48,496 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-07-12 02:22:48,496 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-12 02:22:48,496 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-12 02:22:48,496 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-07-12 02:22:48,496 INFO L899 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2022-07-12 02:22:48,499 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-12 02:22:48,503 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:22:48,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:22:48 BoogieIcfgContainer [2022-07-12 02:22:48,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:22:48,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:22:48,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:22:48,507 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:22:48,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:22:46" (3/4) ... [2022-07-12 02:22:48,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 02:22:48,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-12 02:22:48,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 02:22:48,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 02:22:48,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 02:22:48,535 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 02:22:48,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:22:48,535 INFO L158 Benchmark]: Toolchain (without parser) took 2562.08ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 47.2MB in the beginning and 62.6MB in the end (delta: -15.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,536 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:48,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.48ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 36.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.05ms. Allocated memory is still 67.1MB. Free memory was 36.7MB in the beginning and 49.6MB in the end (delta: -12.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,537 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 48.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,537 INFO L158 Benchmark]: RCFGBuilder took 409.86ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 40.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,537 INFO L158 Benchmark]: TraceAbstraction took 1802.73ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 39.9MB in the beginning and 65.3MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:22:48,537 INFO L158 Benchmark]: Witness Printer took 28.41ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 62.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:22:48,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.48ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 36.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.05ms. Allocated memory is still 67.1MB. Free memory was 36.7MB in the beginning and 49.6MB in the end (delta: -12.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 48.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.86ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 40.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1802.73ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 39.9MB in the beginning and 65.3MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.41ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 62.6MB in the end (delta: 2.2MB). 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 8 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 02:22:48,568 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