./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/float5.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 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:07:33,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:07:33,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:07:33,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:07:33,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:07:33,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:07:33,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:07:33,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:07:33,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:07:33,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:07:33,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:07:33,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:07:33,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:07:33,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:07:33,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:07:33,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:07:33,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:07:33,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:07:33,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:07:33,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:07:33,895 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:07:33,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:07:33,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:07:33,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:07:33,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:07:33,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:07:33,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:07:33,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:07:33,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:07:33,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:07:33,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:07:33,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:07:33,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:07:33,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:07:33,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:07:33,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:07:33,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:07:33,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:07:33,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:07:33,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:07:33,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:07:33,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:07:33,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:07:33,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:07:33,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:07:33,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:07:33,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:07:33,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:07:33,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:07:33,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:07:33,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:07:33,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:07:33,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:07:33,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:07:33,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:07:33,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:07:33,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:07:33,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:07:33,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:07:33,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:07:33,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:07:33,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:07:33,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:07:33,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:07:33,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:07:33,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:07:33,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:07:33,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:07:33,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:07:33,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:07:33,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:07:33,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:07:33,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:07:33,970 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:07:33,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:07:33,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:07:33,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2022-07-21 01:07:34,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:07:34,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:07:34,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:07:34,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:07:34,287 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:07:34,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2022-07-21 01:07:34,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bafb39d/7355ab2da2c04af7ac0ecc900705353d/FLAG9ea2693c5 [2022-07-21 01:07:34,722 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:07:34,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2022-07-21 01:07:34,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bafb39d/7355ab2da2c04af7ac0ecc900705353d/FLAG9ea2693c5 [2022-07-21 01:07:34,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9bafb39d/7355ab2da2c04af7ac0ecc900705353d [2022-07-21 01:07:34,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:07:34,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:07:34,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:07:34,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:07:34,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:07:34,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb8f1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34, skipping insertion in model container [2022-07-21 01:07:34,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:07:34,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:07:34,904 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/float5.c[501,514] [2022-07-21 01:07:34,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:07:34,920 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:07:34,937 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/float5.c[501,514] [2022-07-21 01:07:34,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:07:34,948 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:07:34,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34 WrapperNode [2022-07-21 01:07:34,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:07:34,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:07:34,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:07:34,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:07:34,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,987 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-21 01:07:34,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:07:34,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:07:34,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:07:34,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:07:34,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:34,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:35,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:35,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:35,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:35,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:07:35,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:07:35,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:07:35,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:07:35,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (1/1) ... [2022-07-21 01:07:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:07:35,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:07:35,044 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) [2022-07-21 01:07:35,068 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 [2022-07-21 01:07:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:07:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:07:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:07:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:07:35,143 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:07:35,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:07:35,229 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:07:35,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:07:35,235 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:07:35,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:35 BoogieIcfgContainer [2022-07-21 01:07:35,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:07:35,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:07:35,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:07:35,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:07:35,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:07:34" (1/3) ... [2022-07-21 01:07:35,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6273e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:07:35, skipping insertion in model container [2022-07-21 01:07:35,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:34" (2/3) ... [2022-07-21 01:07:35,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6273e0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:07:35, skipping insertion in model container [2022-07-21 01:07:35,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:35" (3/3) ... [2022-07-21 01:07:35,243 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2022-07-21 01:07:35,255 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:07:35,255 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:07:35,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:07:35,310 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@17c8029d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4bbbfcb5 [2022-07-21 01:07:35,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:07:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-07-21 01:07:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:07:35,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:07:35,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:07:35,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:07:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:07:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:07:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:07:35,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480479992] [2022-07-21 01:07:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:07:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:07:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:07:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:07:35,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:07:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480479992] [2022-07-21 01:07:35,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480479992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:07:35,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:07:35,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:07:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578419014] [2022-07-21 01:07:35,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:07:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:07:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:07:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:07:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:07:35,480 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-21 01:07:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:07:35,489 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-07-21 01:07:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:07:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-07-21 01:07:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:07:35,496 INFO L225 Difference]: With dead ends: 17 [2022-07-21 01:07:35,496 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:07:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:07:35,503 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:07:35,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:07:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:07:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:07:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2022-07-21 01:07:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:07:35,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:07:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:07:35,528 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:07:35,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-21 01:07:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:07:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:07:35,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:07:35,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:07:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:07:35,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:07:35,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:07:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:07:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:07:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308358142] [2022-07-21 01:07:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:07:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:07:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:07:35,558 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:07:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:07:35,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:07:35,591 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:07:35,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:07:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:07:35,598 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:07:35,600 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:07:35,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:07:35 BoogieIcfgContainer [2022-07-21 01:07:35,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:07:35,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:07:35,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:07:35,623 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:07:35,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:35" (3/4) ... [2022-07-21 01:07:35,627 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:07:35,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:07:35,628 INFO L158 Benchmark]: Toolchain (without parser) took 887.74ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.3MB in the beginning and 34.0MB in the end (delta: -1.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,629 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:07:35,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.59ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 51.4MB in the end (delta: -19.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.52ms. Allocated memory is still 67.1MB. Free memory was 51.4MB in the beginning and 49.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,635 INFO L158 Benchmark]: Boogie Preprocessor took 19.71ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 49.0MB in the end (delta: 899.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:07:35,635 INFO L158 Benchmark]: RCFGBuilder took 226.36ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 41.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,635 INFO L158 Benchmark]: TraceAbstraction took 383.87ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 34.3MB in the end (delta: 6.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,636 INFO L158 Benchmark]: Witness Printer took 5.13ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 34.0MB in the end (delta: 346.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:07:35,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.59ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 51.4MB in the end (delta: -19.4MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.52ms. Allocated memory is still 67.1MB. Free memory was 51.4MB in the beginning and 49.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.71ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 49.0MB in the end (delta: 899.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.36ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 41.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 383.87ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 34.3MB in the end (delta: 6.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 5.13ms. Allocated memory is still 67.1MB. Free memory was 34.3MB in the beginning and 34.0MB in the end (delta: 346.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 VAL [b=49] [L14] COND TRUE !(a==b) VAL [b=49] [L14] reach_error() VAL [b=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:07:35,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float5.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 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:07:37,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:07:37,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:07:37,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:07:37,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:07:37,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:07:37,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:07:37,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:07:37,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:07:37,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:07:37,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:07:37,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:07:37,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:07:37,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:07:37,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:07:37,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:07:37,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:07:37,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:07:37,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:07:37,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:07:37,538 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:07:37,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:07:37,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:07:37,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:07:37,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:07:37,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:07:37,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:07:37,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:07:37,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:07:37,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:07:37,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:07:37,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:07:37,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:07:37,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:07:37,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:07:37,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:07:37,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:07:37,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:07:37,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:07:37,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:07:37,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:07:37,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:07:37,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:07:37,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:07:37,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:07:37,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:07:37,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:07:37,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:07:37,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:07:37,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:07:37,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:07:37,613 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:07:37,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:07:37,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:07:37,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:07:37,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:07:37,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:07:37,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:07:37,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:07:37,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:07:37,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:07:37,616 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:07:37,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:07:37,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:07:37,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:07:37,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:07:37,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:07:37,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:07:37,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:07:37,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:07:37,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:07:37,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:07:37,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:07:37,618 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:07:37,618 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:07:37,618 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:07:37,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:07:37,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:07:37,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:07:37,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2022-07-21 01:07:37,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:07:37,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:07:37,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:07:37,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:07:37,935 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:07:37,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2022-07-21 01:07:37,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227780928/00e95eb52de540d7b8ef88bd1c6209e9/FLAG55a3c9bb1 [2022-07-21 01:07:38,399 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:07:38,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2022-07-21 01:07:38,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227780928/00e95eb52de540d7b8ef88bd1c6209e9/FLAG55a3c9bb1 [2022-07-21 01:07:38,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227780928/00e95eb52de540d7b8ef88bd1c6209e9 [2022-07-21 01:07:38,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:07:38,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:07:38,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:07:38,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:07:38,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:07:38,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d8f96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38, skipping insertion in model container [2022-07-21 01:07:38,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:07:38,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:07:38,604 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/float5.c[501,514] [2022-07-21 01:07:38,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:07:38,618 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:07:38,635 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/float5.c[501,514] [2022-07-21 01:07:38,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:07:38,658 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:07:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38 WrapperNode [2022-07-21 01:07:38,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:07:38,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:07:38,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:07:38,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:07:38,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,714 INFO L137 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-07-21 01:07:38,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:07:38,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:07:38,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:07:38,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:07:38,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:07:38,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:07:38,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:07:38,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:07:38,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (1/1) ... [2022-07-21 01:07:38,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:07:38,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:07:38,784 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) [2022-07-21 01:07:38,807 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 [2022-07-21 01:07:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:07:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:07:38,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:07:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:07:38,892 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:07:38,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:07:39,086 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:07:39,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:07:39,092 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 01:07:39,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:39 BoogieIcfgContainer [2022-07-21 01:07:39,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:07:39,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:07:39,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:07:39,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:07:39,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:07:38" (1/3) ... [2022-07-21 01:07:39,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38698b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:07:39, skipping insertion in model container [2022-07-21 01:07:39,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:07:38" (2/3) ... [2022-07-21 01:07:39,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38698b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:07:39, skipping insertion in model container [2022-07-21 01:07:39,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:39" (3/3) ... [2022-07-21 01:07:39,100 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2022-07-21 01:07:39,112 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:07:39,112 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:07:39,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:07:39,152 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@8e367a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1478af19 [2022-07-21 01:07:39,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:07:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-07-21 01:07:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:07:39,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:07:39,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:07:39,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:07:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:07:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-21 01:07:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:07:39,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442088642] [2022-07-21 01:07:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:07:39,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:07:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:07:39,215 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) [2022-07-21 01:07:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:07:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:07:39,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:07:39,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:07:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:07:39,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:07:39,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:07:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442088642] [2022-07-21 01:07:39,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442088642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:07:39,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:07:39,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:07:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536017194] [2022-07-21 01:07:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:07:39,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:07:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:07:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:07:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:07:39,374 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-21 01:07:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:07:39,384 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-07-21 01:07:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:07:39,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-07-21 01:07:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:07:39,391 INFO L225 Difference]: With dead ends: 17 [2022-07-21 01:07:39,391 INFO L226 Difference]: Without dead ends: 7 [2022-07-21 01:07:39,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:07:39,397 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:07:39,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:07:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-21 01:07:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-21 01:07:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2022-07-21 01:07:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-21 01:07:39,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-21 01:07:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:07:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-21 01:07:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-21 01:07:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-21 01:07:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 01:07:39,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:07:39,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 01:07:39,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 01:07:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:07:39,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:07:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:07:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-21 01:07:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:07:39,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585732728] [2022-07-21 01:07:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:07:39,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:07:39,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:07:39,632 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) [2022-07-21 01:07:39,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:07:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:07:39,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 01:07:39,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:07:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:07:50,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:07:50,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:07:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585732728] [2022-07-21 01:07:50,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585732728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:07:50,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:07:50,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:07:50,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194673968] [2022-07-21 01:07:50,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:07:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:07:50,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:07:50,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:07:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:07:50,262 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-07-21 01:07:52,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:08:01,464 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 33 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 01:08:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:08:01,465 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-07-21 01:08:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:08:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 [2022-07-21 01:08:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:08:01,467 INFO L225 Difference]: With dead ends: 7 [2022-07-21 01:08:01,467 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 01:08:01,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:08:01,469 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 01:08:01,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 01:08:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 01:08:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 01:08:01,470 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) [2022-07-21 01:08:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 01:08:01,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-07-21 01:08:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:08:01,470 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 01:08:01,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-07-21 01:08:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 01:08:01,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 01:08:01,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:08:01,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:08:01,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:08:01,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 01:08:01,681 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 01:08:01,681 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 01:08:01,681 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 01:08:01,681 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 01:08:01,682 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-07-21 01:08:01,682 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2022-07-21 01:08:01,682 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2022-07-21 01:08:01,682 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-07-21 01:08:01,682 INFO L899 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2022-07-21 01:08:01,683 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 15) no Hoare annotation was computed. [2022-07-21 01:08:01,685 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:08:01,687 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:08:01,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:08:01 BoogieIcfgContainer [2022-07-21 01:08:01,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:08:01,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:08:01,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:08:01,692 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:08:01,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:07:39" (3/4) ... [2022-07-21 01:08:01,695 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 01:08:01,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-21 01:08:01,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 01:08:01,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 01:08:01,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 01:08:01,728 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:08:01,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:08:01,735 INFO L158 Benchmark]: Toolchain (without parser) took 23307.59ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 31.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-07-21 01:08:01,736 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:08:01,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.06ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 54.4MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:08:01,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 71.3MB. Free memory was 54.4MB in the beginning and 53.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:08:01,739 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:08:01,739 INFO L158 Benchmark]: RCFGBuilder took 338.71ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 43.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:08:01,740 INFO L158 Benchmark]: TraceAbstraction took 22595.56ms. Allocated memory is still 71.3MB. Free memory was 43.0MB in the beginning and 33.6MB in the end (delta: 9.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-07-21 01:08:01,740 INFO L158 Benchmark]: Witness Printer took 41.12ms. Allocated memory is still 71.3MB. Free memory was 33.6MB in the beginning and 31.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:08:01,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.06ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 54.4MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 71.3MB. Free memory was 54.4MB in the beginning and 53.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 51.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.71ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 43.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22595.56ms. Allocated memory is still 71.3MB. Free memory was 43.0MB in the beginning and 33.6MB in the end (delta: 9.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 41.12ms. Allocated memory is still 71.3MB. Free memory was 33.6MB in the beginning and 31.2MB in the end (delta: 2.4MB). 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: 14]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 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, 10.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 3 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 01:08:01,808 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