./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0480.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/float-newlib/float_req_bl_0480.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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:49:51,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:49:51,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:49:51,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:49:51,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:49:51,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:49:51,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:49:51,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:49:51,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:49:51,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:49:51,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:49:51,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:49:51,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:49:51,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:49:51,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:49:51,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:49:51,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:49:51,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:49:51,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:49:51,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:49:51,877 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:49:51,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:49:51,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:49:51,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:49:51,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:49:51,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:49:51,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:49:51,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:49:51,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:49:51,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:49:51,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:49:51,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:49:51,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:49:51,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:49:51,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:49:51,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:49:51,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:49:51,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:49:51,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:49:51,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:49:51,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:49:51,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:49:51,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:49:51,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:49:51,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:49:51,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:49:51,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:49:51,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:49:51,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:49:51,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:49:51,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:49:51,953 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:49:51,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:49:51,954 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:49:51,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:49:51,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:49:51,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:49:51,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:49:51,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:49:51,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:49:51,955 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:49:51,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:49:51,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:49:51,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:49:51,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:49:51,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:49:51,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:49:51,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:49:51,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:49:51,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:49:51,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:49:51,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:49:51,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:49:51,958 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:49:51,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:49:51,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:49:51,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2022-07-21 01:49:52,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:49:52,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:49:52,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:49:52,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:49:52,335 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:49:52,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2022-07-21 01:49:52,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e127104/2f52b25d647b4dbe8cb2dc83f8ec224f/FLAG2f7b952a0 [2022-07-21 01:49:52,830 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:49:52,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2022-07-21 01:49:52,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e127104/2f52b25d647b4dbe8cb2dc83f8ec224f/FLAG2f7b952a0 [2022-07-21 01:49:53,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e127104/2f52b25d647b4dbe8cb2dc83f8ec224f [2022-07-21 01:49:53,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:49:53,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:49:53,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:49:53,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:49:53,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:49:53,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4d1a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53, skipping insertion in model container [2022-07-21 01:49:53,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:49:53,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:49:53,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2022-07-21 01:49:53,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:49:53,488 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:49:53,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2022-07-21 01:49:53,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:49:53,568 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:49:53,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53 WrapperNode [2022-07-21 01:49:53,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:49:53,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:49:53,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:49:53,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:49:53,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,622 INFO L137 Inliner]: procedures = 18, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2022-07-21 01:49:53,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:49:53,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:49:53,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:49:53,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:49:53,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:49:53,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:49:53,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:49:53,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:49:53,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (1/1) ... [2022-07-21 01:49:53,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:49:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:49:53,700 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 01:49:53,712 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 01:49:53,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-21 01:49:53,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:49:53,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:49:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 01:49:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:49:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-07-21 01:49:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-07-21 01:49:53,901 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:49:53,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:49:54,249 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:49:54,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:49:54,255 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-21 01:49:54,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:49:54 BoogieIcfgContainer [2022-07-21 01:49:54,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:49:54,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:49:54,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:49:54,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:49:54,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:49:53" (1/3) ... [2022-07-21 01:49:54,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:49:54, skipping insertion in model container [2022-07-21 01:49:54,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:53" (2/3) ... [2022-07-21 01:49:54,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:49:54, skipping insertion in model container [2022-07-21 01:49:54,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:49:54" (3/3) ... [2022-07-21 01:49:54,267 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2022-07-21 01:49:54,282 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:49:54,282 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:49:54,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:49:54,359 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@60a2c0dd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@688c9760 [2022-07-21 01:49:54,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:49:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 63 states have (on average 1.7301587301587302) internal successors, (109), 64 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:49:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:49:54,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:49:54,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:49:54,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:49:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:49:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash -898785153, now seen corresponding path program 1 times [2022-07-21 01:49:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:49:54,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478512786] [2022-07-21 01:49:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:49:54,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:49:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:49:54,533 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 01:49:54,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:49:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478512786] [2022-07-21 01:49:54,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478512786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:49:54,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:49:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:49:54,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979560327] [2022-07-21 01:49:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:49:54,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:49:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:49:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:49:54,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:49:54,572 INFO L87 Difference]: Start difference. First operand has 68 states, 63 states have (on average 1.7301587301587302) internal successors, (109), 64 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:49:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:49:54,609 INFO L93 Difference]: Finished difference Result 134 states and 226 transitions. [2022-07-21 01:49:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:49:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:49:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:49:54,618 INFO L225 Difference]: With dead ends: 134 [2022-07-21 01:49:54,619 INFO L226 Difference]: Without dead ends: 65 [2022-07-21 01:49:54,624 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 01:49:54,630 INFO L413 NwaCegarLoop]: 91 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, 91 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 01:49:54,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:49:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-21 01:49:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-07-21 01:49:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:49:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2022-07-21 01:49:54,682 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 10 [2022-07-21 01:49:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:49:54,683 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2022-07-21 01:49:54,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:49:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2022-07-21 01:49:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:49:54,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:49:54,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:49:54,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:49:54,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:49:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:49:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1060874946, now seen corresponding path program 1 times [2022-07-21 01:49:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:49:54,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826617715] [2022-07-21 01:49:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:49:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:49:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:49:54,799 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 01:49:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:49:54,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826617715] [2022-07-21 01:49:54,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826617715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:49:54,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:49:54,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:49:54,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109228318] [2022-07-21 01:49:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:49:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:49:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:49:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:49:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:49:54,805 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:49:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:49:54,867 INFO L93 Difference]: Finished difference Result 131 states and 175 transitions. [2022-07-21 01:49:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:49:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11 [2022-07-21 01:49:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:49:54,878 INFO L225 Difference]: With dead ends: 131 [2022-07-21 01:49:54,878 INFO L226 Difference]: Without dead ends: 78 [2022-07-21 01:49:54,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:49:54,880 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:49:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 160 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:49:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-21 01:49:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2022-07-21 01:49:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.353846153846154) internal successors, (88), 65 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:49:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2022-07-21 01:49:54,894 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 11 [2022-07-21 01:49:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:49:54,895 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2022-07-21 01:49:54,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:49:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2022-07-21 01:49:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 01:49:54,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:49:54,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:49:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:49:54,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:49:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:49:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash -951685113, now seen corresponding path program 1 times [2022-07-21 01:49:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:49:54,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353281609] [2022-07-21 01:49:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:49:54,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:49:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:49:54,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:49:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:49:55,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:49:55,008 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:49:55,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:49:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:49:55,014 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 01:49:55,017 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:49:55,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:49:55 BoogieIcfgContainer [2022-07-21 01:49:55,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:49:55,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:49:55,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:49:55,071 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:49:55,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:49:54" (3/4) ... [2022-07-21 01:49:55,074 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:49:55,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:49:55,075 INFO L158 Benchmark]: Toolchain (without parser) took 1825.62ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 43.5MB in the beginning and 59.8MB in the end (delta: -16.4MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,076 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:49:55,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.21ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 45.5MB in the end (delta: -2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.28ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 43.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,084 INFO L158 Benchmark]: Boogie Preprocessor took 40.22ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,085 INFO L158 Benchmark]: RCFGBuilder took 592.33ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 39.1MB in the end (delta: 2.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,085 INFO L158 Benchmark]: TraceAbstraction took 811.09ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 38.5MB in the beginning and 60.5MB in the end (delta: -22.0MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,085 INFO L158 Benchmark]: Witness Printer took 3.73ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 59.8MB in the end (delta: 482.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:49:55,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.21ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 45.5MB in the end (delta: -2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.28ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 43.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.22ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.33ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 39.1MB in the end (delta: 2.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 811.09ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 38.5MB in the beginning and 60.5MB in the end (delta: -22.0MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 3.73ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 59.8MB in the end (delta: 482.7kB). 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: 184]: 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 183, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of someBinaryArithmeticFLOAToperation at line 111. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L83-L90] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L179] float x = 1.0f; [L180] CALL, EXPR __ieee754_acosf(x) [L93] float z, p, q, r, w, s, c, df; [L94] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] ieee_float_shape_type gf_u; [L97] gf_u.value = (x) [L98] EXPR gf_u.word [L98] (hx) = gf_u.word [L100] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L101] COND FALSE !(ix == 0x3f800000) VAL [\old(x)=1, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L106] COND FALSE !(ix > 0x3f800000) VAL [\old(x)=1, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L109] COND TRUE ix < 0x3f000000 VAL [\old(x)=1, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L110] COND TRUE ix <= 0x23000000 [L111] return pio2_hi_acos + pio2_lo_acos; VAL [\old(x)=1, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L180] RET, EXPR __ieee754_acosf(x) [L180] float res = __ieee754_acosf(x); [L183] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=4294967297, res == 0.0f && __signbit_float(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L183] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L184] reach_error() VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=4294967297, tiny_sqrt=1/1000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 251 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 175 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, InterpolantAutomatonStates: 5, 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:49:55,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0480.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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:49:57,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:49:57,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:49:57,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:49:57,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:49:57,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:49:57,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:49:57,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:49:57,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:49:57,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:49:57,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:49:57,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:49:57,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:49:57,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:49:57,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:49:57,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:49:57,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:49:57,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:49:57,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:49:57,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:49:57,075 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:49:57,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:49:57,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:49:57,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:49:57,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:49:57,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:49:57,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:49:57,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:49:57,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:49:57,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:49:57,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:49:57,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:49:57,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:49:57,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:49:57,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:49:57,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:49:57,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:49:57,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:49:57,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:49:57,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:49:57,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:49:57,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:49:57,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:49:57,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:49:57,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:49:57,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:49:57,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:49:57,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:49:57,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:49:57,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:49:57,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:49:57,128 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:49:57,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:49:57,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:49:57,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:49:57,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:49:57,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:49:57,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:49:57,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:49:57,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:49:57,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:49:57,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:49:57,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:49:57,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:49:57,140 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:49:57,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:49:57,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:49:57,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:49:57,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:49:57,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:49:57,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:49:57,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:49:57,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:49:57,142 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:49:57,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:49:57,143 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:49:57,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:49:57,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:49:57,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:49:57,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2022-07-21 01:49:57,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:49:57,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:49:57,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:49:57,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:49:57,491 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:49:57,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2022-07-21 01:49:57,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c720278/93a0a34bc79d4893b79570010450ddfc/FLAGcf77a249d [2022-07-21 01:49:58,034 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:49:58,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2022-07-21 01:49:58,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c720278/93a0a34bc79d4893b79570010450ddfc/FLAGcf77a249d [2022-07-21 01:49:58,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c720278/93a0a34bc79d4893b79570010450ddfc [2022-07-21 01:49:58,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:49:58,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:49:58,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:49:58,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:49:58,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:49:58,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad7957f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58, skipping insertion in model container [2022-07-21 01:49:58,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:49:58,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:49:58,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2022-07-21 01:49:58,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:49:58,671 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:49:58,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2022-07-21 01:49:58,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:49:58,762 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:49:58,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58 WrapperNode [2022-07-21 01:49:58,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:49:58,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:49:58,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:49:58,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:49:58,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,822 INFO L137 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 148 [2022-07-21 01:49:58,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:49:58,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:49:58,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:49:58,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:49:58,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:49:58,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:49:58,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:49:58,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:49:58,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (1/1) ... [2022-07-21 01:49:58,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:49:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:49:58,925 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 01:49:58,928 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 01:49:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:49:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:49:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:49:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-07-21 01:49:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 01:49:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:49:58,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:49:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-07-21 01:49:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 01:49:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:49:58,957 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-07-21 01:49:58,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-07-21 01:49:59,042 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:49:59,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:50:09,627 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:50:09,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:50:09,633 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-21 01:50:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:50:09 BoogieIcfgContainer [2022-07-21 01:50:09,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:50:09,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:50:09,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:50:09,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:50:09,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:49:58" (1/3) ... [2022-07-21 01:50:09,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a188933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:50:09, skipping insertion in model container [2022-07-21 01:50:09,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:49:58" (2/3) ... [2022-07-21 01:50:09,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a188933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:50:09, skipping insertion in model container [2022-07-21 01:50:09,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:50:09" (3/3) ... [2022-07-21 01:50:09,647 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2022-07-21 01:50:09,677 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:50:09,677 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:50:09,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:50:09,751 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@70983b5f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f955459 [2022-07-21 01:50:09,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:50:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:50:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 01:50:09,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:50:09,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:50:09,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:50:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:50:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1029505661, now seen corresponding path program 1 times [2022-07-21 01:50:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:50:09,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469984472] [2022-07-21 01:50:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:50:09,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:50:09,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:50:09,784 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 01:50:09,785 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 01:50:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:50:10,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:50:10,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:50:10,315 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 01:50:10,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:50:10,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:50:10,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469984472] [2022-07-21 01:50:10,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469984472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:50:10,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:50:10,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:50:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513948183] [2022-07-21 01:50:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:50:10,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:50:10,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:50:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:50:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:50:10,347 INFO L87 Difference]: Start difference. First operand has 58 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 54 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:50:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:50:10,368 INFO L93 Difference]: Finished difference Result 114 states and 182 transitions. [2022-07-21 01:50:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:50:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-21 01:50:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:50:10,376 INFO L225 Difference]: With dead ends: 114 [2022-07-21 01:50:10,377 INFO L226 Difference]: Without dead ends: 55 [2022-07-21 01:50:10,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 01:50:10,383 INFO L413 NwaCegarLoop]: 76 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, 76 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 01:50:10,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:50:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-21 01:50:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-07-21 01:50:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:50:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2022-07-21 01:50:10,416 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 10 [2022-07-21 01:50:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:50:10,416 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2022-07-21 01:50:10,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:50:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2022-07-21 01:50:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:50:10,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:50:10,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:50:10,445 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 01:50:10,631 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 01:50:10,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:50:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:50:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1305801536, now seen corresponding path program 1 times [2022-07-21 01:50:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:50:10,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240357415] [2022-07-21 01:50:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:50:10,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:50:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:50:10,635 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 01:50:10,637 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 01:50:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:50:11,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 01:50:11,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:50:11,325 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 01:50:11,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:50:11,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:50:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240357415] [2022-07-21 01:50:11,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240357415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:50:11,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:50:11,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:50:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534387956] [2022-07-21 01:50:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:50:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:50:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:50:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:50:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:50:11,336 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:50:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:50:11,437 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2022-07-21 01:50:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:50:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2022-07-21 01:50:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:50:11,439 INFO L225 Difference]: With dead ends: 60 [2022-07-21 01:50:11,439 INFO L226 Difference]: Without dead ends: 57 [2022-07-21 01:50:11,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:50:11,441 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:50:11,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 199 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-07-21 01:50:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-21 01:50:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-21 01:50:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:50:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2022-07-21 01:50:11,449 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 11 [2022-07-21 01:50:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:50:11,450 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2022-07-21 01:50:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:50:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2022-07-21 01:50:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:50:11,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:50:11,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:50:11,478 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 01:50:11,671 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 01:50:11,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:50:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:50:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1303954494, now seen corresponding path program 1 times [2022-07-21 01:50:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:50:11,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760031055] [2022-07-21 01:50:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:50:11,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:50:11,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:50:11,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:50:11,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:50:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:50:12,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 01:50:12,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:50:12,476 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 01:50:12,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:50:12,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:50:12,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760031055] [2022-07-21 01:50:12,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760031055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:50:12,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:50:12,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 01:50:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090631702] [2022-07-21 01:50:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:50:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 01:50:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:50:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 01:50:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:50:12,479 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:50:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:50:12,488 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2022-07-21 01:50:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 01:50:12,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2022-07-21 01:50:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:50:12,489 INFO L225 Difference]: With dead ends: 75 [2022-07-21 01:50:12,489 INFO L226 Difference]: Without dead ends: 66 [2022-07-21 01:50:12,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 01:50:12,491 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 16 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:50:12,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 200 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-07-21 01:50:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-21 01:50:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-07-21 01:50:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:50:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2022-07-21 01:50:12,498 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 11 [2022-07-21 01:50:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:50:12,499 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2022-07-21 01:50:12,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:50:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2022-07-21 01:50:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 01:50:12,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:50:12,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:50:12,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:50:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:50:12,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:50:12,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:50:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1098932832, now seen corresponding path program 1 times [2022-07-21 01:50:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:50:12,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704373273] [2022-07-21 01:50:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:50:12,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:50:12,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:50:12,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:50:12,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:50:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:50:13,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:50:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:50:13,688 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 01:50:13,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:50:13,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:50:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704373273] [2022-07-21 01:50:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704373273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:50:13,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:50:13,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:50:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251961283] [2022-07-21 01:50:13,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:50:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:50:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:50:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:50:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:50:13,691 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 01:50:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:50:13,695 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2022-07-21 01:50:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:50:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) Word has length 11 [2022-07-21 01:50:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:50:13,696 INFO L225 Difference]: With dead ends: 64 [2022-07-21 01:50:13,696 INFO L226 Difference]: Without dead ends: 16 [2022-07-21 01:50:13,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:50:13,697 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:50:13,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-07-21 01:50:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-21 01:50:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-21 01:50:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 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 01:50:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2022-07-21 01:50:13,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2022-07-21 01:50:13,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:50:13,701 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2022-07-21 01:50:13,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 01:50:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2022-07-21 01:50:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:50:13,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:50:13,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:50:13,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:50:13,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:50:13,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:50:13,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:50:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1217406699, now seen corresponding path program 1 times [2022-07-21 01:50:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:50:13,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481462512] [2022-07-21 01:50:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:50:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:50:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:50:13,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:50:13,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 01:50:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:50:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 01:50:14,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:50:15,565 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 01:50:15,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:50:15,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:50:15,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481462512] [2022-07-21 01:50:15,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481462512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:50:15,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:50:15,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 01:50:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544788464] [2022-07-21 01:50:15,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:50:15,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 01:50:15,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:50:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 01:50:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 01:50:15,567 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 01:50:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:50:15,834 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2022-07-21 01:50:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 01:50:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2022-07-21 01:50:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:50:15,834 INFO L225 Difference]: With dead ends: 16 [2022-07-21 01:50:15,834 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 01:50:15,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:50:15,836 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:50:15,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-07-21 01:50:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 01:50:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 01:50:15,837 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 01:50:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 01:50:15,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-07-21 01:50:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:50:15,837 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 01:50:15,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 01:50:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 01:50:15,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 01:50:15,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:50:15,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 01:50:16,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:50:16,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 01:50:16,320 INFO L902 garLoopResultBuilder]: At program point L188(lines 173 189) the Hoare annotation is: true [2022-07-21 01:50:16,320 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L143(lines 143 147) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L143-1(lines 133 158) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L143-2(lines 143 147) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 108) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 105) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L164-1(lines 164 168) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L895 garLoopResultBuilder]: At program point L164-2(lines 164 168) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short15#1| (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___signbit_float_~x#1|))) [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L164-3(lines 164 168) no Hoare annotation was computed. [2022-07-21 01:50:16,321 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 184) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L895 garLoopResultBuilder]: At program point L136(line 136) the Hoare annotation is: false [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point L136-1(line 136) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point L95-1(lines 95 99) no Hoare annotation was computed. [2022-07-21 01:50:16,322 INFO L895 garLoopResultBuilder]: At program point L95-2(lines 95 99) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0))) [2022-07-21 01:50:16,322 INFO L895 garLoopResultBuilder]: At program point L157(lines 92 159) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___ieee754_acosf_#res#1|)) [2022-07-21 01:50:16,322 INFO L899 garLoopResultBuilder]: For program point L95-3(lines 95 99) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L895 garLoopResultBuilder]: At program point L170(lines 161 171) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) |ULTIMATE.start_main_#t~short15#1|) [2022-07-21 01:50:16,323 INFO L895 garLoopResultBuilder]: At program point L129(line 129) the Hoare annotation is: false [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L129-1(line 129) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L121(lines 121 158) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L183(line 183) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L183-2(lines 183 186) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 158) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L138-1(lines 138 142) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L895 garLoopResultBuilder]: At program point L138-2(lines 138 142) the Hoare annotation is: false [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 108) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2022-07-21 01:50:16,323 INFO L902 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: true [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L902 garLoopResultBuilder]: At program point __ieee754_sqrtfENTRY(lines 16 81) the Hoare annotation is: true [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 16 81) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2022-07-21 01:50:16,324 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 16 81) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L902 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: true [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L902 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: true [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L902 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: true [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2022-07-21 01:50:16,325 INFO L899 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2022-07-21 01:50:16,329 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-21 01:50:16,331 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:50:16,337 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,342 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,344 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,346 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,347 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,347 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:50:16 BoogieIcfgContainer [2022-07-21 01:50:16,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:50:16,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:50:16,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:50:16,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:50:16,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:50:09" (3/4) ... [2022-07-21 01:50:16,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 01:50:16,365 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2022-07-21 01:50:16,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-07-21 01:50:16,373 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 01:50:16,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-21 01:50:16,375 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 01:50:16,398 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) [2022-07-21 01:50:16,399 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) [2022-07-21 01:50:16,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: aux-res == 0.0f && __signbit_float(res) == 0-aux && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) [2022-07-21 01:50:16,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0bv32 && aux-res == 0.0f && __signbit_float(res) == 0-aux [2022-07-21 01:50:16,430 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 01:50:16,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:50:16,431 INFO L158 Benchmark]: Toolchain (without parser) took 18000.80ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 35.1MB in the beginning and 38.7MB in the end (delta: -3.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,432 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:50:16,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.85ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 34.9MB in the beginning and 60.4MB in the end (delta: -25.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.61ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,434 INFO L158 Benchmark]: Boogie Preprocessor took 59.42ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,435 INFO L158 Benchmark]: RCFGBuilder took 10746.50ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 38.2MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,435 INFO L158 Benchmark]: TraceAbstraction took 6708.39ms. Allocated memory is still 79.7MB. Free memory was 37.6MB in the beginning and 42.8MB in the end (delta: -5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:50:16,435 INFO L158 Benchmark]: Witness Printer took 81.92ms. Allocated memory is still 79.7MB. Free memory was 42.8MB in the beginning and 38.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 01:50:16,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.85ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 34.9MB in the beginning and 60.4MB in the end (delta: -25.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.61ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.42ms. Allocated memory is still 79.7MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10746.50ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 38.2MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6708.39ms. Allocated memory is still 79.7MB. Free memory was 37.6MB in the beginning and 42.8MB in the end (delta: -5.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 81.92ms. Allocated memory is still 79.7MB. Free memory was 42.8MB in the beginning and 38.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 184]: 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 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 569 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 240 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 34 HoareAnnotationTreeSize, 28 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 15 QuantifiedInterpolants, 191 SizeOfPredicates, 25 NumberOfNonLiveVariables, 286 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant [2022-07-21 01:50:16,452 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,452 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: aux-res == 0.0f && __signbit_float(res) == 0-aux && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 92]: Loop Invariant [2022-07-21 01:50:16,453 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,453 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 95]: Loop Invariant [2022-07-21 01:50:16,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-07-21 01:50:16,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: \result == 0bv32 && aux-res == 0.0f && __signbit_float(res) == 0-aux RESULT: Ultimate proved your program to be correct! [2022-07-21 01:50:16,652 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