./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:07:21,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:07:21,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:07:21,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:07:21,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:07:21,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:07:21,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:07:21,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:07:21,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:07:21,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:07:21,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:07:21,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:07:21,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:07:21,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:07:21,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:07:21,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:07:21,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:07:21,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:07:21,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:07:21,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:07:21,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:07:21,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:07:21,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:07:21,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:07:21,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:07:21,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:07:21,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:07:21,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:07:21,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:07:21,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:07:21,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:07:21,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:07:21,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:07:21,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:07:21,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:07:21,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:07:21,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:07:21,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:07:21,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:07:21,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:07:21,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:07:21,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:07:21,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:07:21,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:07:21,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:07:21,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:07:21,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:07:21,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:07:21,953 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:07:21,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:07:21,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:07:21,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:07:21,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:07:21,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:07:21,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:07:21,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:07:21,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:07:21,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:07:21,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:21,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:07:21,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:07:21,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:07:21,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:07:21,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:07:21,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:07:21,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:07:21,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-08-26 00:07:22,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:07:22,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:07:22,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:07:22,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:07:22,235 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:07:22,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-08-26 00:07:22,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46b8fcd2/c708bc979e1c4356be196c1e8045b86a/FLAG7b6c75b8b [2021-08-26 00:07:22,604 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:07:22,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-08-26 00:07:22,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46b8fcd2/c708bc979e1c4356be196c1e8045b86a/FLAG7b6c75b8b [2021-08-26 00:07:23,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46b8fcd2/c708bc979e1c4356be196c1e8045b86a [2021-08-26 00:07:23,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:07:23,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:07:23,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:23,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:07:23,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:07:23,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42994b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23, skipping insertion in model container [2021-08-26 00:07:23,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:07:23,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:07:23,188 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-08-26 00:07:23,191 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-08-26 00:07:23,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:23,197 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:07:23,205 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-08-26 00:07:23,206 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-08-26 00:07:23,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:23,214 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:07:23,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23 WrapperNode [2021-08-26 00:07:23,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:23,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:23,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:07:23,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:07:23,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:23,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:07:23,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:07:23,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:07:23,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:07:23,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:07:23,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:07:23,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:07:23,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (1/1) ... [2021-08-26 00:07:23,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:07:23,308 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) [2021-08-26 00:07:23,327 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 [2021-08-26 00:07:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:07:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:07:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:07:23,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:07:23,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:07:23,493 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 00:07:23,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:23 BoogieIcfgContainer [2021-08-26 00:07:23,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:07:23,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:07:23,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:07:23,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:07:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:07:23" (1/3) ... [2021-08-26 00:07:23,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c7c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:23, skipping insertion in model container [2021-08-26 00:07:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:23" (2/3) ... [2021-08-26 00:07:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c7c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:23, skipping insertion in model container [2021-08-26 00:07:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:23" (3/3) ... [2021-08-26 00:07:23,501 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-08-26 00:07:23,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:07:23,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 00:07:23,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:07:23,549 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:07:23,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 00:07:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-08-26 00:07:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:07:23,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:07:23,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:07:23,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:07:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:07:23,568 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:07:23,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:07:23,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050664437] [2021-08-26 00:07:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:07:23,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:07:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:07:23,652 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:07:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:07:23,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:07:23,699 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:07:23,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:23,701 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:23,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:07:23,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:07:23,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:07:23 BoogieIcfgContainer [2021-08-26 00:07:23,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:07:23,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:07:23,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:07:23,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:07:23,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:23" (3/4) ... [2021-08-26 00:07:23,723 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:07:23,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:07:23,726 INFO L168 Benchmark]: Toolchain (without parser) took 655.51 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.2 MB in the beginning and 50.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 634.5 kB. Max. memory is 16.1 GB. [2021-08-26 00:07:23,726 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:23,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.87 ms. Allocated memory is still 54.5 MB. Free memory was 31.9 MB in the beginning and 35.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:23,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.27 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 35.7 MB in the beginning and 57.5 MB in the end (delta: -21.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:23,728 INFO L168 Benchmark]: Boogie Preprocessor took 11.27 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 56.6 MB in the end (delta: 922.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:23,730 INFO L168 Benchmark]: RCFGBuilder took 211.95 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 46.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:23,733 INFO L168 Benchmark]: TraceAbstraction took 221.45 ms. Allocated memory is still 73.4 MB. Free memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: -5.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:23,734 INFO L168 Benchmark]: Witness Printer took 3.39 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 50.4 MB in the end (delta: 452.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:23,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 143.87 ms. Allocated memory is still 54.5 MB. Free memory was 31.9 MB in the beginning and 35.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.27 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 35.7 MB in the beginning and 57.5 MB in the end (delta: -21.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.27 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 56.6 MB in the end (delta: 922.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 211.95 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 46.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 221.45 ms. Allocated memory is still 73.4 MB. Free memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: -5.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.39 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 50.4 MB in the end (delta: 452.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L12] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 162.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.4ms SsaConstructionTime, 26.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 00:07:23,769 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:07:26,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:07:26,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:07:26,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:07:26,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:07:26,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:07:26,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:07:26,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:07:26,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:07:26,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:07:26,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:07:26,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:07:26,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:07:26,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:07:26,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:07:26,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:07:26,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:07:26,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:07:26,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:07:26,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:07:26,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:07:26,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:07:26,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:07:26,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:07:26,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:07:26,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:07:26,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:07:26,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:07:26,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:07:26,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:07:26,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:07:26,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:07:26,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:07:26,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:07:26,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:07:26,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:07:26,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:07:26,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:07:26,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:07:26,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:07:26,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:07:26,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:07:26,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:07:26,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:07:26,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:07:26,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:07:26,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:07:26,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:07:26,373 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:07:26,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:07:26,374 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:07:26,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:07:26,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:07:26,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:07:26,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:07:26,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:07:26,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:07:26,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:07:26,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:07:26,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:07:26,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:07:26,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:07:26,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:07:26,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:07:26,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:07:26,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:26,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:07:26,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:07:26,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:07:26,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:07:26,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:07:26,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:07:26,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:07:26,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:07:26,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2021-08-26 00:07:26,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:07:26,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:07:26,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:07:26,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:07:26,829 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:07:26,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-08-26 00:07:26,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba87a08cb/fe854a5d278c4eb2abecc60e285e7a70/FLAG449b47a24 [2021-08-26 00:07:27,437 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:07:27,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c [2021-08-26 00:07:27,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba87a08cb/fe854a5d278c4eb2abecc60e285e7a70/FLAG449b47a24 [2021-08-26 00:07:27,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba87a08cb/fe854a5d278c4eb2abecc60e285e7a70 [2021-08-26 00:07:27,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:07:27,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:07:27,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:27,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:07:27,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:07:27,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:27" (1/1) ... [2021-08-26 00:07:27,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4f4f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:27, skipping insertion in model container [2021-08-26 00:07:27,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:27" (1/1) ... [2021-08-26 00:07:27,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:07:27,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:07:28,062 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-08-26 00:07:28,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-08-26 00:07:28,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:28,077 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:07:28,085 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2021-08-26 00:07:28,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2021-08-26 00:07:28,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:28,103 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:07:28,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28 WrapperNode [2021-08-26 00:07:28,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:28,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:28,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:07:28,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:07:28,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:28,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:07:28,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:07:28,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:07:28,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:07:28,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:07:28,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:07:28,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:07:28,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (1/1) ... [2021-08-26 00:07:28,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:07:28,219 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) [2021-08-26 00:07:28,280 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 [2021-08-26 00:07:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:07:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:07:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:07:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:07:28,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:07:28,788 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 00:07:28,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:28 BoogieIcfgContainer [2021-08-26 00:07:28,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:07:28,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:07:28,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:07:28,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:07:28,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:07:27" (1/3) ... [2021-08-26 00:07:28,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b45b951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:28, skipping insertion in model container [2021-08-26 00:07:28,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:28" (2/3) ... [2021-08-26 00:07:28,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b45b951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:28, skipping insertion in model container [2021-08-26 00:07:28,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:28" (3/3) ... [2021-08-26 00:07:28,794 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2021-08-26 00:07:28,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:07:28,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 00:07:28,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:07:28,829 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:07:28,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 00:07:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-08-26 00:07:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:07:28,839 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:07:28,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:07:28,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:07:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:07:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:07:28,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:07:28,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500918418] [2021-08-26 00:07:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:07:28,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:07:28,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:07:28,853 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) [2021-08-26 00:07:28,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:07:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:07:28,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 00:07:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:07:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:07:29,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:07:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:07:29,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:07:29,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500918418] [2021-08-26 00:07:29,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500918418] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:07:29,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:07:29,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-26 00:07:29,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638489953] [2021-08-26 00:07:29,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 00:07:29,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:07:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 00:07:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 00:07:29,269 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:07:29,499 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-26 00:07:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 00:07:29,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-26 00:07:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:07:29,504 INFO L225 Difference]: With dead ends: 17 [2021-08-26 00:07:29,504 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 00:07:29,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 00:07:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 00:07:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 00:07:29,519 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) [2021-08-26 00:07:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 00:07:29,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-08-26 00:07:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:07:29,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 00:07:29,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 00:07:29,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 00:07:29,523 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:29,523 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:29,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-26 00:07:29,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:07:29,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 00:07:29,737 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-26 00:07:29,738 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-08-26 00:07:29,738 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 00:07:29,738 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-08-26 00:07:29,738 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-08-26 00:07:29,738 INFO L857 garLoopResultBuilder]: For program point L4(lines 4 20) no Hoare annotation was computed. [2021-08-26 00:07:29,741 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:07:29,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:07:29 BoogieIcfgContainer [2021-08-26 00:07:29,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:07:29,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:07:29,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:07:29,743 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:07:29,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:28" (3/4) ... [2021-08-26 00:07:29,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 00:07:29,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 00:07:29,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 00:07:29,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 00:07:29,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:07:29,771 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 00:07:29,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:07:29,772 INFO L168 Benchmark]: Toolchain (without parser) took 1848.95 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.6 MB in the beginning and 42.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,772 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 26.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:29,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.41 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 39.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,773 INFO L168 Benchmark]: Boogie Preprocessor took 28.63 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 36.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:29,774 INFO L168 Benchmark]: RCFGBuilder took 624.56 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.7 MB in the end (delta: -617.2 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,774 INFO L168 Benchmark]: TraceAbstraction took 952.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 45.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,774 INFO L168 Benchmark]: Witness Printer took 27.85 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 42.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:29,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 26.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.41 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 39.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.63 ms. Allocated memory is still 54.5 MB. Free memory was 37.5 MB in the beginning and 36.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 624.56 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.7 MB in the end (delta: -617.2 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 952.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 45.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.85 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 42.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 917.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.1ms, AutomataDifference: 245.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2.8ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 190.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 60.4ms SatisfiabilityAnalysisTime, 306.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 00:07:29,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...