./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/double_req_bl_1051.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 b42939eee3e11712ad53342d1b2656dec849a2d0 ............................................................................................................................................................................................................................................................................................................. 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/float-newlib/double_req_bl_1051.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 b42939eee3e11712ad53342d1b2656dec849a2d0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:22:57,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:22:57,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:22:57,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:22:57,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:22:57,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:22:57,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:22:57,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:22:57,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:22:57,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:22:57,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:22:57,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:22:57,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:22:57,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:22:57,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:22:57,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:22:57,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:22:57,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:22:57,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:22:57,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:22:57,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:22:57,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:22:57,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:22:57,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:22:57,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:22:57,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:22:57,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:22:57,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:22:57,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:22:57,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:22:57,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:22:57,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:22:57,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:22:57,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:22:57,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:22:57,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:22:57,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:22:57,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:22:57,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:22:57,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:22:57,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:22:57,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:22:57,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:22:57,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:22:57,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:22:57,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:22:57,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:22:57,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:22:57,880 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:22:57,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:22:57,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:22:57,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:22:57,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:22:57,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:22:57,882 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:22:57,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:22:57,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:22:57,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:22:57,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:22:57,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:22:57,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:22:57,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:22:57,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:22:57,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:22:57,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:22:57,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:22:57,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:22:57,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2021-08-29 08:22:58,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:22:58,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:22:58,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:22:58,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:22:58,236 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:22:58,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-08-29 08:22:58,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787025640/d89fdf7cebc24b7baae6612ba7dd904c/FLAG3ba64dcc8 [2021-08-29 08:22:58,721 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:22:58,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-08-29 08:22:58,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787025640/d89fdf7cebc24b7baae6612ba7dd904c/FLAG3ba64dcc8 [2021-08-29 08:22:59,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/787025640/d89fdf7cebc24b7baae6612ba7dd904c [2021-08-29 08:22:59,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:22:59,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:22:59,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:22:59,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:22:59,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:22:59,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6b4b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59, skipping insertion in model container [2021-08-29 08:22:59,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:22:59,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:22:59,280 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/float-newlib/double_req_bl_1051.c[2106,2119] [2021-08-29 08:22:59,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:22:59,289 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:22:59,329 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/float-newlib/double_req_bl_1051.c[2106,2119] [2021-08-29 08:22:59,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:22:59,354 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:22:59,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59 WrapperNode [2021-08-29 08:22:59,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:22:59,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:22:59,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:22:59,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:22:59,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:22:59,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:22:59,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:22:59,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:22:59,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:22:59,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:22:59,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:22:59,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:22:59,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (1/1) ... [2021-08-29 08:22:59,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:22:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:22:59,478 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) [2021-08-29 08:22:59,506 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 [2021-08-29 08:22:59,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:22:59,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:22:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-29 08:22:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 08:22:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-29 08:22:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:22:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:22:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 08:22:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:22:59,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:22:59,768 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-29 08:22:59,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:22:59 BoogieIcfgContainer [2021-08-29 08:22:59,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:22:59,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:22:59,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:22:59,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:22:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:22:59" (1/3) ... [2021-08-29 08:22:59,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2b2b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:22:59, skipping insertion in model container [2021-08-29 08:22:59,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:22:59" (2/3) ... [2021-08-29 08:22:59,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2b2b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:22:59, skipping insertion in model container [2021-08-29 08:22:59,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:22:59" (3/3) ... [2021-08-29 08:22:59,779 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2021-08-29 08:22:59,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:22:59,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:22:59,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:22:59,841 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 [2021-08-29 08:22:59,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:22:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-08-29 08:22:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:22:59,863 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:22:59,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:22:59,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:22:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:22:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2021-08-29 08:22:59,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:22:59,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399357987] [2021-08-29 08:22:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:22:59,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:22:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:00,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:23:00,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399357987] [2021-08-29 08:23:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399357987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:00,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:00,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:23:00,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819893314] [2021-08-29 08:23:00,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:23:00,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:23:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:23:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:00,046 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-08-29 08:23:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:00,128 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-08-29 08:23:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:23:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-08-29 08:23:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:00,161 INFO L225 Difference]: With dead ends: 66 [2021-08-29 08:23:00,161 INFO L226 Difference]: Without dead ends: 31 [2021-08-29 08:23:00,163 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:00,166 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.86ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:00,167 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 64.86ms Time] [2021-08-29 08:23:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-29 08:23:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-29 08:23:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2021-08-29 08:23:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-08-29 08:23:00,223 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2021-08-29 08:23:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:00,223 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-08-29 08:23:00,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-08-29 08:23:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-08-29 08:23:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 08:23:00,224 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:00,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:00,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:23:00,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2021-08-29 08:23:00,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:23:00,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563926008] [2021-08-29 08:23:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:00,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:23:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:23:00,288 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:23:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:23:00,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:23:00,344 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:23:00,346 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:23:00,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:23:00,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:23:00,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:23:00 BoogieIcfgContainer [2021-08-29 08:23:00,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:23:00,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:23:00,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:23:00,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:23:00,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:22:59" (3/4) ... [2021-08-29 08:23:00,378 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:23:00,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:23:00,380 INFO L158 Benchmark]: Toolchain (without parser) took 1272.25ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 41.9MB in the end (delta: -6.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-08-29 08:23:00,381 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:00,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.42ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:23:00,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.31ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 37.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:00,387 INFO L158 Benchmark]: Boogie Preprocessor took 35.90ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 36.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:23:00,388 INFO L158 Benchmark]: RCFGBuilder took 327.94ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 53.0MB in the end (delta: -16.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-08-29 08:23:00,388 INFO L158 Benchmark]: TraceAbstraction took 601.74ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 42.3MB in the end (delta: 10.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-08-29 08:23:00,388 INFO L158 Benchmark]: Witness Printer took 3.28ms. Allocated memory is still 71.3MB. Free memory was 42.3MB in the beginning and 41.9MB in the end (delta: 329.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:00,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.42ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.31ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 37.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.90ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 36.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.94ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 53.0MB in the end (delta: -16.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 601.74ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 42.3MB in the end (delta: 10.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 3.28ms. Allocated memory is still 71.3MB. Free memory was 42.3MB in the beginning and 41.9MB in the end (delta: 329.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 95]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 82. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double res = floor_double(x); [L82] return x != x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] COND TRUE !isnan_double(res) [L95] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 519.31ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.81ms, AutomataDifference: 148.86ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.38ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 64.86ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 50.24ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 48 mSolverCounterSat, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 31.52ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.30ms SsaConstructionTime, 60.95ms SatisfiabilityAnalysisTime, 55.96ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 08:23:00,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:23:02,289 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 08:23:02,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:23:02,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:23:02,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:23:02,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:23:02,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:23:02,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:23:02,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:23:02,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:23:02,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:23:02,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:23:02,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:23:02,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:23:02,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:23:02,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:23:02,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:23:02,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:23:02,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:23:02,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:23:02,441 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:23:02,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:23:02,441 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:23:02,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:23:02,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:23:02,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:23:02,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:23:02,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:23:02,443 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:23:02,443 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:23:02,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:23:02,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:23:02,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:23:02,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:23:02,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:23:02,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:23:02,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:23:02,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:23:02,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:23:02,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:23:02,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:23:02,455 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:23:02,456 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:23:02,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:23:02,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:23:02,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:23:02,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2021-08-29 08:23:02,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:23:02,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:23:02,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:23:02,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:23:02,825 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:23:02,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-08-29 08:23:02,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5432f11b0/6ec3069df149463581fd47d1d43d97d1/FLAG2a2d926cc [2021-08-29 08:23:03,316 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:23:03,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2021-08-29 08:23:03,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5432f11b0/6ec3069df149463581fd47d1d43d97d1/FLAG2a2d926cc [2021-08-29 08:23:03,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5432f11b0/6ec3069df149463581fd47d1d43d97d1 [2021-08-29 08:23:03,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:23:03,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:23:03,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:23:03,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:23:03,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:23:03,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d819d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03, skipping insertion in model container [2021-08-29 08:23:03,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:23:03,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:23:03,483 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/float-newlib/double_req_bl_1051.c[2106,2119] [2021-08-29 08:23:03,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:23:03,501 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:23:03,584 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/float-newlib/double_req_bl_1051.c[2106,2119] [2021-08-29 08:23:03,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:23:03,602 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:23:03,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03 WrapperNode [2021-08-29 08:23:03,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:23:03,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:23:03,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:23:03,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:23:03,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:23:03,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:23:03,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:23:03,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:23:03,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:23:03,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:23:03,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:23:03,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:23:03,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (1/1) ... [2021-08-29 08:23:03,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:23:03,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:23:03,750 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) [2021-08-29 08:23:03,772 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 [2021-08-29 08:23:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-08-29 08:23:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:23:03,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 08:23:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:23:04,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:23:04,002 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-29 08:23:04,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:04 BoogieIcfgContainer [2021-08-29 08:23:04,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:23:04,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:23:04,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:23:04,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:23:04,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:23:03" (1/3) ... [2021-08-29 08:23:04,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f550bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:23:04, skipping insertion in model container [2021-08-29 08:23:04,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:03" (2/3) ... [2021-08-29 08:23:04,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f550bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:23:04, skipping insertion in model container [2021-08-29 08:23:04,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:04" (3/3) ... [2021-08-29 08:23:04,034 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2021-08-29 08:23:04,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:23:04,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:23:04,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:23:04,087 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 [2021-08-29 08:23:04,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:23:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-08-29 08:23:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:23:04,117 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:04,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:04,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2021-08-29 08:23:04,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:23:04,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992160067] [2021-08-29 08:23:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:04,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:23:04,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:23:04,146 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) [2021-08-29 08:23:04,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:23:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:04,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:23:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:23:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:04,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:23:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:04,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:23:04,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992160067] [2021-08-29 08:23:04,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992160067] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:04,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:04,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:23:04,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894212005] [2021-08-29 08:23:04,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:23:04,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:23:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:23:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:04,448 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-08-29 08:23:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:05,271 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-08-29 08:23:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:23:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-08-29 08:23:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:05,281 INFO L225 Difference]: With dead ends: 66 [2021-08-29 08:23:05,281 INFO L226 Difference]: Without dead ends: 31 [2021-08-29 08:23:05,284 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:05,286 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 732.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 803.47ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:05,287 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 803.47ms Time] [2021-08-29 08:23:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-29 08:23:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-29 08:23:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2021-08-29 08:23:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-08-29 08:23:05,346 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2021-08-29 08:23:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:05,347 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-08-29 08:23:05,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-08-29 08:23:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-08-29 08:23:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 08:23:05,358 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:05,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:05,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 08:23:05,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:23:05,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2021-08-29 08:23:05,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:23:05,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910741172] [2021-08-29 08:23:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:05,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:23:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:23:05,564 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) [2021-08-29 08:23:05,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:23:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:05,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 08:23:05,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:23:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:05,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:23:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:05,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:23:05,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910741172] [2021-08-29 08:23:05,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910741172] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:05,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:05,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-29 08:23:05,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873128111] [2021-08-29 08:23:05,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 08:23:05,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:23:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 08:23:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-29 08:23:05,977 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-29 08:23:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:06,847 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2021-08-29 08:23:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 08:23:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 12 [2021-08-29 08:23:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:06,848 INFO L225 Difference]: With dead ends: 42 [2021-08-29 08:23:06,848 INFO L226 Difference]: Without dead ends: 21 [2021-08-29 08:23:06,849 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 203.16ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-29 08:23:06,850 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 689.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 777.94ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:06,851 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 166 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 8 Unchecked, 777.94ms Time] [2021-08-29 08:23:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-29 08:23:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-29 08:23:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-08-29 08:23:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-29 08:23:06,854 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2021-08-29 08:23:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:06,854 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-29 08:23:06,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-08-29 08:23:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-29 08:23:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 08:23:06,855 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:06,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:06,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 08:23:07,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:23:07,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash -649399050, now seen corresponding path program 1 times [2021-08-29 08:23:07,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:23:07,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275506096] [2021-08-29 08:23:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:07,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:23:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:23:07,071 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) [2021-08-29 08:23:07,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 08:23:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:07,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 08:23:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:23:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:07,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:23:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:07,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:23:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275506096] [2021-08-29 08:23:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275506096] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-29 08:23:07,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484828249] [2021-08-29 08:23:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 08:23:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:23:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 08:23:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 08:23:07,582 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-08-29 08:23:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:07,852 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-08-29 08:23:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 08:23:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 [2021-08-29 08:23:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:07,854 INFO L225 Difference]: With dead ends: 29 [2021-08-29 08:23:07,854 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 08:23:07,854 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 135.20ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 08:23:07,855 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 266.30ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:07,855 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 38 Unchecked, 266.30ms Time] [2021-08-29 08:23:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 08:23:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 08:23:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 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) [2021-08-29 08:23:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-08-29 08:23:07,859 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 15 [2021-08-29 08:23:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:07,859 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-08-29 08:23:07,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-08-29 08:23:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-08-29 08:23:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 08:23:07,860 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:07,860 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:07,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 08:23:08,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:23:08,074 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash 101523525, now seen corresponding path program 1 times [2021-08-29 08:23:08,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:23:08,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704123410] [2021-08-29 08:23:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:08,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:23:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:23:08,076 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) [2021-08-29 08:23:08,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 08:23:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:08,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 08:23:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:23:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:08,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:23:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:08,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:23:08,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704123410] [2021-08-29 08:23:08,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704123410] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:08,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:08,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-08-29 08:23:08,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024789193] [2021-08-29 08:23:08,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 08:23:08,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:23:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 08:23:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:23:08,663 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-08-29 08:23:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:08,685 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-08-29 08:23:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 08:23:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 16 [2021-08-29 08:23:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:08,686 INFO L225 Difference]: With dead ends: 17 [2021-08-29 08:23:08,686 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 08:23:08,687 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.81ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:23:08,687 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 20.71ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:08,688 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18 Unknown, 0 Unchecked, 0.10ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 10 Unchecked, 20.71ms Time] [2021-08-29 08:23:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 08:23:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 08:23:08,689 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) [2021-08-29 08:23:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 08:23:08,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-29 08:23:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:08,689 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 08:23:08,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-08-29 08:23:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 08:23:08,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 08:23:08,692 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:23:08,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 08:23:08,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:23:08,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 08:23:08,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:23:08,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:23:08,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:23:08,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:23:08,964 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 67) no Hoare annotation was computed. [2021-08-29 08:23:08,965 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 97) no Hoare annotation was computed. [2021-08-29 08:23:08,965 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 08:23:08,965 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 08:23:08,965 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 71) no Hoare annotation was computed. [2021-08-29 08:23:08,965 INFO L854 garLoopResultBuilder]: At program point L78(lines 18 79) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_double_~x (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res|))) [2021-08-29 08:23:08,965 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 26) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_double_~x (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 37) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L72-1(lines 18 79) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L72-2(lines 72 77) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 65) no Hoare annotation was computed. [2021-08-29 08:23:08,966 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 36) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L64-2(lines 64 65) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L854 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L49(lines 49 71) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L861 garLoopResultBuilder]: At program point L99(lines 84 100) the Hoare annotation is: true [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 36) no Hoare annotation was computed. [2021-08-29 08:23:08,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 70) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 53) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 47) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 68) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 59 68) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-08-29 08:23:08,968 INFO L858 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-08-29 08:23:08,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:23:08,977 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,977 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,982 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,982 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,983 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,983 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:08,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:23:08 BoogieIcfgContainer [2021-08-29 08:23:08,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:23:08,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:23:08,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:23:08,985 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:23:08,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:04" (3/4) ... [2021-08-29 08:23:08,987 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 08:23:08,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-29 08:23:08,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 08:23:08,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:23:08,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:23:09,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-08-29 08:23:09,016 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-08-29 08:23:09,016 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-08-29 08:23:09,026 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 08:23:09,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:23:09,027 INFO L158 Benchmark]: Toolchain (without parser) took 5687.09ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.6MB in the beginning and 37.5MB in the end (delta: 109.9kB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,027 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:09,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.22ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 40.9MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.84ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:09,028 INFO L158 Benchmark]: Boogie Preprocessor took 57.75ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 37.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,028 INFO L158 Benchmark]: RCFGBuilder took 288.66ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 26.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,029 INFO L158 Benchmark]: TraceAbstraction took 4956.59ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 40.7MB in the end (delta: 12.7MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,029 INFO L158 Benchmark]: Witness Printer took 42.12ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 37.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 08:23:09,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.22ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 40.9MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.84ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.75ms. Allocated memory is still 58.7MB. Free memory was 39.3MB in the beginning and 37.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.66ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 26.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4956.59ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 40.7MB in the end (delta: 12.7MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Witness Printer took 42.12ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 37.5MB in the end (delta: 3.3MB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 95]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4895.05ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 28.86ms, AutomataDifference: 2050.19ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 71.15ms, InitialAbstractionConstructionTime: 13.01ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 1868.42ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1692.47ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 56 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 232 IncrementalHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 232 mSolverCounterSat, 3.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 514.25ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 38.48ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 25.62ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 40.04ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 58.89ms SsaConstructionTime, 282.70ms SatisfiabilityAnalysisTime, 1300.34ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 100 ConstructedInterpolants, 18 QuantifiedInterpolants, 440 SizeOfPredicates, 26 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: 18]: Loop Invariant [2021-08-29 08:23:09,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:09,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:09,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:09,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 21]: Loop Invariant [2021-08-29 08:23:09,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-29 08:23:09,046 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 08:23:09,081 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...