./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0832b.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 712005727f62c46a009e5aa995b5d1c386dc6cd1 ......................................................................................................................................................................................................................................................................................................................... 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/float_req_bl_0832b.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 712005727f62c46a009e5aa995b5d1c386dc6cd1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:49:01,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:49:01,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:49:01,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:49:01,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:49:01,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:49:01,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:49:01,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:49:01,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:49:01,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:49:01,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:49:01,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:49:01,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:49:01,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:49:01,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:49:01,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:49:01,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:49:01,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:49:01,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:49:01,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:49:01,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:49:01,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:49:01,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:49:01,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:49:01,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:49:01,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:49:01,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:49:01,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:49:01,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:49:01,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:49:01,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:49:01,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:49:01,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:49:01,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:49:01,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:49:01,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:49:01,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:49:01,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:49:01,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:49:01,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:49:01,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:49:01,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:49:01,470 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:49:01,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:49:01,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:49:01,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:49:01,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:49:01,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:49:01,474 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:49:01,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:49:01,474 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:49:01,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:49:01,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:49:01,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:49:01,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:49:01,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:49:01,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:49:01,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:49:01,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:01,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:49:01,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:49:01,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:49:01,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712005727f62c46a009e5aa995b5d1c386dc6cd1 [2021-08-26 01:49:01,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:49:01,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:49:01,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:49:01,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:49:01,782 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:49:01,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-08-26 01:49:01,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62572dd9/6a9b99b6f91c448ebfee84112ecab0f1/FLAG85ef912d7 [2021-08-26 01:49:02,323 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:49:02,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-08-26 01:49:02,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62572dd9/6a9b99b6f91c448ebfee84112ecab0f1/FLAG85ef912d7 [2021-08-26 01:49:02,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62572dd9/6a9b99b6f91c448ebfee84112ecab0f1 [2021-08-26 01:49:02,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:49:02,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:49:02,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:02,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:49:02,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:49:02,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:02,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a83d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02, skipping insertion in model container [2021-08-26 01:49:02,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:02,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:49:02,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:49:02,898 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/float_req_bl_0832b.c[3181,3194] [2021-08-26 01:49:02,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:02,907 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:49:02,943 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/float_req_bl_0832b.c[3181,3194] [2021-08-26 01:49:02,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:02,972 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:49:02,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02 WrapperNode [2021-08-26 01:49:02,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:02,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:02,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:49:02,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:49:02,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:02,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:03,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:49:03,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:49:03,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:49:03,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:49:03,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:49:03,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:49:03,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:49:03,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (1/1) ... [2021-08-26 01:49:03,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:03,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:49:03,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:49:03,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:49:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:49:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:49:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:49:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:49:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:49:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:49:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:49:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:49:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-26 01:49:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:49:03,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:49:03,541 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:49:03,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:03 BoogieIcfgContainer [2021-08-26 01:49:03,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:49:03,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:49:03,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:49:03,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:49:03,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:49:02" (1/3) ... [2021-08-26 01:49:03,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b829544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:03, skipping insertion in model container [2021-08-26 01:49:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:02" (2/3) ... [2021-08-26 01:49:03,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b829544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:03, skipping insertion in model container [2021-08-26 01:49:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:03" (3/3) ... [2021-08-26 01:49:03,549 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2021-08-26 01:49:03,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:49:03,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:49:03,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:49:03,596 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:49:03,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:49:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 01:49:03,613 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:03,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:03,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-08-26 01:49:03,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:49:03,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320226094] [2021-08-26 01:49:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:03,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:49:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:03,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:49:03,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320226094] [2021-08-26 01:49:03,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320226094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:03,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:03,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:49:03,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955109343] [2021-08-26 01:49:03,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:49:03,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:49:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:49:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:03,767 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:03,780 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-08-26 01:49:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:49:03,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 01:49:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:03,788 INFO L225 Difference]: With dead ends: 70 [2021-08-26 01:49:03,789 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 01:49:03,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 01:49:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 01:49:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-08-26 01:49:03,823 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-08-26 01:49:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:03,823 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-08-26 01:49:03,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-08-26 01:49:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:49:03,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:03,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:03,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:49:03,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:03,826 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-08-26 01:49:03,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:49:03,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614351423] [2021-08-26 01:49:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:03,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:49:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:49:03,884 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:49:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:49:03,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:49:03,969 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:49:03,971 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:49:03,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:49:03,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:49:04,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:49:04 BoogieIcfgContainer [2021-08-26 01:49:04,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:49:04,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:49:04,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:49:04,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:49:04,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:03" (3/4) ... [2021-08-26 01:49:04,031 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:49:04,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:49:04,033 INFO L168 Benchmark]: Toolchain (without parser) took 1328.49 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 43.5 MB in the beginning and 57.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:04,034 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:04,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.94 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:04,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.58 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:04,041 INFO L168 Benchmark]: Boogie Preprocessor took 38.74 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 41.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:04,042 INFO L168 Benchmark]: RCFGBuilder took 477.61 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 41.6 MB in the beginning and 58.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:04,042 INFO L168 Benchmark]: TraceAbstraction took 482.43 ms. Allocated memory is still 86.0 MB. Free memory was 58.0 MB in the beginning and 57.4 MB in the end (delta: 623.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:04,043 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 86.0 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:04,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.94 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.58 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.74 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 41.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 477.61 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 41.6 MB in the beginning and 58.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 482.43 ms. Allocated memory is still 86.0 MB. Free memory was 58.0 MB in the beginning and 57.4 MB in the end (delta: 623.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.02 ms. Allocated memory is still 86.0 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float x = -0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 387.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 35.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 76.5ms SatisfiabilityAnalysisTime, 41.1ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-08-26 01:49:04,081 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-dev-20ed64e [2021-08-26 01:49:05,924 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 01:49:05,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:49:05,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:49:05,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:49:06,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:49:06,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:49:06,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:49:06,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:49:06,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:49:06,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:49:06,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:49:06,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:49:06,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:49:06,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:49:06,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:49:06,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:49:06,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:49:06,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:49:06,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:49:06,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:49:06,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:49:06,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:49:06,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:49:06,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:49:06,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:49:06,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:49:06,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:49:06,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:49:06,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:49:06,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:49:06,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:49:06,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:49:06,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:49:06,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:49:06,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:49:06,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:49:06,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:49:06,074 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:49:06,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:49:06,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:49:06,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:49:06,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:49:06,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:49:06,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:49:06,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:49:06,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:49:06,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:49:06,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:49:06,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:49:06,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:06,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:49:06,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:49:06,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:49:06,078 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:49:06,078 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:49:06,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:49:06,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:49:06,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:49:06,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712005727f62c46a009e5aa995b5d1c386dc6cd1 [2021-08-26 01:49:06,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:49:06,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:49:06,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:49:06,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:49:06,463 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:49:06,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-08-26 01:49:06,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d433725a/2de50dcc6d1b4152a0b28fd97ebde1d1/FLAG1b690deee [2021-08-26 01:49:06,917 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:49:06,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-08-26 01:49:06,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d433725a/2de50dcc6d1b4152a0b28fd97ebde1d1/FLAG1b690deee [2021-08-26 01:49:06,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d433725a/2de50dcc6d1b4152a0b28fd97ebde1d1 [2021-08-26 01:49:06,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:49:06,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:49:06,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:06,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:49:06,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:49:06,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:06" (1/1) ... [2021-08-26 01:49:06,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4607f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:06, skipping insertion in model container [2021-08-26 01:49:06,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:06" (1/1) ... [2021-08-26 01:49:06,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:49:06,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:49:07,167 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/float_req_bl_0832b.c[3181,3194] [2021-08-26 01:49:07,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:07,205 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:49:07,251 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/float_req_bl_0832b.c[3181,3194] [2021-08-26 01:49:07,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:07,277 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:49:07,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07 WrapperNode [2021-08-26 01:49:07,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:07,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:07,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:49:07,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:49:07,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:07,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:49:07,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:49:07,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:49:07,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:49:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:49:07,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:49:07,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:49:07,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (1/1) ... [2021-08-26 01:49:07,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:07,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:49:07,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:49:07,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:49:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:49:07,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:49:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-26 01:49:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:49:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:49:16,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:49:16,789 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:49:16,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:16 BoogieIcfgContainer [2021-08-26 01:49:16,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:49:16,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:49:16,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:49:16,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:49:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:49:06" (1/3) ... [2021-08-26 01:49:16,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cbd942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:16, skipping insertion in model container [2021-08-26 01:49:16,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:07" (2/3) ... [2021-08-26 01:49:16,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cbd942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:16, skipping insertion in model container [2021-08-26 01:49:16,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:16" (3/3) ... [2021-08-26 01:49:16,813 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2021-08-26 01:49:16,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:49:16,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:49:16,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:49:16,862 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:49:16,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:49:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 01:49:16,883 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:16,883 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:16,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-08-26 01:49:16,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:16,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741758797] [2021-08-26 01:49:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:16,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:16,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:16,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:49:16,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:49:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:17,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:49:17,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:17,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:17,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741758797] [2021-08-26 01:49:17,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741758797] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:17,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:17,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:49:17,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065718326] [2021-08-26 01:49:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:49:17,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:49:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:17,542 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:17,562 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-08-26 01:49:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:49:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-26 01:49:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:17,570 INFO L225 Difference]: With dead ends: 70 [2021-08-26 01:49:17,571 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 01:49:17,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 01:49:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 01:49:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-08-26 01:49:17,609 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-08-26 01:49:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:17,609 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-08-26 01:49:17,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-08-26 01:49:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:49:17,610 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:17,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:17,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-26 01:49:17,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:17,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:17,826 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-08-26 01:49:17,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:17,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952456042] [2021-08-26 01:49:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:17,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:17,830 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) [2021-08-26 01:49:17,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:49:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 01:49:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:18,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:18,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:18,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952456042] [2021-08-26 01:49:18,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952456042] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:18,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:18,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-26 01:49:18,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051233510] [2021-08-26 01:49:18,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:49:18,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:49:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:49:18,922 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:26,216 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-08-26 01:49:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:49:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 01:49:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:26,304 INFO L225 Difference]: With dead ends: 54 [2021-08-26 01:49:26,304 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 01:49:26,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 451.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:49:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 01:49:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-08-26 01:49:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-08-26 01:49:26,307 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2021-08-26 01:49:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:26,307 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-08-26 01:49:26,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-08-26 01:49:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 01:49:26,308 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:26,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:26,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:49:26,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:26,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2021-08-26 01:49:26,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:26,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549199420] [2021-08-26 01:49:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:26,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:26,516 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) [2021-08-26 01:49:26,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:49:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:26,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 01:49:26,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:27,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:30,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:30,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549199420] [2021-08-26 01:49:30,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549199420] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:30,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:30,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-08-26 01:49:30,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733835314] [2021-08-26 01:49:30,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:49:30,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:49:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:49:30,432 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:39,527 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-08-26 01:49:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:49:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 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 [2021-08-26 01:49:39,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:39,528 INFO L225 Difference]: With dead ends: 33 [2021-08-26 01:49:39,528 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 01:49:39,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1598.5ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-26 01:49:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 01:49:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 01:49:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-26 01:49:39,532 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-08-26 01:49:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:39,532 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-26 01:49:39,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-26 01:49:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 01:49:39,532 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:39,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:39,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:49:39,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:39,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2021-08-26 01:49:39,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:39,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146598533] [2021-08-26 01:49:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:39,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:39,736 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) [2021-08-26 01:49:39,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 01:49:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:40,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 01:49:40,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:41,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:43,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:43,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146598533] [2021-08-26 01:49:43,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146598533] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:43,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:43,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-26 01:49:43,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249017641] [2021-08-26 01:49:43,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 01:49:43,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 01:49:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 01:49:43,337 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:43,454 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-08-26 01:49:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:49:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 17 [2021-08-26 01:49:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:43,456 INFO L225 Difference]: With dead ends: 29 [2021-08-26 01:49:43,456 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 01:49:43,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 579.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 01:49:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 01:49:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 01:49:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 01:49:43,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-26 01:49:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:43,457 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 01:49:43,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:49:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 01:49:43,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 01:49:43,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:49:43,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 01:49:43,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:43,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 01:49:43,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:43,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:43,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:43,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:43,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:43,853 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-08-26 01:49:43,853 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 01:49:43,853 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-08-26 01:49:43,854 INFO L860 garLoopResultBuilder]: At program point L128(lines 113 129) the Hoare annotation is: true [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-08-26 01:49:43,854 INFO L857 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 01:49:43,855 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-08-26 01:49:43,856 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-08-26 01:49:43,857 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-08-26 01:49:43,857 INFO L853 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (.cse1 (fp.neg (_ +zero 8 24)))) (and (= ~one_exp~0 .cse0) (= ULTIMATE.start___ieee754_expf_~x .cse1) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 .cse1)) (= currentRoundingMode roundNearestTiesToEven))) [2021-08-26 01:49:43,857 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-08-26 01:49:43,857 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ULTIMATE.start___ieee754_expf_~x (fp.neg (_ +zero 8 24))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= currentRoundingMode roundNearestTiesToEven)) [2021-08-26 01:49:43,857 INFO L857 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-08-26 01:49:43,861 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:49:43,868 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,873 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,875 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,876 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:49:43 BoogieIcfgContainer [2021-08-26 01:49:43,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:49:43,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:49:43,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:49:43,878 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:49:43,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:16" (3/4) ... [2021-08-26 01:49:43,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 01:49:43,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 01:49:43,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 01:49:43,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:49:43,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:49:43,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-08-26 01:49:43,947 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:49:43,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:49:43,949 INFO L168 Benchmark]: Toolchain (without parser) took 37007.71 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 44.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,949 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:43,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.28 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 38.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,950 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 34.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,950 INFO L168 Benchmark]: RCFGBuilder took 9429.08 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 34.9 MB in the beginning and 37.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,951 INFO L168 Benchmark]: TraceAbstraction took 27069.19 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 50.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,951 INFO L168 Benchmark]: Witness Printer took 69.69 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 44.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:43,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.28 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 38.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.9 MB in the beginning and 36.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.24 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 34.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9429.08 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 34.9 MB in the beginning and 37.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27069.19 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 50.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 69.69 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 44.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 124]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27007.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.4ms, AutomataDifference: 16645.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 187.8ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 100 SDtfs, 107 SDslu, 173 SDs, 0 SdLazy, 62 SolverSat, 5 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 15575.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2629.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 28.3ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 154.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 119.5ms SsaConstructionTime, 1819.4ms SatisfiabilityAnalysisTime, 7063.0ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 704 SizeOfPredicates, 19 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 24 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: 38]: Loop Invariant [2021-08-26 01:49:43,958 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,959 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-08-26 01:49:43,960 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:43,960 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-26 01:49:44,068 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...