./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1052c.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 9ea4cee1f1883c16db4b84df51657eeb8f7eeec7 ................................................................................................................................................................................................................................................................................................. 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_1052c.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 9ea4cee1f1883c16db4b84df51657eeb8f7eeec7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:00:30,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:30,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:30,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:30,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:30,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:30,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:30,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:30,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:30,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:30,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:30,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:30,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:30,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:30,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:30,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:30,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:30,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:30,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:30,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:30,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:30,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:30,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:30,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:30,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:30,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:30,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:30,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:30,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:30,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:30,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:30,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:30,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:30,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:30,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:30,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:30,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:30,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:30,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:30,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:30,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:30,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:00:30,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:30,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:30,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:30,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:30,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:30,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:30,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:30,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:30,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:30,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:30,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:30,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:30,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:30,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:30,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:30,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:30,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:30,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:30,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:30,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:30,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:00:30,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:00:30,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:30,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:30,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ea4cee1f1883c16db4b84df51657eeb8f7eeec7 [2020-10-25 22:00:30,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:30,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:30,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:30,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:30,884 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:30,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2020-10-25 22:00:30,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24acc045/5fdc0b76e2bb4c7eaa5c478b80eb6e6b/FLAGe6f70a26f [2020-10-25 22:00:31,568 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:31,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2020-10-25 22:00:31,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24acc045/5fdc0b76e2bb4c7eaa5c478b80eb6e6b/FLAGe6f70a26f [2020-10-25 22:00:31,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24acc045/5fdc0b76e2bb4c7eaa5c478b80eb6e6b [2020-10-25 22:00:31,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:31,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:31,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:31,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:31,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:31,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:31" (1/1) ... [2020-10-25 22:00:31,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110d1875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:31, skipping insertion in model container [2020-10-25 22:00:31,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:31" (1/1) ... [2020-10-25 22:00:31,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:31,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:32,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:32,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:32,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:32,231 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:32,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32 WrapperNode [2020-10-25 22:00:32,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:32,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:32,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:32,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:32,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:32,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:32,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:32,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:32,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... [2020-10-25 22:00:32,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:32,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:32,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:32,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:32,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:00:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:00:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:00:32,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:00:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:32,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:32,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:00:32,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:32,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:32,893 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:32,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:32 BoogieIcfgContainer [2020-10-25 22:00:32,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:32,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:32,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:32,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:32,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:31" (1/3) ... [2020-10-25 22:00:32,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696d2316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:32, skipping insertion in model container [2020-10-25 22:00:32,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:32" (2/3) ... [2020-10-25 22:00:32,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696d2316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:32, skipping insertion in model container [2020-10-25 22:00:32,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:32" (3/3) ... [2020-10-25 22:00:32,904 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2020-10-25 22:00:32,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:32,921 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:32,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:32,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:32,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:32,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:32,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:32,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:32,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:32,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:32,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-25 22:00:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:00:32,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:32,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:32,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2020-10-25 22:00:33,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:33,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644199537] [2020-10-25 22:00:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644199537] [2020-10-25 22:00:33,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:33,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:00:33,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039090484] [2020-10-25 22:00:33,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:33,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:00:33,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:33,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:33,172 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-25 22:00:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:33,192 INFO L93 Difference]: Finished difference Result 59 states and 91 transitions. [2020-10-25 22:00:33,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:33,194 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:00:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:33,204 INFO L225 Difference]: With dead ends: 59 [2020-10-25 22:00:33,205 INFO L226 Difference]: Without dead ends: 27 [2020-10-25 22:00:33,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-25 22:00:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-25 22:00:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 22:00:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-25 22:00:33,247 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2020-10-25 22:00:33,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:33,247 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-25 22:00:33,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-10-25 22:00:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:33,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:33,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:33,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:00:33,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2020-10-25 22:00:33,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:33,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293446557] [2020-10-25 22:00:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:33,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:33,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:33,390 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:00:33,390 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:00:33,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:00:33,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:33 BoogieIcfgContainer [2020-10-25 22:00:33,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:33,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:33,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:33,426 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:33,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:32" (3/4) ... [2020-10-25 22:00:33,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 22:00:33,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:33,434 INFO L168 Benchmark]: Toolchain (without parser) took 1534.10 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.4 MB in the beginning and 24.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,435 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:33,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.73 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 19.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.72 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,437 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,438 INFO L168 Benchmark]: RCFGBuilder took 571.57 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 32.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,439 INFO L168 Benchmark]: TraceAbstraction took 527.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 24.4 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:33,440 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 54.5 MB. Free memory was 24.4 MB in the beginning and 24.1 MB in the end (delta: 285.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:33,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.73 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 19.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.72 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.65 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 571.57 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 32.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 527.62 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 24.4 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.88 ms. Allocated memory is still 54.5 MB. Free memory was 24.4 MB in the beginning and 24.1 MB in the end (delta: 285.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of someUnaryFLOAToperation at line 77, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; VAL [huge_floor=1000000000000000000000000000000] [L77] float x = -0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_floor=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_floor=1000000000000000000000000000000] [L78] float res = floor_float(x); [L81] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_floor=1000000000000000000000000000000] [L81] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 22:00:36,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:36,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:36,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:36,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:36,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:36,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:36,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:36,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:36,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:36,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:36,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:36,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:36,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:36,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:36,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:36,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:36,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:36,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:36,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:36,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:36,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:36,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:36,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:36,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:36,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:36,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:36,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:36,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:36,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:36,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:36,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:36,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:36,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:36,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:36,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:36,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:36,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:36,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:36,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:36,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:36,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 22:00:36,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:36,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:36,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:36,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:36,198 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:36,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:36,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:36,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:36,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:36,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:36,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:36,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:36,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 22:00:36,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 22:00:36,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:36,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:36,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:36,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:36,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:36,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:36,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:36,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:36,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:36,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:36,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:36,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:36,204 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 22:00:36,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 22:00:36,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:36,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:36,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 22:00:36,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ea4cee1f1883c16db4b84df51657eeb8f7eeec7 [2020-10-25 22:00:36,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:36,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:36,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:36,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:36,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:36,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2020-10-25 22:00:36,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dac134f/effce68ed5e342bf8622d9eafec92889/FLAG231f0c7bc [2020-10-25 22:00:37,294 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:37,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2020-10-25 22:00:37,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dac134f/effce68ed5e342bf8622d9eafec92889/FLAG231f0c7bc [2020-10-25 22:00:37,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1dac134f/effce68ed5e342bf8622d9eafec92889 [2020-10-25 22:00:37,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:37,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:37,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:37,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:37,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:37,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:37" (1/1) ... [2020-10-25 22:00:37,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e45201a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:37, skipping insertion in model container [2020-10-25 22:00:37,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:37" (1/1) ... [2020-10-25 22:00:37,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:37,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:37,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:37,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:37,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:38,005 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:38,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38 WrapperNode [2020-10-25 22:00:38,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:38,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:38,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:38,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:38,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:38,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:38,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:38,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:38,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... [2020-10-25 22:00:38,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:38,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:38,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:38,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:38,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 22:00:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-25 22:00:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 22:00:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-25 22:00:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 22:00:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:39,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:39,165 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:39,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:39 BoogieIcfgContainer [2020-10-25 22:00:39,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:39,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:39,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:39,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:39,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:37" (1/3) ... [2020-10-25 22:00:39,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f14746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:39, skipping insertion in model container [2020-10-25 22:00:39,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:38" (2/3) ... [2020-10-25 22:00:39,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f14746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:39, skipping insertion in model container [2020-10-25 22:00:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:39" (3/3) ... [2020-10-25 22:00:39,175 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2020-10-25 22:00:39,186 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:39,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:39,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:39,228 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:39,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:39,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:39,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:39,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:39,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:39,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:39,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-25 22:00:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:00:39,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:39,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:39,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2020-10-25 22:00:39,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:39,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078905127] [2020-10-25 22:00:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:39,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 22:00:39,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:39,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:39,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078905127] [2020-10-25 22:00:39,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:39,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 22:00:39,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380331745] [2020-10-25 22:00:39,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:39,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:39,468 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-25 22:00:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:39,488 INFO L93 Difference]: Finished difference Result 59 states and 91 transitions. [2020-10-25 22:00:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:39,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:00:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:39,504 INFO L225 Difference]: With dead ends: 59 [2020-10-25 22:00:39,504 INFO L226 Difference]: Without dead ends: 27 [2020-10-25 22:00:39,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-25 22:00:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-25 22:00:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 22:00:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-25 22:00:39,559 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2020-10-25 22:00:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:39,560 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-25 22:00:39,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-10-25 22:00:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:39,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:39,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:39,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 22:00:39,776 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2020-10-25 22:00:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:39,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427295301] [2020-10-25 22:00:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:39,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 22:00:39,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:40,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:40,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427295301] [2020-10-25 22:00:40,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:40,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 22:00:40,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716010227] [2020-10-25 22:00:40,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:00:40,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:00:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:00:40,219 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 8 states. [2020-10-25 22:00:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:40,552 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-25 22:00:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:00:40,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-25 22:00:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:40,554 INFO L225 Difference]: With dead ends: 51 [2020-10-25 22:00:40,554 INFO L226 Difference]: Without dead ends: 34 [2020-10-25 22:00:40,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:00:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-25 22:00:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-10-25 22:00:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:00:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-25 22:00:40,572 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2020-10-25 22:00:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:40,572 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-25 22:00:40,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:00:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-25 22:00:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:00:40,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:40,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:40,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 22:00:40,775 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1612307429, now seen corresponding path program 1 times [2020-10-25 22:00:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:40,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659731525] [2020-10-25 22:00:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:40,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 22:00:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:41,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:41,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659731525] [2020-10-25 22:00:41,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:41,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-25 22:00:41,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382577713] [2020-10-25 22:00:41,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:00:41,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:41,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:00:41,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:00:41,421 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-10-25 22:00:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:41,672 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-25 22:00:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:00:41,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-25 22:00:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:41,677 INFO L225 Difference]: With dead ends: 34 [2020-10-25 22:00:41,677 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 22:00:41,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:00:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 22:00:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-25 22:00:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:00:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-25 22:00:41,688 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-25 22:00:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:41,689 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-25 22:00:41,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:00:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-25 22:00:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 22:00:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:41,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:41,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 22:00:41,903 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1572128049, now seen corresponding path program 1 times [2020-10-25 22:00:41,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:41,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63870935] [2020-10-25 22:00:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:42,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 22:00:42,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63870935] [2020-10-25 22:00:42,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:42,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 22:00:42,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383000779] [2020-10-25 22:00:42,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:00:42,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:42,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:00:42,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:00:42,236 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-10-25 22:00:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:42,364 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-25 22:00:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:00:42,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-25 22:00:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:42,369 INFO L225 Difference]: With dead ends: 34 [2020-10-25 22:00:42,369 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 22:00:42,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-25 22:00:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 22:00:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-25 22:00:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:00:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-25 22:00:42,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2020-10-25 22:00:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:42,382 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-25 22:00:42,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:00:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-25 22:00:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 22:00:42,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:42,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:42,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 22:00:42,585 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1913492621, now seen corresponding path program 1 times [2020-10-25 22:00:42,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:42,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021181660] [2020-10-25 22:00:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:42,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 22:00:42,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021181660] [2020-10-25 22:00:42,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:42,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-25 22:00:42,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324268408] [2020-10-25 22:00:42,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 22:00:42,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:42,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 22:00:42,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:00:42,929 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-10-25 22:00:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:43,102 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-10-25 22:00:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:00:43,103 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-25 22:00:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:43,103 INFO L225 Difference]: With dead ends: 25 [2020-10-25 22:00:43,103 INFO L226 Difference]: Without dead ends: 22 [2020-10-25 22:00:43,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-25 22:00:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-25 22:00:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-25 22:00:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:00:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-10-25 22:00:43,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 17 [2020-10-25 22:00:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:43,110 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-10-25 22:00:43,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 22:00:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-10-25 22:00:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 22:00:43,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:43,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:43,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-25 22:00:43,313 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash 805440418, now seen corresponding path program 1 times [2020-10-25 22:00:43,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:43,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780086864] [2020-10-25 22:00:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-25 22:00:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:43,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-25 22:00:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:43,549 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:00:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:43,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:43,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780086864] [2020-10-25 22:00:43,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:43,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-10-25 22:00:43,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083324464] [2020-10-25 22:00:43,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-25 22:00:43,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-25 22:00:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-25 22:00:43,975 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 16 states. [2020-10-25 22:00:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:44,346 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-10-25 22:00:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 22:00:44,347 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-25 22:00:44,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:44,347 INFO L225 Difference]: With dead ends: 22 [2020-10-25 22:00:44,348 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:00:44,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-25 22:00:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:00:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:00:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:00:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:00:44,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-25 22:00:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:44,349 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:00:44,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-25 22:00:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:00:44,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:00:44,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-25 22:00:44,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:00:44,896 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:00:44,899 INFO L274 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-10-25 22:00:44,900 INFO L274 CegarLoopResult]: For program point L61-1(lines 61 65) no Hoare annotation was computed. [2020-10-25 22:00:44,900 INFO L270 CegarLoopResult]: At program point L61-2(lines 61 65) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_floor_float_#res| .cse0) (= ULTIMATE.start_floor_float_~ix~0 (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_floor_float_~x .cse0) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (bvadd ULTIMATE.start_floor_float_~j0~0 (_ bv127 32))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.neg (_ +zero 8 24))))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) |ULTIMATE.start_main_#t~short15|)) [2020-10-25 22:00:44,900 INFO L274 CegarLoopResult]: For program point L61-3(lines 61 65) no Hoare annotation was computed. [2020-10-25 22:00:44,900 INFO L277 CegarLoopResult]: At program point L86(lines 70 87) the Hoare annotation is: true [2020-10-25 22:00:44,901 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-10-25 22:00:44,901 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L270 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_floor_float_#res| .cse0) (= ULTIMATE.start_floor_float_~ix~0 (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_floor_float_~x .cse0) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (bvadd ULTIMATE.start_floor_float_~j0~0 (_ bv127 32))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.neg (_ +zero 8 24))))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) .cse0) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))))) [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:00:44,902 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:00:44,903 INFO L274 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-10-25 22:00:44,903 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-10-25 22:00:44,903 INFO L274 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-10-25 22:00:44,903 INFO L274 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-10-25 22:00:44,903 INFO L270 CegarLoopResult]: At program point L67(lines 58 68) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_floor_float_#res| .cse0) (= ULTIMATE.start_floor_float_~ix~0 (_ bv0 32)) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_floor_float_~x .cse0) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (bvlshr (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv23 32)) (bvadd ULTIMATE.start_floor_float_~j0~0 (_ bv127 32))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) (fp.neg (_ +zero 8 24))))) (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~0) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~0) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~0)) .cse0) |ULTIMATE.start_main_#t~short15|)) [2020-10-25 22:00:44,903 INFO L274 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-10-25 22:00:44,904 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-10-25 22:00:44,904 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_floor_float_~x (fp.neg (_ +zero 8 24))) (= ~huge_floor~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-10-25 22:00:44,904 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-10-25 22:00:44,917 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,923 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,932 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,932 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,932 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,933 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,933 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,934 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,934 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,934 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,935 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,935 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,935 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,936 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,936 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,941 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,942 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,944 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,945 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,953 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,953 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,953 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,954 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,967 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:44,967 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,967 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,967 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,968 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:44,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:44,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:44 BoogieIcfgContainer [2020-10-25 22:00:44,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:44,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:44,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:44,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:44,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:39" (3/4) ... [2020-10-25 22:00:44,986 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:00:45,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-10-25 22:00:45,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 22:00:45,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:00:45,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:00:45,038 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2020-10-25 22:00:45,040 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-10-25 22:00:45,041 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-10-25 22:00:45,092 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:00:45,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:45,097 INFO L168 Benchmark]: Toolchain (without parser) took 7442.52 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 21.6 MB in the beginning and 35.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,098 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:45,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.44 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 21.0 MB in the end (delta: 1.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.93 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 28.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,100 INFO L168 Benchmark]: Boogie Preprocessor took 84.94 ms. Allocated memory is still 44.0 MB. Free memory was 28.9 MB in the beginning and 27.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,101 INFO L168 Benchmark]: RCFGBuilder took 995.89 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 28.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,101 INFO L168 Benchmark]: TraceAbstraction took 5810.93 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 39.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,102 INFO L168 Benchmark]: Witness Printer took 116.03 ms. Allocated memory is still 67.1 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:45,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.44 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 21.0 MB in the end (delta: 1.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.93 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 28.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.94 ms. Allocated memory is still 44.0 MB. Free memory was 28.9 MB in the beginning and 27.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 995.89 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 28.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5810.93 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 39.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 116.03 ms. Allocated memory is still 67.1 MB. Free memory was 39.0 MB in the beginning and 35.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-10-25 22:00:45,122 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,122 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,122 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,123 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,123 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,123 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,124 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,124 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 61]: Loop Invariant [2020-10-25 22:00:45,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,124 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,125 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,125 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,125 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,125 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,127 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,128 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,129 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,129 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,129 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2020-10-25 22:00:45,132 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,133 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,133 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,133 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,133 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,134 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,136 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,136 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 58]: Loop Invariant [2020-10-25 22:00:45,136 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,138 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,138 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,138 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,138 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:00:45,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_floor_float_~i0~0,QUANTIFIED] [2020-10-25 22:00:45,142 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,142 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:00:45,142 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ix == 0bv32) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && (\exists ULTIMATE.start_floor_float_~i0~0 : bv32 :: ~bvlshr32(~bvand32(2147483647bv32, ULTIMATE.start_floor_float_~i0~0), 23bv32) == ~bvadd64(j0, 127bv32) && ~fp~LONGDOUBLE(ULTIMATE.start_floor_float_~i0~0[31:31], ULTIMATE.start_floor_float_~i0~0[30:23], ULTIMATE.start_floor_float_~i0~0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && ~fp~LONGDOUBLE(i0[31:31], i0[30:23], i0[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && huge_floor == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 319 SDslu, 120 SDs, 0 SdLazy, 137 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 208 HoareAnnotationTreeSize, 5 FomulaSimplifications, 204 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 170 ConstructedInterpolants, 22 QuantifiedInterpolants, 18472 SizeOfPredicates, 40 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 proved your program to be correct! Received shutdown request...