./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ................................................................................................................................................................................................................................................................................................ 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_1011a.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 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:46:31,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:46:31,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:46:31,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:46:31,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:46:31,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:46:31,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:46:31,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:46:31,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:46:31,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:46:31,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:46:31,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:46:31,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:46:31,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:46:31,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:46:31,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:46:31,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:46:31,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:46:31,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:46:31,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:46:31,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:46:31,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:46:31,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:46:31,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:46:31,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:46:31,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:46:31,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:46:31,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:46:31,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:46:31,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:46:31,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:46:31,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:46:31,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:46:31,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:46:31,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:46:31,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:46:31,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:46:31,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:46:31,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:46:31,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:46:31,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:46:31,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:46:31,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:46:31,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:46:31,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:46:31,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:46:31,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:46:31,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:46:31,997 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:46:31,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:46:31,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:46:31,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:46:31,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:46:31,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:46:31,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:46:31,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:46:31,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:46:32,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:46:32,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:46:32,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:46:32,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:46:32,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:46:32,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2021-08-29 08:46:32,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:46:32,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:46:32,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:46:32,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:46:32,275 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:46:32,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2021-08-29 08:46:32,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b8f9473/0ca8e1efcb8a4d64af79ecfe37340b63/FLAGe788f4b3f [2021-08-29 08:46:32,656 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:46:32,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2021-08-29 08:46:32,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b8f9473/0ca8e1efcb8a4d64af79ecfe37340b63/FLAGe788f4b3f [2021-08-29 08:46:33,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b8f9473/0ca8e1efcb8a4d64af79ecfe37340b63 [2021-08-29 08:46:33,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:46:33,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:46:33,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:46:33,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:46:33,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:46:33,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be732b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33, skipping insertion in model container [2021-08-29 08:46:33,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:46:33,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:46:33,192 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c[1145,1158] [2021-08-29 08:46:33,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:46:33,199 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:46:33,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c[1145,1158] [2021-08-29 08:46:33,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:46:33,231 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:46:33,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33 WrapperNode [2021-08-29 08:46:33,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:46:33,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:46:33,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:46:33,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:46:33,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:46:33,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:46:33,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:46:33,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:46:33,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:46:33,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:46:33,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:46:33,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:46:33,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (1/1) ... [2021-08-29 08:46:33,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:46:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:46:33,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 08:46:33,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-29 08:46:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:46:33,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:46:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 08:46:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:46:33,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:46:33,522 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-29 08:46:33,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:33 BoogieIcfgContainer [2021-08-29 08:46:33,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:46:33,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:46:33,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:46:33,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:46:33,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:46:33" (1/3) ... [2021-08-29 08:46:33,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06ea96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:46:33, skipping insertion in model container [2021-08-29 08:46:33,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:33" (2/3) ... [2021-08-29 08:46:33,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06ea96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:46:33, skipping insertion in model container [2021-08-29 08:46:33,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:33" (3/3) ... [2021-08-29 08:46:33,528 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2021-08-29 08:46:33,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:46:33,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:46:33,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:46:33,597 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 08:46:33,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:46:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 08:46:33,628 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:46:33,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:46:33,629 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:46:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:46:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2021-08-29 08:46:33,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:46:33,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805428654] [2021-08-29 08:46:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:46:33,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:46:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:46:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:33,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:46:33,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805428654] [2021-08-29 08:46:33,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805428654] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:46:33,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:46:33,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:46:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037830415] [2021-08-29 08:46:33,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:46:33,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:46:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:46:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:46:33,785 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:46:33,839 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-08-29 08:46:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:46:33,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 08:46:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:46:33,847 INFO L225 Difference]: With dead ends: 36 [2021-08-29 08:46:33,847 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 08:46:33,849 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:46:33,854 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.76ms IncrementalHoareTripleChecker+Time [2021-08-29 08:46:33,855 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 41.76ms Time] [2021-08-29 08:46:33,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 08:46:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 08:46:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-29 08:46:33,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-08-29 08:46:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:46:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-29 08:46:33,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-29 08:46:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:46:33,879 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:46:33,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:46:33,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:46:33,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:46:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:46:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2021-08-29 08:46:33,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:46:33,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613460742] [2021-08-29 08:46:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:46:33,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:46:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:46:33,927 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:46:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:46:33,958 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:46:33,958 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:46:33,959 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:46:33,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:46:33,964 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:46:33,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:46:33 BoogieIcfgContainer [2021-08-29 08:46:33,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:46:33,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:46:33,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:46:33,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:46:33,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:33" (3/4) ... [2021-08-29 08:46:33,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:46:33,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:46:33,989 INFO L158 Benchmark]: Toolchain (without parser) took 896.67ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 39.7MB in the beginning and 58.6MB in the end (delta: -19.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:33,991 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:33,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.26ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 45.1MB in the end (delta: -5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 08:46:33,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.22ms. Allocated memory is still 60.8MB. Free memory was 45.1MB in the beginning and 43.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:33,992 INFO L158 Benchmark]: Boogie Preprocessor took 15.50ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 42.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:33,992 INFO L158 Benchmark]: RCFGBuilder took 240.11ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 32.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:46:33,992 INFO L158 Benchmark]: TraceAbstraction took 460.62ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 32.1MB in the beginning and 59.1MB in the end (delta: -26.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-08-29 08:46:33,993 INFO L158 Benchmark]: Witness Printer took 2.98ms. Allocated memory is still 77.6MB. Free memory was 59.1MB in the beginning and 58.6MB in the end (delta: 429.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:33,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.26ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 45.1MB in the end (delta: -5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.22ms. Allocated memory is still 60.8MB. Free memory was 45.1MB in the beginning and 43.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.50ms. Allocated memory is still 60.8MB. Free memory was 43.4MB in the beginning and 42.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.11ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 32.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 460.62ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 32.1MB in the beginning and 59.1MB in the end (delta: -26.9MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 2.98ms. Allocated memory is still 77.6MB. Free memory was 59.1MB in the beginning and 58.6MB in the end (delta: 429.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 52]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 51, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L47] float x = 0.0f; [L15] __uint32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L52] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 382.67ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.10ms, AutomataDifference: 97.61ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 18.68ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 41.76ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 33.93ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 19 mSolverCounterSat, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 13.34ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.78ms SsaConstructionTime, 44.77ms SatisfiabilityAnalysisTime, 54.67ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 08:46:34,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:46:35,538 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 08:46:35,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:46:35,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:46:35,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:46:35,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:46:35,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:46:35,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:46:35,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:46:35,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:46:35,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:46:35,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:46:35,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:46:35,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:46:35,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:46:35,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:46:35,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:46:35,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:46:35,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:46:35,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:46:35,661 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:46:35,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:46:35,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:46:35,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:46:35,662 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:46:35,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:46:35,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:46:35,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:46:35,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:46:35,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:46:35,664 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:46:35,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:46:35,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:46:35,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:46:35,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:46:35,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2021-08-29 08:46:35,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:46:35,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:46:35,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:46:35,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:46:35,914 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:46:35,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2021-08-29 08:46:35,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2506d0d6/bbcc34da2270477799a290ba9641f72c/FLAG42fe1d11f [2021-08-29 08:46:36,296 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:46:36,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2021-08-29 08:46:36,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2506d0d6/bbcc34da2270477799a290ba9641f72c/FLAG42fe1d11f [2021-08-29 08:46:36,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2506d0d6/bbcc34da2270477799a290ba9641f72c [2021-08-29 08:46:36,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:46:36,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:46:36,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:46:36,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:46:36,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:46:36,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e7e756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36, skipping insertion in model container [2021-08-29 08:46:36,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:46:36,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:46:36,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c[1145,1158] [2021-08-29 08:46:36,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:46:36,840 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:46:36,852 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c[1145,1158] [2021-08-29 08:46:36,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:46:36,890 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:46:36,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36 WrapperNode [2021-08-29 08:46:36,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:46:36,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:46:36,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:46:36,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:46:36,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:46:36,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:46:36,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:46:36,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:46:36,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:46:36,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:46:36,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:46:36,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:46:36,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (1/1) ... [2021-08-29 08:46:36,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:46:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:46:36,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 08:46:36,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 08:46:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:46:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 08:46:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:46:37,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:46:37,185 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-29 08:46:37,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:37 BoogieIcfgContainer [2021-08-29 08:46:37,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:46:37,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:46:37,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:46:37,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:46:37,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:46:36" (1/3) ... [2021-08-29 08:46:37,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1d5e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:46:37, skipping insertion in model container [2021-08-29 08:46:37,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:46:36" (2/3) ... [2021-08-29 08:46:37,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1d5e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:46:37, skipping insertion in model container [2021-08-29 08:46:37,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:37" (3/3) ... [2021-08-29 08:46:37,192 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2021-08-29 08:46:37,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:46:37,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:46:37,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:46:37,247 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 08:46:37,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:46:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 08:46:37,274 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:46:37,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:46:37,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:46:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:46:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2021-08-29 08:46:37,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:46:37,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183211983] [2021-08-29 08:46:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:46:37,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:46:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:46:37,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:46:37,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:46:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:46:37,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:46:37,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:46:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:37,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:46:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:37,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:46:37,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183211983] [2021-08-29 08:46:37,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183211983] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:46:37,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:46:37,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:46:37,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608219174] [2021-08-29 08:46:37,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:46:37,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:46:37,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:46:37,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:46:37,539 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:46:37,611 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-08-29 08:46:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:46:37,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 08:46:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:46:37,619 INFO L225 Difference]: With dead ends: 36 [2021-08-29 08:46:37,619 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 08:46:37,621 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.10ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:46:37,623 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.28ms IncrementalHoareTripleChecker+Time [2021-08-29 08:46:37,624 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 56.28ms Time] [2021-08-29 08:46:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 08:46:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 08:46:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-29 08:46:37,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-08-29 08:46:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:46:37,644 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-29 08:46:37,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-29 08:46:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:46:37,645 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:46:37,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:46:37,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 08:46:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:46:37,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:46:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:46:37,854 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2021-08-29 08:46:37,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:46:37,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846041228] [2021-08-29 08:46:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:46:37,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:46:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:46:37,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:46:37,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:46:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:46:37,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 08:46:37,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:46:37,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-08-29 08:46:38,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-08-29 08:46:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:38,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:46:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:38,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:46:38,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846041228] [2021-08-29 08:46:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846041228] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:46:38,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:46:38,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-08-29 08:46:38,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722370525] [2021-08-29 08:46:38,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 08:46:38,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:46:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 08:46:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:46:38,162 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:46:38,242 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-08-29 08:46:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 08:46:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 08:46:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:46:38,243 INFO L225 Difference]: With dead ends: 19 [2021-08-29 08:46:38,243 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 08:46:38,244 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 95.88ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-29 08:46:38,245 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 37.43ms IncrementalHoareTripleChecker+Time [2021-08-29 08:46:38,245 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 2 Unchecked, 37.43ms Time] [2021-08-29 08:46:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 08:46:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 08:46:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-08-29 08:46:38,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2021-08-29 08:46:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:46:38,248 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-08-29 08:46:38,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-08-29 08:46:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 08:46:38,249 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:46:38,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:46:38,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 08:46:38,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:46:38,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:46:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:46:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2021-08-29 08:46:38,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:46:38,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325173420] [2021-08-29 08:46:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:46:38,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:46:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:46:38,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:46:38,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 08:46:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:46:38,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-29 08:46:38,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:46:38,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-08-29 08:46:38,596 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-08-29 08:46:38,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-08-29 08:46:38,840 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-29 08:46:38,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 30 [2021-08-29 08:46:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:39,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:46:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:46:39,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:46:39,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325173420] [2021-08-29 08:46:39,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325173420] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:46:39,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:46:39,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 19 [2021-08-29 08:46:39,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883233264] [2021-08-29 08:46:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-29 08:46:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:46:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-29 08:46:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-29 08:46:39,469 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:46:39,531 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-08-29 08:46:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 08:46:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 08:46:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:46:39,532 INFO L225 Difference]: With dead ends: 16 [2021-08-29 08:46:39,532 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 08:46:39,532 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 459.00ms TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-08-29 08:46:39,533 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 17.01ms IncrementalHoareTripleChecker+Time [2021-08-29 08:46:39,533 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.24ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 31 Unchecked, 17.01ms Time] [2021-08-29 08:46:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 08:46:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 08:46:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 08:46:39,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-29 08:46:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:46:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 08:46:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 08:46:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 08:46:39,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 08:46:39,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:46:39,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 08:46:39,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:46:39,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 08:46:39,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:46:39,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:46:39,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:46:39,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:46:39,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:46:39,822 INFO L861 garLoopResultBuilder]: At program point L56(lines 41 57) the Hoare annotation is: true [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2021-08-29 08:46:39,823 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 36) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short12| (exists ((|v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8| (_ BitVec 32)) (|v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8|) (_ bv0 32))) (.cse1 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (_ +zero 8 24)) (= (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1)) ULTIMATE.start___signbit_float_~x) (= (bvand (_ bv2147483647 32) .cse0) .cse1)))) (= |ULTIMATE.start_fabs_float_#res| (_ +zero 8 24))) [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2021-08-29 08:46:39,823 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 25) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L854 garLoopResultBuilder]: At program point L38(lines 29 39) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) |ULTIMATE.start_main_#t~short12| (= |ULTIMATE.start_fabs_float_#res| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))) [2021-08-29 08:46:39,824 INFO L854 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_fabs_float_~x) (exists ((|v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8| (_ BitVec 32)) (|v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8|) (_ bv0 32))) (.cse1 (select (select |#memory_int| |v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (_ +zero 8 24)) (= (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1)) |ULTIMATE.start_fabs_float_#res|) (= (bvand (_ bv2147483647 32) .cse0) .cse1))))) [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2021-08-29 08:46:39,824 INFO L858 garLoopResultBuilder]: For program point L51-2(lines 51 54) no Hoare annotation was computed. [2021-08-29 08:46:39,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:46:39,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,845 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,845 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,846 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,848 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,850 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:46:39 BoogieIcfgContainer [2021-08-29 08:46:39,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:46:39,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:46:39,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:46:39,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:46:39,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:46:37" (3/4) ... [2021-08-29 08:46:39,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 08:46:39,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-29 08:46:39,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 08:46:39,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 08:46:39,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:46:39,888 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 08:46:39,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:46:39,889 INFO L158 Benchmark]: Toolchain (without parser) took 3169.01ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 49.6MB in the beginning and 29.7MB in the end (delta: 19.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2021-08-29 08:46:39,889 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:39,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.92ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 52.3MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:46:39,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.69ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 50.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:39,889 INFO L158 Benchmark]: Boogie Preprocessor took 19.60ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:46:39,889 INFO L158 Benchmark]: RCFGBuilder took 251.01ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 39.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:46:39,890 INFO L158 Benchmark]: TraceAbstraction took 2667.54ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 38.7MB in the beginning and 32.5MB in the end (delta: 6.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-08-29 08:46:39,890 INFO L158 Benchmark]: Witness Printer took 31.59ms. Allocated memory is still 83.9MB. Free memory was 31.9MB in the beginning and 29.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:46:39,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.92ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 52.3MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.69ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 50.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.60ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 49.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 251.01ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 39.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2667.54ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 38.7MB in the beginning and 32.5MB in the end (delta: 6.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Witness Printer took 31.59ms. Allocated memory is still 83.9MB. Free memory was 31.9MB in the beginning and 29.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2589.10ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 17.15ms, AutomataDifference: 260.46ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 73.24ms, InitialAbstractionConstructionTime: 10.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 110.72ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 93.89ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 69 mSolverCounterSat, 1.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 554.98ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 13.10ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 141 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 34.60ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 32.93ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.18ms SsaConstructionTime, 80.50ms SatisfiabilityAnalysisTime, 1306.60ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 20 QuantifiedInterpolants, 805 SizeOfPredicates, 21 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,910 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,911 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] Derived loop invariant: ((~Pluszero~LONGDOUBLE() == x && aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8 : bv32, v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8 : bv32 :: (~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][22:0]) == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][22:0]) == x) && ~bvand32(2147483647bv32, unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32]) == unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32])) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 14]: Loop Invariant [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,912 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8,QUANTIFIED] [2021-08-29 08:46:39,915 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8,QUANTIFIED] Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && (\exists v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8 : bv32, v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8 : bv32 :: (~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32][22:0]) == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32][22:0]) == \result) && ~bvand32(2147483647bv32, unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#gf_u~0.base_8][0bv32]) == unknown-#memory_int-unknown[v_ULTIMATE.start_fabs_float_~#sf_u~0.base_8][0bv32]) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((~Pluszero~LONGDOUBLE() == x && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && \result == 0bv32 RESULT: Ultimate proved your program to be correct! [2021-08-29 08:46:39,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...