./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1121b.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 cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ........................................................................................................................................................................................................................................................................................................ 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_1121b.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 cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:00:48,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:48,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:48,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:48,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:48,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:48,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:48,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:48,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:48,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:48,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:48,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:48,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:48,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:48,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:48,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:48,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:48,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:48,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:48,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:48,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:48,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:48,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:48,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:48,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:48,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:48,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:48,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:48,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:48,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:48,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:48,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:48,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:48,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:48,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:48,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:48,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:48,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:48,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:48,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:48,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:48,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:00:48,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:48,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:48,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:48,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:48,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:48,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:48,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:48,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:00:48,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:48,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:48,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:48,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:48,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:48,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:48,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:48,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:48,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:48,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:48,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:48,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:48,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:48,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:48,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:48,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:48,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:48,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:00:48,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:00:48,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:48,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:48,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2020-10-25 22:00:48,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:48,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:48,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:48,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:48,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:48,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2020-10-25 22:00:48,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201fa60d5/0c3d7e1f3f394f0bb26792f8fb6583b7/FLAG95ca90a8b [2020-10-25 22:00:49,521 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:49,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2020-10-25 22:00:49,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201fa60d5/0c3d7e1f3f394f0bb26792f8fb6583b7/FLAG95ca90a8b [2020-10-25 22:00:49,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201fa60d5/0c3d7e1f3f394f0bb26792f8fb6583b7 [2020-10-25 22:00:49,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:49,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:49,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:49,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:49,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:49,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:49" (1/1) ... [2020-10-25 22:00:49,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477d9a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:49, skipping insertion in model container [2020-10-25 22:00:49,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:49" (1/1) ... [2020-10-25 22:00:49,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:49,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:50,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:50,195 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:50,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:50,284 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:50,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50 WrapperNode [2020-10-25 22:00:50,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:50,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:50,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:50,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:50,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:50,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:50,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:50,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:50,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... [2020-10-25 22:00:50,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:50,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:50,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:50,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:50,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:00:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:00:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:00:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:00:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:00:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-25 22:00:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:51,207 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:51,210 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-25 22:00:51,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:51 BoogieIcfgContainer [2020-10-25 22:00:51,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:51,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:51,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:51,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:51,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:49" (1/3) ... [2020-10-25 22:00:51,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ccaf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:51, skipping insertion in model container [2020-10-25 22:00:51,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:50" (2/3) ... [2020-10-25 22:00:51,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ccaf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:51, skipping insertion in model container [2020-10-25 22:00:51,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:51" (3/3) ... [2020-10-25 22:00:51,233 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-10-25 22:00:51,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:51,257 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:51,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:51,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:51,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:51,326 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:51,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:51,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:51,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:51,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:51,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-25 22:00:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:00:51,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:51,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:51,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:51,370 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-10-25 22:00:51,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:51,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909476501] [2020-10-25 22:00:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:51,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909476501] [2020-10-25 22:00:51,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:51,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:00:51,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462842667] [2020-10-25 22:00:51,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:51,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:00:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:51,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:51,615 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-10-25 22:00:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:51,646 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-10-25 22:00:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:51,648 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:00:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:51,659 INFO L225 Difference]: With dead ends: 83 [2020-10-25 22:00:51,659 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 22:00:51,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 22:00:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-25 22:00:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 22:00:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-10-25 22:00:51,709 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-10-25 22:00:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:51,710 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-10-25 22:00:51,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-10-25 22:00:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:00:51,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:51,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:51,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:00:51,712 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:51,713 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-10-25 22:00:51,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:51,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639821834] [2020-10-25 22:00:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:51,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:51,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:51,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:00:51,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:00:51,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:00:52,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:52 BoogieIcfgContainer [2020-10-25 22:00:52,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:52,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:52,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:52,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:52,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:51" (3/4) ... [2020-10-25 22:00:52,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 22:00:52,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:52,027 INFO L168 Benchmark]: Toolchain (without parser) took 2134.24 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 18.6 MB in the beginning and 42.5 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:52,028 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 21.4 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:52,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.32 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.0 MB in the beginning and 24.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:52,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.72 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:52,032 INFO L168 Benchmark]: Boogie Preprocessor took 64.28 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 33.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:52,033 INFO L168 Benchmark]: RCFGBuilder took 807.10 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 21.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:52,034 INFO L168 Benchmark]: TraceAbstraction took 799.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 42.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:52,035 INFO L168 Benchmark]: Witness Printer took 5.75 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.5 MB in the end (delta: 356.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:52,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 21.4 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.32 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.0 MB in the beginning and 24.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.72 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.28 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 33.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 807.10 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 21.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 799.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 42.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.75 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.5 MB in the end (delta: 356.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L120] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L123] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1121b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 22:00:54,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:54,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:54,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:54,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:54,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:54,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:54,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:54,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:54,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:54,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:54,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:54,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:54,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:54,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:54,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:54,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:54,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:54,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:54,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:54,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:54,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:54,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:54,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:54,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:54,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:54,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:54,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:54,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:54,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:54,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:54,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:54,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:54,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:54,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:54,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:54,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:54,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:54,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:54,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:54,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:54,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 22:00:54,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:54,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:54,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:54,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:54,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:54,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:54,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:54,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:54,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:54,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:54,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:54,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:54,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 22:00:54,984 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 22:00:54,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:54,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:54,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:54,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:54,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:54,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:54,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:54,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:54,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:54,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:54,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:54,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 22:00:54,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2020-10-25 22:00:55,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:55,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:55,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:55,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:55,447 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:55,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2020-10-25 22:00:55,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3672b8/ab6dbc8c57924d419a8adae717bd6ff3/FLAGb2a31dfe5 [2020-10-25 22:00:56,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:56,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2020-10-25 22:00:56,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3672b8/ab6dbc8c57924d419a8adae717bd6ff3/FLAGb2a31dfe5 [2020-10-25 22:00:56,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3672b8/ab6dbc8c57924d419a8adae717bd6ff3 [2020-10-25 22:00:56,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:56,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:56,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:56,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:56,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:56,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:56" (1/1) ... [2020-10-25 22:00:56,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3c65aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:56, skipping insertion in model container [2020-10-25 22:00:56,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:56" (1/1) ... [2020-10-25 22:00:56,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:56,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:56,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:57,016 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:57,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:57,124 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:57,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57 WrapperNode [2020-10-25 22:00:57,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:57,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:57,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:57,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:57,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:57,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:57,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:57,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:57,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... [2020-10-25 22:00:57,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:57,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:57,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:57,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:57,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-10-25 22:00:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 22:00:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-25 22:00:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 22:00:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:57,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-25 22:00:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 22:00:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:59,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:59,984 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-25 22:00:59,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:59 BoogieIcfgContainer [2020-10-25 22:00:59,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:59,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:59,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:59,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:59,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:56" (1/3) ... [2020-10-25 22:00:59,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d881146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:59, skipping insertion in model container [2020-10-25 22:00:59,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:57" (2/3) ... [2020-10-25 22:00:59,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d881146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:59, skipping insertion in model container [2020-10-25 22:00:59,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:59" (3/3) ... [2020-10-25 22:00:59,997 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-10-25 22:01:00,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:01:00,017 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:01:00,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:01:00,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:01:00,061 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:01:00,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:01:00,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:01:00,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:01:00,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:01:00,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:01:00,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:01:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-25 22:01:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:01:00,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:00,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:00,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-10-25 22:01:00,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:00,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045778614] [2020-10-25 22:01:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 22:01:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:00,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 22:01:00,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:00,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:00,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045778614] [2020-10-25 22:01:00,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:00,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 22:01:00,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891869685] [2020-10-25 22:01:00,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:01:00,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:01:00,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:01:00,671 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-10-25 22:01:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:00,706 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-10-25 22:01:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:01:00,708 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:01:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:00,721 INFO L225 Difference]: With dead ends: 83 [2020-10-25 22:01:00,721 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 22:01:00,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:01:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 22:01:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-25 22:01:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 22:01:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-10-25 22:01:00,787 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-10-25 22:01:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:00,788 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-10-25 22:01:00,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:01:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-10-25 22:01:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:01:00,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:00,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:01,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 22:01:01,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-10-25 22:01:01,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:01,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963355236] [2020-10-25 22:01:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 22:01:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:01,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 22:01:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:03,037 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-25 22:01:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:04,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:08,027 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-10-25 22:01:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:08,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963355236] [2020-10-25 22:01:08,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:08,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-25 22:01:08,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246643583] [2020-10-25 22:01:08,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 22:01:08,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:08,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 22:01:08,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2020-10-25 22:01:08,326 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-10-25 22:01:10,679 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24))) (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2020-10-25 22:01:15,425 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-10-25 22:01:19,445 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-10-25 22:01:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:19,664 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-10-25 22:01:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:01:19,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-25 22:01:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:19,672 INFO L225 Difference]: With dead ends: 44 [2020-10-25 22:01:19,672 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 22:01:19,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2020-10-25 22:01:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 22:01:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-25 22:01:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 22:01:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-10-25 22:01:19,681 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-10-25 22:01:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:19,682 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-10-25 22:01:19,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 22:01:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-10-25 22:01:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 22:01:19,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:01:19,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:01:19,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 22:01:19,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:01:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:01:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-10-25 22:01:19,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:01:19,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020904989] [2020-10-25 22:01:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 22:01:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:01:19,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 22:01:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:01:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:20,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:01:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:01:20,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020904989] [2020-10-25 22:01:20,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:01:20,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 22:01:20,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127492668] [2020-10-25 22:01:20,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:01:20,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:01:20,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:01:20,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:01:20,153 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 8 states. [2020-10-25 22:01:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:01:20,239 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-10-25 22:01:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:01:20,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-25 22:01:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:01:20,240 INFO L225 Difference]: With dead ends: 39 [2020-10-25 22:01:20,240 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:01:20,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-25 22:01:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:01:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:01:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:01:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:01:20,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-25 22:01:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:01:20,249 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:01:20,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:01:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:01:20,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:01:20,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 22:01:20,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:01:21,871 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 13 [2020-10-25 22:01:24,070 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-10-25 22:01:24,073 INFO L274 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-10-25 22:01:24,073 INFO L274 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-10-25 22:01:24,073 INFO L274 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,074 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-10-25 22:01:24,074 INFO L270 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (= (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_float_~x (fp.neg (_ +zero 8 24))))) (fp.div roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_fmod_float_#res|))) [2020-10-25 22:01:24,074 INFO L274 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-10-25 22:01:24,074 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-10-25 22:01:24,074 INFO L270 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L274 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,075 INFO L277 CegarLoopResult]: At program point L128(lines 112 129) the Hoare annotation is: true [2020-10-25 22:01:24,076 INFO L274 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,076 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-10-25 22:01:24,076 INFO L274 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-10-25 22:01:24,077 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-10-25 22:01:24,077 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24)))) [2020-10-25 22:01:24,077 INFO L274 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-10-25 22:01:24,077 INFO L274 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,078 INFO L270 CegarLoopResult]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2020-10-25 22:01:24,078 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-10-25 22:01:24,078 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:01:24,078 INFO L274 CegarLoopResult]: For program point L123(lines 123 126) no Hoare annotation was computed. [2020-10-25 22:01:24,078 INFO L274 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-10-25 22:01:24,079 INFO L270 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-10-25 22:01:24,079 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:01:24,079 INFO L274 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-10-25 22:01:24,079 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-10-25 22:01:24,080 INFO L274 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-10-25 22:01:24,080 INFO L270 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-10-25 22:01:24,080 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:01:24,080 INFO L274 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-10-25 22:01:24,080 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-10-25 22:01:24,081 INFO L274 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,081 INFO L274 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-10-25 22:01:24,081 INFO L274 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-10-25 22:01:24,081 INFO L270 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-10-25 22:01:24,081 INFO L274 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-10-25 22:01:24,082 INFO L274 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-10-25 22:01:24,082 INFO L270 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-10-25 22:01:24,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,098 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,099 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,099 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,100 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,100 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,100 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,101 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,102 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:01:24,102 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,103 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:01:24,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:01:24 BoogieIcfgContainer [2020-10-25 22:01:24,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:01:24,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:01:24,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:01:24,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:01:24,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:59" (3/4) ... [2020-10-25 22:01:24,110 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:01:24,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 22:01:24,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-25 22:01:24,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:01:24,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:01:24,166 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:01:24,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:01:24,169 INFO L168 Benchmark]: Toolchain (without parser) took 27533.79 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.6 MB in the beginning and 38.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,170 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 21.7 MB in the beginning and 21.7 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:01:24,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.37 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 33.7 MB in the end (delta: -745.0 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.79 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 31.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,172 INFO L168 Benchmark]: Boogie Preprocessor took 45.99 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 29.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,173 INFO L168 Benchmark]: RCFGBuilder took 2757.62 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 32.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,174 INFO L168 Benchmark]: TraceAbstraction took 24115.92 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.3 MB in the beginning and 40.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,174 INFO L168 Benchmark]: Witness Printer took 61.45 ms. Allocated memory is still 69.2 MB. Free memory was 40.6 MB in the beginning and 38.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:01:24,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 21.7 MB in the beginning and 21.7 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.37 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 33.7 MB in the end (delta: -745.0 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.79 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 31.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.99 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 29.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2757.62 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 32.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24115.92 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.3 MB in the beginning and 40.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 61.45 ms. Allocated memory is still 69.2 MB. Free memory was 40.6 MB in the beginning and 38.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 110]: Loop Invariant [2020-10-25 22:01:24,193 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,194 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-10-25 22:01:24,196 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] Derived loop invariant: 1bv32 == \result && (\exists ULTIMATE.start_fmod_float_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())), ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) == \result) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-10-25 22:01:24,197 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,197 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-25 22:01:24,197 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-25 22:01:24,198 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 267 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 38 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 11 QuantifiedInterpolants, 4137 SizeOfPredicates, 16 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 20 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...