./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 .......................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 16:17:17,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 16:17:17,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 16:17:17,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 16:17:17,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 16:17:17,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 16:17:17,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 16:17:17,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 16:17:17,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 16:17:17,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 16:17:17,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 16:17:17,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 16:17:17,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 16:17:17,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 16:17:17,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 16:17:17,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 16:17:17,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 16:17:17,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 16:17:17,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 16:17:17,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 16:17:17,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 16:17:17,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 16:17:17,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 16:17:17,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 16:17:17,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 16:17:17,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 16:17:17,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 16:17:17,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 16:17:17,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 16:17:17,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 16:17:17,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 16:17:17,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 16:17:17,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 16:17:17,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 16:17:17,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 16:17:17,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 16:17:17,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 16:17:17,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 16:17:17,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 16:17:17,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 16:17:17,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 16:17:17,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 16:17:17,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 16:17:17,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 16:17:17,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 16:17:17,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 16:17:17,402 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 16:17:17,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 16:17:17,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 16:17:17,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 16:17:17,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 16:17:17,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 16:17:17,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 16:17:17,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 16:17:17,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 16:17:17,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 16:17:17,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 16:17:17,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 16:17:17,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 16:17:17,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 16:17:17,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 16:17:17,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 16:17:17,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 16:17:17,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:17:17,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 16:17:17,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 16:17:17,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 16:17:17,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 16:17:17,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 16:17:17,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 16:17:17,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 16:17:17,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-12-02 16:17:17,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 16:17:17,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 16:17:17,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 16:17:17,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 16:17:17,965 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 16:17:17,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-12-02 16:17:18,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ceef25a/b57fd902c3264a1b8b769b63e3b0bb05/FLAG49aaaadd6 [2020-12-02 16:17:18,742 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 16:17:18,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-12-02 16:17:18,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ceef25a/b57fd902c3264a1b8b769b63e3b0bb05/FLAG49aaaadd6 [2020-12-02 16:17:19,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ceef25a/b57fd902c3264a1b8b769b63e3b0bb05 [2020-12-02 16:17:19,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 16:17:19,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 16:17:19,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 16:17:19,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 16:17:19,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 16:17:19,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6131e20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19, skipping insertion in model container [2020-12-02 16:17:19,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,133 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 16:17:19,171 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 16:17:19,397 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c[2701,2714] [2020-12-02 16:17:19,405 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:17:19,418 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 16:17:19,462 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c[2701,2714] [2020-12-02 16:17:19,463 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:17:19,483 INFO L217 MainTranslator]: Completed translation [2020-12-02 16:17:19,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19 WrapperNode [2020-12-02 16:17:19,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 16:17:19,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 16:17:19,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 16:17:19,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 16:17:19,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 16:17:19,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 16:17:19,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 16:17:19,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 16:17:19,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (1/1) ... [2020-12-02 16:17:19,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 16:17:19,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 16:17:19,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 16:17:19,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 16:17:19,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (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 [2020-12-02 16:17:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 16:17:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 16:17:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 16:17:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 16:17:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 16:17:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 16:17:19,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 16:17:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 16:17:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 16:17:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 16:17:20,259 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 16:17:20,259 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-02 16:17:20,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:20 BoogieIcfgContainer [2020-12-02 16:17:20,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 16:17:20,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 16:17:20,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 16:17:20,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 16:17:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:17:19" (1/3) ... [2020-12-02 16:17:20,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cc7804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:20, skipping insertion in model container [2020-12-02 16:17:20,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:19" (2/3) ... [2020-12-02 16:17:20,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cc7804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:20, skipping insertion in model container [2020-12-02 16:17:20,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:20" (3/3) ... [2020-12-02 16:17:20,272 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-12-02 16:17:20,289 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 16:17:20,293 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 16:17:20,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 16:17:20,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 16:17:20,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 16:17:20,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 16:17:20,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 16:17:20,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 16:17:20,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 16:17:20,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 16:17:20,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 16:17:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-02 16:17:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 16:17:20,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:17:20,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:17:20,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:17:20,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:17:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-12-02 16:17:20,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 16:17:20,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166722150] [2020-12-02 16:17:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 16:17:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:17:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:20,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166722150] [2020-12-02 16:17:20,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:17:20,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 16:17:20,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306089950] [2020-12-02 16:17:20,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 16:17:20,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 16:17:20,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 16:17:20,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 16:17:20,590 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-02 16:17:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:17:20,616 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2020-12-02 16:17:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 16:17:20,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 16:17:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:17:20,630 INFO L225 Difference]: With dead ends: 82 [2020-12-02 16:17:20,630 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:17:20,634 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 [2020-12-02 16:17:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:17:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:17:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:17:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-12-02 16:17:20,682 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-12-02 16:17:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:17:20,683 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-12-02 16:17:20,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 16:17:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-12-02 16:17:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 16:17:20,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:17:20,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:17:20,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 16:17:20,689 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:17:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:17:20,690 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-12-02 16:17:20,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 16:17:20,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050577267] [2020-12-02 16:17:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 16:17:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 16:17:20,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 16:17:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 16:17:20,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 16:17:20,966 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 16:17:20,966 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 16:17:20,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 16:17:21,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:17:21 BoogieIcfgContainer [2020-12-02 16:17:21,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 16:17:21,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 16:17:21,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 16:17:21,033 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 16:17:21,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:20" (3/4) ... [2020-12-02 16:17:21,038 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 16:17:21,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 16:17:21,043 INFO L168 Benchmark]: Toolchain (without parser) took 1937.16 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 29.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:21,045 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 31.3 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:17:21,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.78 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.9 MB in the end (delta: 607.4 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:21,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 20.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:17:21,048 INFO L168 Benchmark]: Boogie Preprocessor took 48.69 ms. Allocated memory is still 46.1 MB. Free memory was 20.9 MB in the beginning and 30.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:21,050 INFO L168 Benchmark]: RCFGBuilder took 666.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 27.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:21,051 INFO L168 Benchmark]: TraceAbstraction took 768.53 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 30.2 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:17:21,053 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 29.9 MB in the end (delta: 302.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:17:21,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 31.3 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.78 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 22.9 MB in the end (delta: 607.4 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.53 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 20.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.69 ms. Allocated memory is still 46.1 MB. Free memory was 20.9 MB in the beginning and 30.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 666.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.5 MB in the beginning and 27.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 768.53 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 30.2 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.39 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 29.9 MB in the end (delta: 302.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 125]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLE_SMToperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 110, overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 37, overapproximation of bitwiseXor at line 33. 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}] [L121] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 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=42occurred 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 0.2.0-2880296 [2020-12-02 16:17:23,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 16:17:23,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 16:17:23,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 16:17:23,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 16:17:23,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 16:17:23,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 16:17:23,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 16:17:23,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 16:17:23,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 16:17:23,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 16:17:23,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 16:17:23,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 16:17:23,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 16:17:23,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 16:17:23,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 16:17:23,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 16:17:23,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 16:17:23,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 16:17:23,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 16:17:23,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 16:17:23,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 16:17:23,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 16:17:23,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 16:17:23,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 16:17:23,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 16:17:23,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 16:17:23,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 16:17:23,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 16:17:23,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 16:17:23,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 16:17:23,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 16:17:23,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 16:17:23,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 16:17:23,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 16:17:23,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 16:17:23,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 16:17:23,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 16:17:23,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 16:17:23,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 16:17:23,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 16:17:23,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 16:17:23,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 16:17:23,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 16:17:23,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 16:17:23,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 16:17:23,985 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 16:17:23,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 16:17:23,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 16:17:23,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 16:17:23,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 16:17:23,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 16:17:23,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 16:17:23,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 16:17:23,987 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 16:17:23,987 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 16:17:23,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 16:17:23,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 16:17:23,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 16:17:23,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 16:17:23,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 16:17:23,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 16:17:23,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 16:17:23,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 16:17:23,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 16:17:23,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 16:17:23,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 16:17:23,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 16:17:23,991 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 16:17:23,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 16:17:23,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 16:17:23,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 16:17:23,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 16:17:23,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-12-02 16:17:24,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 16:17:24,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 16:17:24,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 16:17:24,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 16:17:24,422 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 16:17:24,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-12-02 16:17:24,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce23873f3/19dd997d84084f9c9eedc52ad4876b7d/FLAG22b11ede2 [2020-12-02 16:17:25,232 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 16:17:25,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-12-02 16:17:25,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce23873f3/19dd997d84084f9c9eedc52ad4876b7d/FLAG22b11ede2 [2020-12-02 16:17:25,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce23873f3/19dd997d84084f9c9eedc52ad4876b7d [2020-12-02 16:17:25,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 16:17:25,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 16:17:25,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 16:17:25,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 16:17:25,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 16:17:25,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:25,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48919b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25, skipping insertion in model container [2020-12-02 16:17:25,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:25,593 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 16:17:25,631 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 16:17:25,848 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c[2701,2714] [2020-12-02 16:17:25,852 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:17:25,869 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 16:17:25,914 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c[2701,2714] [2020-12-02 16:17:25,915 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 16:17:25,946 INFO L217 MainTranslator]: Completed translation [2020-12-02 16:17:25,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25 WrapperNode [2020-12-02 16:17:25,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 16:17:25,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 16:17:25,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 16:17:25,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 16:17:25,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:25,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 16:17:26,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 16:17:26,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 16:17:26,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 16:17:26,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (1/1) ... [2020-12-02 16:17:26,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 16:17:26,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 16:17:26,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 16:17:26,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 16:17:26,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (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 [2020-12-02 16:17:26,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 16:17:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-12-02 16:17:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 16:17:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 16:17:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-02 16:17:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 16:17:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 16:17:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 16:17:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-02 16:17:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 16:17:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 16:17:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 16:17:29,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 16:17:29,107 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-02 16:17:29,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:29 BoogieIcfgContainer [2020-12-02 16:17:29,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 16:17:29,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 16:17:29,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 16:17:29,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 16:17:29,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:17:25" (1/3) ... [2020-12-02 16:17:29,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7919633a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:29, skipping insertion in model container [2020-12-02 16:17:29,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:17:25" (2/3) ... [2020-12-02 16:17:29,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7919633a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:17:29, skipping insertion in model container [2020-12-02 16:17:29,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:29" (3/3) ... [2020-12-02 16:17:29,119 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-12-02 16:17:29,135 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 16:17:29,140 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 16:17:29,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 16:17:29,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 16:17:29,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 16:17:29,183 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 16:17:29,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 16:17:29,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 16:17:29,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 16:17:29,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 16:17:29,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 16:17:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-02 16:17:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 16:17:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:17:29,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:17:29,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:17:29,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:17:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-12-02 16:17:29,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:17:29,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355590765] [2020-12-02 16:17:29,236 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 [2020-12-02 16:17:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:17:29,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 16:17:29,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:17:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:29,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:17:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:29,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355590765] [2020-12-02 16:17:29,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:17:29,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 16:17:29,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172388182] [2020-12-02 16:17:29,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 16:17:29,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:17:29,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 16:17:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 16:17:29,875 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-02 16:17:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:17:29,897 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2020-12-02 16:17:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 16:17:29,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 16:17:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:17:29,910 INFO L225 Difference]: With dead ends: 82 [2020-12-02 16:17:29,910 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:17:29,913 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 [2020-12-02 16:17:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:17:29,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:17:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:17:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-12-02 16:17:29,951 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-12-02 16:17:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:17:29,952 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-12-02 16:17:29,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 16:17:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-12-02 16:17:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 16:17:29,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:17:29,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:17:30,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 16:17:30,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:17:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:17:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-12-02 16:17:30,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:17:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817093322] [2020-12-02 16:17:30,172 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 [2020-12-02 16:17:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:17:30,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-02 16:17:30,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:17:32,889 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_fmod_float_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_fmod_float_~x (_ BitVec 32)) (ULTIMATE.start_fmod_float_~y (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) ULTIMATE.start_fmod_float_~y)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~x) ((_ extract 30 23) ULTIMATE.start_fmod_float_~x) ((_ extract 22 0) ULTIMATE.start_fmod_float_~x)) .cse2)) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|)))) (and (= .cse0 .cse1) (= (_ +zero 8 24) .cse2) (= .cse0 .cse3) (= (fp ((_ extract 31 31) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 30 23) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 22 0) |c_ULTIMATE.start_fmod_float_#res|)) (fp.div roundNearestTiesToEven .cse3 .cse1)))))) is different from false [2020-12-02 16:17:33,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 16:17:33,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 16:17:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:33,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:17:35,768 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_fmod_float_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_fmod_float_~x (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#res_10| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|))) (.cse3 (fp.mul c_~CRM (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~x) ((_ extract 30 23) ULTIMATE.start_fmod_float_~x) ((_ extract 22 0) ULTIMATE.start_fmod_float_~x)) (fp ((_ extract 31 31) c_ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) c_ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) c_ULTIMATE.start_fmod_float_~y)))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#res_10|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#res_10|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#res_10|)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) .cse2)) (not (= .cse0 .cse3)) (not (= .cse3 .cse1)) (not (fp.eq .cse2 .cse2))))) is different from true [2020-12-02 16:17:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:36,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817093322] [2020-12-02 16:17:36,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:17:36,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-02 16:17:36,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240777501] [2020-12-02 16:17:36,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 16:17:36,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:17:36,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 16:17:36,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=56, Unknown=2, NotChecked=30, Total=110 [2020-12-02 16:17:36,299 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-12-02 16:17:38,506 WARN L860 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (forall ((|v_ULTIMATE.start_fmod_float_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_fmod_float_~x (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#res_10| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|))) (.cse3 (fp.mul c_~CRM (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~x) ((_ extract 30 23) ULTIMATE.start_fmod_float_~x) ((_ extract 22 0) ULTIMATE.start_fmod_float_~x)) (fp ((_ extract 31 31) c_ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) c_ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) c_ULTIMATE.start_fmod_float_~y)))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#res_10|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#res_10|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#res_10|)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) .cse2)) (not (= .cse0 .cse3)) (not (= .cse3 .cse1)) (not (fp.eq .cse2 .cse2))))) (= (_ +zero 8 24) (fp ((_ extract 31 31) c_ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) c_ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) c_ULTIMATE.start_fmod_float_~y)))) is different from true [2020-12-02 16:17:40,552 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_fmod_float_#t~nondet15_6| (_ BitVec 32)) (|v_ULTIMATE.start_fmod_float_#t~nondet16_6| (_ BitVec 32)) (ULTIMATE.start_fmod_float_~x (_ BitVec 32)) (ULTIMATE.start_fmod_float_~y (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) ULTIMATE.start_fmod_float_~y)))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~x) ((_ extract 30 23) ULTIMATE.start_fmod_float_~x) ((_ extract 22 0) ULTIMATE.start_fmod_float_~x)) .cse2)) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet15_6|))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 30 23) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|) ((_ extract 22 0) |v_ULTIMATE.start_fmod_float_#t~nondet16_6|)))) (and (= .cse0 .cse1) (= (_ +zero 8 24) .cse2) (= .cse0 .cse3) (= (fp ((_ extract 31 31) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 30 23) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 22 0) |c_ULTIMATE.start_fmod_float_#res|)) (fp.div roundNearestTiesToEven .cse3 .cse1)))))) (not (let ((.cse4 (fp ((_ extract 31 31) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 30 23) |c_ULTIMATE.start_fmod_float_#res|) ((_ extract 22 0) |c_ULTIMATE.start_fmod_float_#res|)))) (fp.eq .cse4 .cse4)))) is different from false [2020-12-02 16:17:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:17:41,543 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-02 16:17:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 16:17:41,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-12-02 16:17:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:17:41,546 INFO L225 Difference]: With dead ends: 44 [2020-12-02 16:17:41,546 INFO L226 Difference]: Without dead ends: 39 [2020-12-02 16:17:41,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=32, Invalid=70, Unknown=4, NotChecked=76, Total=182 [2020-12-02 16:17:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-02 16:17:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-02 16:17:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-02 16:17:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-12-02 16:17:41,555 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-12-02 16:17:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:17:41,555 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-12-02 16:17:41,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 16:17:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-12-02 16:17:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 16:17:41,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 16:17:41,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 16:17:41,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 16:17:41,758 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 16:17:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 16:17:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-12-02 16:17:41,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 16:17:41,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492455977] [2020-12-02 16:17:41,765 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 [2020-12-02 16:17:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 16:17:41,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 16:17:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 16:17:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:42,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 16:17:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 16:17:42,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492455977] [2020-12-02 16:17:42,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 16:17:42,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2020-12-02 16:17:42,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277875730] [2020-12-02 16:17:42,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 16:17:42,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 16:17:42,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 16:17:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 16:17:42,161 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 6 states. [2020-12-02 16:17:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 16:17:42,205 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-12-02 16:17:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 16:17:42,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 16:17:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 16:17:42,206 INFO L225 Difference]: With dead ends: 39 [2020-12-02 16:17:42,206 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 16:17:42,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 16:17:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 16:17:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 16:17:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 16:17:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 16:17:42,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-02 16:17:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 16:17:42,208 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 16:17:42,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 16:17:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 16:17:42,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 16:17:42,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 16:17:42,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 16:17:44,653 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 38 DAG size of output: 7 [2020-12-02 16:17:45,388 WARN L197 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 11 [2020-12-02 16:17:45,391 INFO L262 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-12-02 16:17:45,391 INFO L262 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-12-02 16:17:45,391 INFO L262 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,391 INFO L262 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L258 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L258 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-12-02 16:17:45,392 INFO L262 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L265 CegarLoopResult]: At program point L129(lines 112 130) the Hoare annotation is: true [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= roundNearestTiesToEven ~CRM) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fmod_float_~y) ((_ extract 30 23) ULTIMATE.start_fmod_float_~y) ((_ extract 22 0) ULTIMATE.start_fmod_float_~y)))) [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-12-02 16:17:45,393 INFO L262 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L258 CegarLoopResult]: At program point L106(lines 19 107) the Hoare annotation is: (not (let ((.cse0 (fp ((_ extract 31 31) |ULTIMATE.start_fmod_float_#res|) ((_ extract 30 23) |ULTIMATE.start_fmod_float_#res|) ((_ extract 22 0) |ULTIMATE.start_fmod_float_#res|)))) (fp.eq .cse0 .cse0))) [2020-12-02 16:17:45,394 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L262 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L258 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-12-02 16:17:45,394 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L262 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-12-02 16:17:45,394 INFO L258 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L124(lines 124 127) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,395 INFO L262 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-12-02 16:17:45,396 INFO L262 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-12-02 16:17:45,396 INFO L262 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-12-02 16:17:45,396 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-12-02 16:17:45,396 INFO L262 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-12-02 16:17:45,396 INFO L262 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-12-02 16:17:45,396 INFO L258 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-12-02 16:17:45,412 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-02 16:17:45,414 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-02 16:17:45,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:17:45 BoogieIcfgContainer [2020-12-02 16:17:45,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 16:17:45,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 16:17:45,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 16:17:45,418 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 16:17:45,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:17:29" (3/4) ... [2020-12-02 16:17:45,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 16:17:45,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-02 16:17:45,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-02 16:17:45,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 16:17:45,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 16:17:45,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 16:17:45,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 16:17:45,489 INFO L168 Benchmark]: Toolchain (without parser) took 19918.89 ms. Allocated memory is still 50.3 MB. Free memory was 34.6 MB in the beginning and 27.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,490 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 27.1 MB in the beginning and 27.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 16:17:45,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.12 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.57 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,492 INFO L168 Benchmark]: Boogie Preprocessor took 52.36 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 28.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,493 INFO L168 Benchmark]: RCFGBuilder took 3042.65 ms. Allocated memory is still 50.3 MB. Free memory was 28.4 MB in the beginning and 24.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,494 INFO L168 Benchmark]: TraceAbstraction took 16306.01 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 15.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,495 INFO L168 Benchmark]: Witness Printer took 70.21 ms. Allocated memory is still 50.3 MB. Free memory was 15.7 MB in the beginning and 27.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 16:17:45,499 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 27.1 MB in the beginning and 27.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.12 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.57 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.36 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 28.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3042.65 ms. Allocated memory is still 50.3 MB. Free memory was 28.4 MB in the beginning and 24.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16306.01 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 15.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 70.21 ms. Allocated memory is still 50.3 MB. Free memory was 15.7 MB in the beginning and 27.7 MB in the end (delta: -12.1 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is 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(~fp~LONGDOUBLE(\result[31:31], \result[30:23], \result[22:0]), ~fp~LONGDOUBLE(\result[31:31], \result[30:23], \result[22:0])) - 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 Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-12-02 16:17:45,513 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-02 16:17:45,513 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~roundNearestTiesToEven == unknown-~CRM-unknown && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(y[31:31], y[30:23], y[22:0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 6 SDslu, 260 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 39 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 177 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 7 QuantifiedInterpolants, 10267 SizeOfPredicates, 15 NumberOfNonLiveVariables, 194 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...