./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ........................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 955f5e50325f07eb13f5ec8c2df35bf16a648c2d ........................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:08:36,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:08:36,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:08:36,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:08:36,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:08:36,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:08:36,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:08:36,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:08:36,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:08:36,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:08:36,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:08:36,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:08:36,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:08:36,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:08:36,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:08:36,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:08:36,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:08:36,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:08:36,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:08:36,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:08:36,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:08:36,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:08:36,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:08:36,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:08:36,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:08:36,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:08:36,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:08:36,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:08:36,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:08:36,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:08:36,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:08:36,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:08:36,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:08:36,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:08:36,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:08:36,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:08:36,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:08:36,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:08:36,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:08:36,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:08:36,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:08:36,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:08:36,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:08:36,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:08:36,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:08:36,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:08:36,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:08:36,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:08:36,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:08:36,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:08:36,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:08:36,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:08:36,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:08:36,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:08:36,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:08:36,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:08:36,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:08:36,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:08:36,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:36,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:08:36,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:08:36,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:08:36,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:08:36,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:08:36,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:08:36,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:08:36,310 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-24 15:08:36,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:08:36,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:08:36,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:08:36,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:08:36,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:08:36,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-24 15:08:36,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00fb46b08/9084370b665e4d33bcb687c2a4d83ecd/FLAG738409051 [2020-10-24 15:08:37,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:08:37,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-24 15:08:37,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00fb46b08/9084370b665e4d33bcb687c2a4d83ecd/FLAG738409051 [2020-10-24 15:08:37,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00fb46b08/9084370b665e4d33bcb687c2a4d83ecd [2020-10-24 15:08:37,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:08:37,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:08:37,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:37,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:08:37,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:08:37,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:37" (1/1) ... [2020-10-24 15:08:37,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb4c428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:37, skipping insertion in model container [2020-10-24 15:08:37,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:37" (1/1) ... [2020-10-24 15:08:37,900 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:08:37,916 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:08:38,128 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:38,137 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:08:38,158 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:38,176 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:08:38,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38 WrapperNode [2020-10-24 15:08:38,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:38,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:38,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:08:38,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:08:38,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:38,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:08:38,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:08:38,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:08:38,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... [2020-10-24 15:08:38,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:08:38,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:08:38,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:08:38,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:08:38,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:38,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:08:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:08:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:08:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:08:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:08:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:08:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:08:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:08:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:08:38,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:08:38,736 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:08:38,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:38 BoogieIcfgContainer [2020-10-24 15:08:38,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:08:38,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:08:38,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:08:38,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:08:38,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:08:37" (1/3) ... [2020-10-24 15:08:38,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4826ecb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:38, skipping insertion in model container [2020-10-24 15:08:38,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:38" (2/3) ... [2020-10-24 15:08:38,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4826ecb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:38, skipping insertion in model container [2020-10-24 15:08:38,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:38" (3/3) ... [2020-10-24 15:08:38,751 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-24 15:08:38,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:08:38,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:08:38,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:08:38,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:08:38,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:08:38,884 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:08:38,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:08:38,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:08:38,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:08:38,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:08:38,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:08:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-24 15:08:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 15:08:38,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:38,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:38,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-24 15:08:38,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:08:38,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480209022] [2020-10-24 15:08:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:08:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:08:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:39,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480209022] [2020-10-24 15:08:39,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:08:39,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:08:39,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939137331] [2020-10-24 15:08:39,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:08:39,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:08:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:08:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:39,141 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-24 15:08:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:08:39,162 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-24 15:08:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:08:39,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 15:08:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:08:39,174 INFO L225 Difference]: With dead ends: 37 [2020-10-24 15:08:39,174 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:08:39,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:08:39,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:08:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:08:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 15:08:39,219 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-24 15:08:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:08:39,219 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 15:08:39,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:08:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 15:08:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:08:39,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:39,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:39,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:08:39,222 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:39,227 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-24 15:08:39,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:08:39,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561359964] [2020-10-24 15:08:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:08:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:08:39,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:08:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:08:39,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:08:39,403 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:08:39,403 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:08:39,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:08:39,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:08:39 BoogieIcfgContainer [2020-10-24 15:08:39,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:08:39,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:08:39,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:08:39,458 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:08:39,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:38" (3/4) ... [2020-10-24 15:08:39,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:08:39,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:08:39,470 INFO L168 Benchmark]: Toolchain (without parser) took 1595.48 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 36.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:39,472 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:39,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.73 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:39,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 26.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:39,476 INFO L168 Benchmark]: Boogie Preprocessor took 31.34 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:39,478 INFO L168 Benchmark]: RCFGBuilder took 484.42 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 21.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:39,479 INFO L168 Benchmark]: TraceAbstraction took 715.22 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 36.8 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:39,480 INFO L168 Benchmark]: Witness Printer took 5.93 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 36.4 MB in the end (delta: 347.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:39,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.73 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 26.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.34 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 484.42 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 21.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 715.22 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 36.8 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.93 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 36.4 MB in the end (delta: 347.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 51. Possible FailurePath: [L47] float x = 0.0f; [L15] __uint32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1011a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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-ee8e70e [2020-10-24 15:08:41,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:08:41,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:08:41,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:08:41,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:08:41,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:08:41,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:08:41,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:08:41,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:08:41,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:08:41,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:08:41,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:08:41,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:08:41,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:08:41,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:08:41,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:08:41,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:08:41,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:08:41,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:08:41,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:08:42,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:08:42,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:08:42,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:08:42,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:08:42,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:08:42,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:08:42,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:08:42,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:08:42,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:08:42,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:08:42,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:08:42,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:08:42,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:08:42,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:08:42,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:08:42,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:08:42,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:08:42,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:08:42,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:08:42,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:08:42,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:08:42,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:08:42,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:08:42,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:08:42,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:08:42,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:08:42,069 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:08:42,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:08:42,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:08:42,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:08:42,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:08:42,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:08:42,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:08:42,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:08:42,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:08:42,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:08:42,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:08:42,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:08:42,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:08:42,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:08:42,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:08:42,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:08:42,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:08:42,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:08:42,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:42,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:08:42,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:08:42,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:08:42,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:08:42,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:08:42,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:08:42,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:08:42,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:08:42,077 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955f5e50325f07eb13f5ec8c2df35bf16a648c2d [2020-10-24 15:08:42,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:08:42,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:08:42,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:08:42,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:08:42,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:08:42,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-24 15:08:42,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73abc909f/d88ceb7131ad46b18acd0b4419e5d7bf/FLAG6c04f45a0 [2020-10-24 15:08:43,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:08:43,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2020-10-24 15:08:43,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73abc909f/d88ceb7131ad46b18acd0b4419e5d7bf/FLAG6c04f45a0 [2020-10-24 15:08:43,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73abc909f/d88ceb7131ad46b18acd0b4419e5d7bf [2020-10-24 15:08:43,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:08:43,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:08:43,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:43,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:08:43,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:08:43,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:43" (1/1) ... [2020-10-24 15:08:43,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a97f4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:43, skipping insertion in model container [2020-10-24 15:08:43,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:08:43" (1/1) ... [2020-10-24 15:08:43,636 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:08:43,659 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:08:43,975 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:44,002 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:08:44,047 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:08:44,080 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:08:44,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44 WrapperNode [2020-10-24 15:08:44,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:08:44,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:44,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:08:44,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:08:44,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:08:44,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:08:44,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:08:44,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:08:44,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... [2020-10-24 15:08:44,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:08:44,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:08:44,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:08:44,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:08:44,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:08:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:08:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:08:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-24 15:08:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:08:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:08:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:08:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 15:08:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 15:08:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:08:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:08:44,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:08:44,742 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:08:44,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:44 BoogieIcfgContainer [2020-10-24 15:08:44,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:08:44,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:08:44,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:08:44,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:08:44,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:08:43" (1/3) ... [2020-10-24 15:08:44,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c638205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:44, skipping insertion in model container [2020-10-24 15:08:44,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:08:44" (2/3) ... [2020-10-24 15:08:44,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c638205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:08:44, skipping insertion in model container [2020-10-24 15:08:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:44" (3/3) ... [2020-10-24 15:08:44,754 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-10-24 15:08:44,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:08:44,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:08:44,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:08:44,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:08:44,823 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:08:44,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:08:44,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:08:44,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:08:44,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:08:44,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:08:44,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:08:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-24 15:08:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 15:08:44,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:44,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:44,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-10-24 15:08:44,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:08:44,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940110512] [2020-10-24 15:08:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 15:08:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:08:44,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:08:44,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:08:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:45,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:08:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:45,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940110512] [2020-10-24 15:08:45,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:08:45,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:08:45,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341105895] [2020-10-24 15:08:45,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:08:45,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:08:45,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:08:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:45,047 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-24 15:08:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:08:45,068 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-24 15:08:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:08:45,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 15:08:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:08:45,080 INFO L225 Difference]: With dead ends: 37 [2020-10-24 15:08:45,081 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:08:45,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:08:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:08:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:08:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:08:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 15:08:45,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-10-24 15:08:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:08:45,125 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 15:08:45,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:08:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 15:08:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:08:45,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:45,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:45,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:08:45,343 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-10-24 15:08:45,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:08:45,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729139463] [2020-10-24 15:08:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 15:08:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:08:45,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:08:45,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:08:45,524 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 15:08:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:45,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:08:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:45,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729139463] [2020-10-24 15:08:45,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:08:45,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 15:08:45,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331070045] [2020-10-24 15:08:45,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:08:45,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:08:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:08:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 15:08:45,713 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-24 15:08:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:08:45,841 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-10-24 15:08:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:08:45,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-10-24 15:08:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:08:45,842 INFO L225 Difference]: With dead ends: 19 [2020-10-24 15:08:45,843 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:08:45,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-24 15:08:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:08:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:08:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:08:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 15:08:45,849 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-10-24 15:08:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:08:45,849 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 15:08:45,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:08:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 15:08:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:08:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:08:45,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:08:46,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:08:46,063 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:08:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:08:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2020-10-24 15:08:46,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:08:46,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671398908] [2020-10-24 15:08:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 15:08:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:08:46,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:08:46,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:08:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:46,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:08:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:08:46,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671398908] [2020-10-24 15:08:46,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:08:46,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-10-24 15:08:46,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001430315] [2020-10-24 15:08:46,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 15:08:46,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:08:46,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 15:08:46,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-24 15:08:46,553 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 14 states. [2020-10-24 15:08:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:08:47,002 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-10-24 15:08:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 15:08:47,003 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-24 15:08:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:08:47,003 INFO L225 Difference]: With dead ends: 16 [2020-10-24 15:08:47,003 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 15:08:47,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-24 15:08:47,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 15:08:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 15:08:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 15:08:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 15:08:47,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-24 15:08:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:08:47,005 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 15:08:47,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 15:08:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 15:08:47,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 15:08:47,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:08:47,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 15:08:47,432 INFO L277 CegarLoopResult]: At program point L56(lines 41 57) the Hoare annotation is: true [2020-10-24 15:08:47,433 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 15:08:47,433 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 15:08:47,433 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 15:08:47,433 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-10-24 15:08:47,433 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short17| (= (_ +zero 8 24) (fp ((_ extract 31 31) |ULTIMATE.start_fabs_float_#res|) ((_ extract 30 23) |ULTIMATE.start_fabs_float_#res|) ((_ extract 22 0) |ULTIMATE.start_fabs_float_#res|))) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (exists ((ULTIMATE.start_fabs_float_~ix~0 (_ BitVec 32))) (= ULTIMATE.start_main_~res~0 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (= (_ bv0 32) (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~x)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~x) ((_ extract 30 23) ULTIMATE.start_fabs_float_~x) ((_ extract 22 0) ULTIMATE.start_fabs_float_~x)))) [2020-10-24 15:08:47,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 15:08:47,434 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2020-10-24 15:08:47,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 15:08:47,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 15:08:47,434 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-10-24 15:08:47,434 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~x) ((_ extract 30 23) ULTIMATE.start_fabs_float_~x) ((_ extract 22 0) ULTIMATE.start_fabs_float_~x))) [2020-10-24 15:08:47,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 15:08:47,435 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-10-24 15:08:47,435 INFO L274 CegarLoopResult]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2020-10-24 15:08:47,435 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2020-10-24 15:08:47,435 INFO L270 CegarLoopResult]: At program point L38(lines 29 39) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short17| (= (_ +zero 8 24) (fp ((_ extract 31 31) |ULTIMATE.start_fabs_float_#res|) ((_ extract 30 23) |ULTIMATE.start_fabs_float_#res|) ((_ extract 22 0) |ULTIMATE.start_fabs_float_#res|))) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (exists ((ULTIMATE.start_fabs_float_~ix~0 (_ BitVec 32))) (= ULTIMATE.start_main_~res~0 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ bv0 32) (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~x)) (exists ((ULTIMATE.start_fabs_float_~ix~0 (_ BitVec 32))) (= (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0) ULTIMATE.start___signbit_float_~w~0)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~x) ((_ extract 30 23) ULTIMATE.start_fabs_float_~x) ((_ extract 22 0) ULTIMATE.start_fabs_float_~x)))) [2020-10-24 15:08:47,435 INFO L270 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) |ULTIMATE.start_fabs_float_#res|) ((_ extract 30 23) |ULTIMATE.start_fabs_float_#res|) ((_ extract 22 0) |ULTIMATE.start_fabs_float_#res|))) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 30 23) ULTIMATE.start_fabs_float_~ix~0) ((_ extract 22 0) ULTIMATE.start_fabs_float_~ix~0))) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start_fabs_float_~x) ((_ extract 30 23) ULTIMATE.start_fabs_float_~x) ((_ extract 22 0) ULTIMATE.start_fabs_float_~x)))) [2020-10-24 15:08:47,435 INFO L274 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-10-24 15:08:47,436 INFO L274 CegarLoopResult]: For program point L51-2(lines 51 54) no Hoare annotation was computed. [2020-10-24 15:08:47,452 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,453 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,454 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:08:47 BoogieIcfgContainer [2020-10-24 15:08:47,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:08:47,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:08:47,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:08:47,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:08:47,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:08:44" (3/4) ... [2020-10-24 15:08:47,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 15:08:47,476 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-24 15:08:47,476 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 15:08:47,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 15:08:47,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 15:08:47,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:08:47,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:08:47,517 INFO L168 Benchmark]: Toolchain (without parser) took 3909.28 ms. Allocated memory was 52.4 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Free memory was 28.9 MB in the beginning and 50.2 MB in the end (delta: -21.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,517 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:47,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.47 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 30.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.70 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 29.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:08:47,520 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,521 INFO L168 Benchmark]: RCFGBuilder took 561.22 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.7 MB in the beginning and 37.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,522 INFO L168 Benchmark]: TraceAbstraction took 2712.95 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 52.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,523 INFO L168 Benchmark]: Witness Printer took 54.25 ms. Allocated memory is still 79.7 MB. Free memory was 52.3 MB in the beginning and 50.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:08:47,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.47 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 30.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.70 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 29.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 561.22 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.7 MB in the beginning and 37.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2712.95 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.5 MB in the beginning and 52.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * Witness Printer took 54.25 ms. Allocated memory is still 79.7 MB. Free memory was 52.3 MB in the beginning and 50.2 MB in the end (delta: 2.0 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(\result[31:31], \result[30:23], \result[22:0]) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(x[31:31], x[30:23], x[22:0]) - InvariantResult [Line: 29]: Loop Invariant [2020-10-24 15:08:47,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] Derived loop invariant: ((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(\result[31:31], \result[30:23], \result[22:0])) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && (\exists ULTIMATE.start_fabs_float_~ix~0 : bv32 :: res == ~bvand32(2147483647bv32, ULTIMATE.start_fabs_float_~ix~0))) && \result == 0bv32) && 0bv32 == ~bvand32(2147483648bv32, x)) && (\exists ULTIMATE.start_fabs_float_~ix~0 : bv32 :: ~bvand32(2147483647bv32, ULTIMATE.start_fabs_float_~ix~0) == w)) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(x[31:31], x[30:23], x[22:0]) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(x[31:31], x[30:23], x[22:0]) - InvariantResult [Line: 32]: Loop Invariant [2020-10-24 15:08:47,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] [2020-10-24 15:08:47,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fabs_float_~ix~0,QUANTIFIED] Derived loop invariant: ((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(\result[31:31], \result[30:23], \result[22:0])) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(ix[31:31], ix[30:23], ix[22:0])) && (\exists ULTIMATE.start_fabs_float_~ix~0 : bv32 :: res == ~bvand32(2147483647bv32, ULTIMATE.start_fabs_float_~ix~0))) && 0bv32 == ~bvand32(2147483648bv32, x)) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(x[31:31], x[30:23], x[22:0]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 78 SDslu, 41 SDs, 0 SdLazy, 46 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 127 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 13 QuantifiedInterpolants, 3818 SizeOfPredicates, 18 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 21 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...