./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ..................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:19:59,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:19:59,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:19:59,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:19:59,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:19:59,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:19:59,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:19:59,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:19:59,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:19:59,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:19:59,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:19:59,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:19:59,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:19:59,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:19:59,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:19:59,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:19:59,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:19:59,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:19:59,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:19:59,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:19:59,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:19:59,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:19:59,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:19:59,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:19:59,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:19:59,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:19:59,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:19:59,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:19:59,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:19:59,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:19:59,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:19:59,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:19:59,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:19:59,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:19:59,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:19:59,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:19:59,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:19:59,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:19:59,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:19:59,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:19:59,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:19:59,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:19:59,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:19:59,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:19:59,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:19:59,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:19:59,328 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:19:59,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:19:59,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:19:59,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:19:59,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:19:59,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:19:59,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:19:59,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:19:59,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:19:59,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:19:59,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:19:59,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:19:59,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:19:59,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:19:59,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:19:59,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:19:59,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:19:59,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:19:59,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:19:59,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:19:59,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-12-01 23:19:59,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:19:59,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:19:59,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:19:59,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:19:59,842 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:19:59,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-12-01 23:19:59,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6668a15e/92ca657f794a4a149869c22bba1ed58d/FLAGef4097596 [2020-12-01 23:20:00,504 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:00,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-12-01 23:20:00,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6668a15e/92ca657f794a4a149869c22bba1ed58d/FLAGef4097596 [2020-12-01 23:20:00,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6668a15e/92ca657f794a4a149869c22bba1ed58d [2020-12-01 23:20:00,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:00,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:00,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:00,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:00,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:00,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:00" (1/1) ... [2020-12-01 23:20:00,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498ea920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:00, skipping insertion in model container [2020-12-01 23:20:00,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:00" (1/1) ... [2020-12-01 23:20:00,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:00,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:01,107 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c[1640,1653] [2020-12-01 23:20:01,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:01,123 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:01,160 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c[1640,1653] [2020-12-01 23:20:01,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:01,181 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:01,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01 WrapperNode [2020-12-01 23:20:01,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:01,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:01,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:01,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:01,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:01,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:01,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:01,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:01,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... [2020-12-01 23:20:01,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:01,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:01,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:01,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:01,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:01,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:01,790 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:20:01,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:01 BoogieIcfgContainer [2020-12-01 23:20:01,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:01,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:01,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:01,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:01,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:00" (1/3) ... [2020-12-01 23:20:01,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6f33f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:01, skipping insertion in model container [2020-12-01 23:20:01,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:01" (2/3) ... [2020-12-01 23:20:01,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6f33f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:01, skipping insertion in model container [2020-12-01 23:20:01,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:01" (3/3) ... [2020-12-01 23:20:01,803 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-12-01 23:20:01,821 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:01,826 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:01,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:01,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:01,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:01,894 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:01,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:01,895 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:01,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:01,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:01,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-01 23:20:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:01,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:01,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:01,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:01,931 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-12-01 23:20:01,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:01,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159989449] [2020-12-01 23:20:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:02,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159989449] [2020-12-01 23:20:02,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:02,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:02,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788960465] [2020-12-01 23:20:02,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:02,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:02,191 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-01 23:20:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:02,214 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-12-01 23:20:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:02,217 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:02,240 INFO L225 Difference]: With dead ends: 34 [2020-12-01 23:20:02,241 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 23:20:02,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 23:20:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-01 23:20:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-01 23:20:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-01 23:20:02,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-12-01 23:20:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:02,306 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-01 23:20:02,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-01 23:20:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:20:02,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:02,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:02,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:02,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-12-01 23:20:02,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:02,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714425594] [2020-12-01 23:20:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:02,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:02,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:02,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:02,585 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:02,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:02,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:02 BoogieIcfgContainer [2020-12-01 23:20:02,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:02,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:02,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:02,624 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:02,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:01" (3/4) ... [2020-12-01 23:20:02,628 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:02,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:02,630 INFO L168 Benchmark]: Toolchain (without parser) took 1751.20 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 34.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,631 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:02,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 62.9 MB. Free memory was 39.4 MB in the beginning and 44.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.30 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 42.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,634 INFO L168 Benchmark]: Boogie Preprocessor took 41.94 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 41.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,634 INFO L168 Benchmark]: RCFGBuilder took 520.36 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 41.3 MB in the end (delta: -173.0 kB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,635 INFO L168 Benchmark]: TraceAbstraction took 828.67 ms. Allocated memory is still 62.9 MB. Free memory was 40.7 MB in the beginning and 34.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:02,636 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 62.9 MB. Free memory was 34.8 MB in the beginning and 34.4 MB in the end (delta: 321.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:02,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 62.9 MB. Free memory was 39.4 MB in the beginning and 44.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.30 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 42.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.94 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 41.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.36 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 41.3 MB in the end (delta: -173.0 kB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 828.67 ms. Allocated memory is still 62.9 MB. Free memory was 40.7 MB in the beginning and 34.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.93 ms. Allocated memory is still 62.9 MB. Free memory was 34.8 MB in the beginning and 34.4 MB in the end (delta: 321.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L75] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=18occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 0.2.0-096883e [2020-12-01 23:20:05,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:05,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:05,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:05,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:05,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:05,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:05,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:05,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:05,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:05,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:05,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:05,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:05,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:05,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:05,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:05,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:05,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:05,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:05,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:05,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:05,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:05,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:05,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:05,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:05,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:05,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:05,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:05,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:05,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:05,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:05,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:05,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:05,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:05,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:05,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:05,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:05,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:05,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:05,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:05,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:05,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:05,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:05,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:05,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:05,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:05,401 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:05,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:05,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:05,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:05,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:05,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:05,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:05,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:05,404 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:05,405 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:05,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:05,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:05,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:05,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:05,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:05,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:05,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:05,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:05,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:05,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:05,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:05,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:05,408 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:05,408 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:05,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:05,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:05,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:05,409 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-12-01 23:20:05,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:05,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:05,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:05,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:05,842 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:05,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-12-01 23:20:05,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74badcc70/3d5a3cddce1b4512ac2b6879f4b01c45/FLAG4a66eeb16 [2020-12-01 23:20:06,511 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:06,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-12-01 23:20:06,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74badcc70/3d5a3cddce1b4512ac2b6879f4b01c45/FLAG4a66eeb16 [2020-12-01 23:20:06,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74badcc70/3d5a3cddce1b4512ac2b6879f4b01c45 [2020-12-01 23:20:06,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:06,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:06,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:06,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:06,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:06,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:06" (1/1) ... [2020-12-01 23:20:06,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b985f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:06, skipping insertion in model container [2020-12-01 23:20:06,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:06" (1/1) ... [2020-12-01 23:20:06,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:06,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:07,151 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c[1640,1653] [2020-12-01 23:20:07,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:07,177 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:07,207 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c[1640,1653] [2020-12-01 23:20:07,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:07,235 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07 WrapperNode [2020-12-01 23:20:07,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:07,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:07,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:07,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:07,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:07,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:07,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:07,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:07,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... [2020-12-01 23:20:07,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:07,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:07,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:07,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:07,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:07,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:08,015 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:08,015 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:20:08,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:08 BoogieIcfgContainer [2020-12-01 23:20:08,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:08,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:08,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:08,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:08,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:06" (1/3) ... [2020-12-01 23:20:08,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306163a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:08, skipping insertion in model container [2020-12-01 23:20:08,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:07" (2/3) ... [2020-12-01 23:20:08,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306163a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:08, skipping insertion in model container [2020-12-01 23:20:08,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:08" (3/3) ... [2020-12-01 23:20:08,042 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-12-01 23:20:08,070 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:08,078 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:08,089 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:08,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:08,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:08,140 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:08,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:08,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:08,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:08,140 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:08,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-01 23:20:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:08,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:08,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:08,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-12-01 23:20:08,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:08,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854029991] [2020-12-01 23:20:08,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:08,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:08,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:08,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854029991] [2020-12-01 23:20:08,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:08,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:08,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493079236] [2020-12-01 23:20:08,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:08,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:08,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:08,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:08,385 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-01 23:20:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:08,401 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-12-01 23:20:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:08,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:08,417 INFO L225 Difference]: With dead ends: 34 [2020-12-01 23:20:08,417 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 23:20:08,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 23:20:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-01 23:20:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-01 23:20:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-01 23:20:08,452 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-12-01 23:20:08,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:08,452 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-01 23:20:08,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-01 23:20:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:20:08,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:08,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:08,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:08,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-12-01 23:20:08,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:08,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486328978] [2020-12-01 23:20:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:08,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:09,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:09,181 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:20:09,181 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:09,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:20:09,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:09 BoogieIcfgContainer [2020-12-01 23:20:09,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:09,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:09,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:09,420 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:09,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:08" (3/4) ... [2020-12-01 23:20:09,422 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:20:09,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:20:09,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:09,516 INFO L168 Benchmark]: Toolchain (without parser) took 2697.28 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 32.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,517 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 29.5 MB in the beginning and 29.4 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:09,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.17 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:09,519 INFO L168 Benchmark]: Boogie Preprocessor took 36.76 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,520 INFO L168 Benchmark]: RCFGBuilder took 689.60 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.6 MB in the beginning and 24.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,520 INFO L168 Benchmark]: TraceAbstraction took 1391.61 ms. Allocated memory is still 54.5 MB. Free memory was 24.5 MB in the beginning and 34.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,521 INFO L168 Benchmark]: Witness Printer took 94.47 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 32.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:09,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 29.5 MB in the beginning and 29.4 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.17 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.76 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 689.60 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.6 MB in the beginning and 24.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1391.61 ms. Allocated memory is still 54.5 MB. Free memory was 24.5 MB in the beginning and 34.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Witness Printer took 94.47 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 32.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 75]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L75] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...