./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730a.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_0730a.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 8c9e4c7f8995223bc7932e148ca032e092f66eb9 ............................................................................................................................................................................................................................................................................................................. 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_0730a.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 8c9e4c7f8995223bc7932e148ca032e092f66eb9 ......................................................................................................................................................................................................................................................................................................................... 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 23:13:57,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:13:57,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:13:57,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:13:57,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:13:57,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:13:57,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:13:57,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:13:57,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:13:57,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:13:57,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:13:57,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:13:57,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:13:57,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:13:57,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:13:57,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:13:57,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:13:57,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:13:57,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:13:57,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:13:57,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:13:57,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:13:57,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:13:57,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:13:57,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:13:57,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:13:57,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:13:57,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:13:57,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:13:57,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:13:57,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:13:57,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:13:57,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:13:57,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:13:57,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:13:57,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:13:57,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:13:57,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:13:57,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:13:57,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:13:57,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:13:57,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:13:57,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:13:57,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:13:57,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:13:57,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:13:57,490 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:13:57,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:13:57,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:13:57,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:13:57,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:13:57,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:13:57,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:13:57,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:13:57,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:13:57,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:13:57,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:13:57,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:13:57,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:13:57,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:13:57,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:13:57,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:13:57,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:13:57,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:13:57,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:13:57,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:13:57,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:13:57,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:13:57,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:13:57,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:13:57,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:13:57,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-12-01 23:13:57,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:13:57,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:13:57,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:13:57,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:13:57,915 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:13:57,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-01 23:13:57,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44da82bd/5022c4ef89c04d80883aee8389854ee8/FLAG78415956c [2020-12-01 23:13:58,659 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:13:58,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-01 23:13:58,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44da82bd/5022c4ef89c04d80883aee8389854ee8/FLAG78415956c [2020-12-01 23:13:59,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c44da82bd/5022c4ef89c04d80883aee8389854ee8 [2020-12-01 23:13:59,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:13:59,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:13:59,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:13:59,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:13:59,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:13:59,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba3876b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59, skipping insertion in model container [2020-12-01 23:13:59,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:13:59,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:13:59,321 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_0730a.c[3437,3450] [2020-12-01 23:13:59,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:13:59,333 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:13:59,383 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_0730a.c[3437,3450] [2020-12-01 23:13:59,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:13:59,401 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:13:59,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59 WrapperNode [2020-12-01 23:13:59,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:13:59,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:13:59,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:13:59,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:13:59,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:13:59,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:13:59,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:13:59,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:13:59,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:13:59,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:13:59,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:13:59,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:13:59,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (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 23:13:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:13:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:13:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:13:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:13:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:13:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:13:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:13:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:13:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:14:00,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:14:00,273 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:14:00,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:00 BoogieIcfgContainer [2020-12-01 23:14:00,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:14:00,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:14:00,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:14:00,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:14:00,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:13:59" (1/3) ... [2020-12-01 23:14:00,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aad8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:00, skipping insertion in model container [2020-12-01 23:14:00,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59" (2/3) ... [2020-12-01 23:14:00,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aad8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:00, skipping insertion in model container [2020-12-01 23:14:00,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:00" (3/3) ... [2020-12-01 23:14:00,287 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-12-01 23:14:00,304 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:14:00,309 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:14:00,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:14:00,351 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:14:00,351 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:14:00,352 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:14:00,352 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:14:00,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:14:00,352 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:14:00,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:14:00,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:14:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-01 23:14:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:14:00,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:00,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:00,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:00,384 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-12-01 23:14:00,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:14:00,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966612681] [2020-12-01 23:14:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:14:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:00,559 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 23:14:00,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966612681] [2020-12-01 23:14:00,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:00,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:14:00,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782211643] [2020-12-01 23:14:00,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:14:00,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:14:00,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:14:00,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:00,587 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-12-01 23:14:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:00,614 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2020-12-01 23:14:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:14:00,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:14:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:00,628 INFO L225 Difference]: With dead ends: 102 [2020-12-01 23:14:00,628 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 23:14:00,632 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 23:14:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 23:14:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-01 23:14:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-01 23:14:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-12-01 23:14:00,691 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-12-01 23:14:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:00,691 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-12-01 23:14:00,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:14:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-12-01 23:14:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:14:00,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:00,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:00,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:14:00,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-12-01 23:14:00,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:14:00,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861486282] [2020-12-01 23:14:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:14:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:00,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:00,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:00,984 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:14:00,985 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:14:00,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:14:01,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:14:01 BoogieIcfgContainer [2020-12-01 23:14:01,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:14:01,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:14:01,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:14:01,030 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:14:01,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:00" (3/4) ... [2020-12-01 23:14:01,036 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:14:01,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:14:01,041 INFO L168 Benchmark]: Toolchain (without parser) took 2005.64 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 21.5 MB in the beginning and 25.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,042 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:01,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.50 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 20.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.48 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.0 MB in the beginning and 39.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,048 INFO L168 Benchmark]: Boogie Preprocessor took 62.28 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,050 INFO L168 Benchmark]: RCFGBuilder took 705.81 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 38.4 MB in the end (delta: -564.8 kB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,051 INFO L168 Benchmark]: TraceAbstraction took 751.56 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 26.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,054 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 56.6 MB. Free memory was 26.2 MB in the beginning and 25.9 MB in the end (delta: 324.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:01,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.50 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 20.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.48 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.0 MB in the beginning and 39.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.28 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 705.81 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 38.4 MB in the end (delta: -564.8 kB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 751.56 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 26.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.28 ms. Allocated memory is still 56.6 MB. Free memory was 26.2 MB in the beginning and 25.9 MB in the end (delta: 324.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 162]: 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 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L161] COND TRUE !isinf_double(res) [L162] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 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: 71 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=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:14:03,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:14:03,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:14:03,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:14:03,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:14:03,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:14:03,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:14:03,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:14:03,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:14:03,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:14:03,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:14:03,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:14:03,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:14:03,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:14:03,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:14:03,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:14:03,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:14:03,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:14:03,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:14:03,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:14:03,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:14:03,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:14:03,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:14:03,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:14:03,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:14:03,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:14:03,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:14:03,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:14:03,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:14:03,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:14:03,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:14:03,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:14:03,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:14:03,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:14:03,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:14:03,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:14:03,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:14:03,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:14:03,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:14:03,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:14:03,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:14:03,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:14:03,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:14:03,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:14:03,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:14:03,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:14:03,771 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:14:03,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:14:03,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:14:03,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:14:03,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:14:03,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:14:03,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:14:03,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:14:03,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:14:03,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:14:03,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:14:03,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:14:03,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:14:03,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:14:03,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:14:03,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:14:03,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:14:03,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:14:03,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:14:03,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:14:03,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:14:03,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:14:03,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9e4c7f8995223bc7932e148ca032e092f66eb9 [2020-12-01 23:14:04,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:14:04,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:14:04,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:14:04,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:14:04,279 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:14:04,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-01 23:14:04,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07aec7fa/00706411a80d49cfb87ebf6abd738918/FLAGae11385f5 [2020-12-01 23:14:05,112 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:14:05,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2020-12-01 23:14:05,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07aec7fa/00706411a80d49cfb87ebf6abd738918/FLAGae11385f5 [2020-12-01 23:14:05,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07aec7fa/00706411a80d49cfb87ebf6abd738918 [2020-12-01 23:14:05,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:14:05,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:14:05,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:14:05,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:14:05,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:14:05,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e7786a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05, skipping insertion in model container [2020-12-01 23:14:05,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:14:05,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:14:05,733 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_0730a.c[3437,3450] [2020-12-01 23:14:05,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:05,755 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:14:05,804 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_0730a.c[3437,3450] [2020-12-01 23:14:05,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:05,828 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:14:05,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05 WrapperNode [2020-12-01 23:14:05,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:14:05,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:05,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:14:05,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:14:05,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:05,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:14:05,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:14:05,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:14:05,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (1/1) ... [2020-12-01 23:14:05,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:14:05,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:14:05,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:14:05,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:14:05,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (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 23:14:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:14:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:14:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:14:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:14:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:14:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:14:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:14:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:14:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:14:11,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:14:11,862 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:14:11,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:11 BoogieIcfgContainer [2020-12-01 23:14:11,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:14:11,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:14:11,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:14:11,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:14:11,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:14:05" (1/3) ... [2020-12-01 23:14:11,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a19e93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:11, skipping insertion in model container [2020-12-01 23:14:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:05" (2/3) ... [2020-12-01 23:14:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a19e93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:11, skipping insertion in model container [2020-12-01 23:14:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:11" (3/3) ... [2020-12-01 23:14:11,875 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-12-01 23:14:11,895 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:14:11,900 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:14:11,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:14:11,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:14:11,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:14:11,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:14:11,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:14:11,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:14:11,943 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:14:11,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:14:11,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:14:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-01 23:14:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:14:11,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:11,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:11,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:11,972 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2020-12-01 23:14:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059528952] [2020-12-01 23:14:11,986 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 23:14:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:12,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:14:12,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:14:12,496 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 23:14:12,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:14:12,519 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 23:14:12,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059528952] [2020-12-01 23:14:12,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:12,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:14:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369890698] [2020-12-01 23:14:12,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:14:12,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:14:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:14:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:12,544 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-12-01 23:14:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:12,569 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2020-12-01 23:14:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:14:12,571 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:14:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:12,581 INFO L225 Difference]: With dead ends: 102 [2020-12-01 23:14:12,582 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 23:14:12,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 23:14:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-01 23:14:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-01 23:14:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2020-12-01 23:14:12,626 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2020-12-01 23:14:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:12,626 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2020-12-01 23:14:12,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:14:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2020-12-01 23:14:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:14:12,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:12,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:12,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:14:12,839 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2020-12-01 23:14:12,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:12,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766047278] [2020-12-01 23:14:12,844 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 23:14:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:13,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:13,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:13,923 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:14:13,924 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:14:14,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:14:14,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:14:14 BoogieIcfgContainer [2020-12-01 23:14:14,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:14:14,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:14:14,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:14:14,175 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:14:14,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:11" (3/4) ... [2020-12-01 23:14:14,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:14:14,279 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:14:14,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:14:14,283 INFO L168 Benchmark]: Toolchain (without parser) took 8851.08 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 17.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,286 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory was 26.6 MB in the beginning and 26.5 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:14,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.07 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 27.0 MB in the end (delta: -35.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.61 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 24.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,289 INFO L168 Benchmark]: Boogie Preprocessor took 54.69 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 22.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,290 INFO L168 Benchmark]: RCFGBuilder took 5915.77 ms. Allocated memory is still 50.3 MB. Free memory was 22.8 MB in the beginning and 21.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,293 INFO L168 Benchmark]: TraceAbstraction took 2308.14 ms. Allocated memory is still 50.3 MB. Free memory was 20.9 MB in the beginning and 20.5 MB in the end (delta: 423.2 kB). Peak memory consumption was 976.2 kB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,293 INFO L168 Benchmark]: Witness Printer took 104.83 ms. Allocated memory is still 50.3 MB. Free memory was 20.5 MB in the beginning and 17.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:14,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory was 26.6 MB in the beginning and 26.5 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 396.07 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 27.0 MB in the end (delta: -35.7 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.61 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 24.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.69 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 22.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5915.77 ms. Allocated memory is still 50.3 MB. Free memory was 22.8 MB in the beginning and 21.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2308.14 ms. Allocated memory is still 50.3 MB. Free memory was 20.9 MB in the beginning and 20.5 MB in the end (delta: 423.2 kB). Peak memory consumption was 976.2 kB. Max. memory is 16.1 GB. * Witness Printer took 104.83 ms. Allocated memory is still 50.3 MB. Free memory was 20.5 MB in the beginning and 17.6 MB in the end (delta: 2.9 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: 162]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L157] double x = 1.0 / 0.0; [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L158] double res = __ieee754_sqrt(x); [L136] __int32_t hx, lx; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L161] COND TRUE !isinf_double(res) [L162] reach_error() VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 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...