./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0970a.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 16ed93f7e94a59686881f163258e4b8f85fe8ac8 .................................................................................................................................................................................................................................................................................................................................................................... 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_0970a.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 16ed93f7e94a59686881f163258e4b8f85fe8ac8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 21:52:12,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:52:12,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:52:12,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:52:12,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:52:12,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:52:12,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:52:12,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:52:12,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:52:12,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:52:12,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:52:12,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:52:12,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:52:12,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:52:12,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:52:12,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:52:12,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:52:12,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:52:12,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:52:12,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:52:12,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:52:12,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:52:12,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:52:12,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:52:12,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:52:12,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:52:12,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:52:12,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:52:12,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:52:12,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:52:12,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:52:12,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:52:12,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:52:12,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:52:12,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:52:12,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:52:12,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:52:12,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:52:12,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:52:12,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:52:12,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:52:12,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:52:12,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:52:12,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:52:12,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:52:12,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:52:12,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:52:12,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:52:12,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:52:12,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:52:12,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:52:12,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:52:12,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:52:12,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:52:12,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:52:12,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:52:12,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:52:12,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:52:12,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:52:12,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:52:12,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:52:12,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:52:12,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:52:12,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:12,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:52:12,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:52:12,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:52:12,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:52:12,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:52:12,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:52:12,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:52:12,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16ed93f7e94a59686881f163258e4b8f85fe8ac8 [2020-10-25 21:52:12,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:52:12,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:52:12,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:52:12,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:52:12,916 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:52:12,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2020-10-25 21:52:12,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2855cf646/c63c1d98790644378bbb7b348031226d/FLAG9d9879031 [2020-10-25 21:52:13,642 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:52:13,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2020-10-25 21:52:13,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2855cf646/c63c1d98790644378bbb7b348031226d/FLAG9d9879031 [2020-10-25 21:52:13,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2855cf646/c63c1d98790644378bbb7b348031226d [2020-10-25 21:52:13,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:52:13,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:52:13,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:13,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:52:13,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:52:13,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:13" (1/1) ... [2020-10-25 21:52:13,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d91c49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:13, skipping insertion in model container [2020-10-25 21:52:13,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:13" (1/1) ... [2020-10-25 21:52:13,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:52:14,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:52:14,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:14,251 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:52:14,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:14,320 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:52:14,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14 WrapperNode [2020-10-25 21:52:14,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:14,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:14,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:52:14,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:52:14,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:14,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:52:14,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:52:14,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:52:14,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... [2020-10-25 21:52:14,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:52:14,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:52:14,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:52:14,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:52:14,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:52:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:52:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:52:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:52:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:52:15,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:52:15,319 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-10-25 21:52:15,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:15 BoogieIcfgContainer [2020-10-25 21:52:15,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:52:15,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:52:15,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:52:15,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:52:15,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:52:13" (1/3) ... [2020-10-25 21:52:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b868a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:15, skipping insertion in model container [2020-10-25 21:52:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:14" (2/3) ... [2020-10-25 21:52:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b868a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:15, skipping insertion in model container [2020-10-25 21:52:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:15" (3/3) ... [2020-10-25 21:52:15,333 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2020-10-25 21:52:15,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:52:15,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:52:15,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:52:15,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:52:15,431 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:52:15,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:52:15,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:52:15,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:52:15,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:52:15,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:52:15,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:52:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-25 21:52:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:52:15,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:15,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:15,462 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1392627184, now seen corresponding path program 1 times [2020-10-25 21:52:15,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:52:15,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521133745] [2020-10-25 21:52:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:52:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:15,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521133745] [2020-10-25 21:52:15,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:15,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:52:15,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578535883] [2020-10-25 21:52:15,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:52:15,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:52:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:52:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:15,669 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-10-25 21:52:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:15,694 INFO L93 Difference]: Finished difference Result 96 states and 157 transitions. [2020-10-25 21:52:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:52:15,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-25 21:52:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:15,706 INFO L225 Difference]: With dead ends: 96 [2020-10-25 21:52:15,706 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 21:52:15,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:15,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 21:52:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-25 21:52:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 21:52:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-10-25 21:52:15,755 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 12 [2020-10-25 21:52:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:15,756 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-10-25 21:52:15,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:52:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-10-25 21:52:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:52:15,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:15,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:15,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:52:15,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1009660131, now seen corresponding path program 1 times [2020-10-25 21:52:15,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:52:15,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255941495] [2020-10-25 21:52:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:52:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:15,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255941495] [2020-10-25 21:52:15,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:15,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:52:15,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66087932] [2020-10-25 21:52:15,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:52:15,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:52:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:52:15,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:52:15,883 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 3 states. [2020-10-25 21:52:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:15,903 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-10-25 21:52:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:52:15,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 21:52:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:15,905 INFO L225 Difference]: With dead ends: 83 [2020-10-25 21:52:15,905 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 21:52:15,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:52:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 21:52:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-25 21:52:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 21:52:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-10-25 21:52:15,914 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 13 [2020-10-25 21:52:15,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:15,915 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-10-25 21:52:15,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:52:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-10-25 21:52:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 21:52:15,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:15,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:15,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:52:15,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 34829304, now seen corresponding path program 1 times [2020-10-25 21:52:15,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:52:15,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799844661] [2020-10-25 21:52:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:52:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:15,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:16,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:16,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:52:16,145 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:52:16,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 21:52:16,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:52:16 BoogieIcfgContainer [2020-10-25 21:52:16,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:52:16,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:52:16,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:52:16,233 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:52:16,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:15" (3/4) ... [2020-10-25 21:52:16,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:52:16,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:52:16,244 INFO L168 Benchmark]: Toolchain (without parser) took 2292.93 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 23.5 MB in the beginning and 50.9 MB in the end (delta: -27.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:16,244 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:16,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 22.8 MB in the end (delta: 39.6 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:16,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 20.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:16,251 INFO L168 Benchmark]: Boogie Preprocessor took 81.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.3 MB in the beginning and 39.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:16,252 INFO L168 Benchmark]: RCFGBuilder took 839.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 25.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:16,253 INFO L168 Benchmark]: TraceAbstraction took 907.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 24.7 MB in the beginning and 51.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:16,254 INFO L168 Benchmark]: Witness Printer took 7.17 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 50.9 MB in the end (delta: 470.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:16,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 22.8 MB in the end (delta: 39.6 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 20.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.3 MB in the beginning and 39.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 839.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 25.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 907.65 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 24.7 MB in the beginning and 51.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.17 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 50.9 MB in the end (delta: 470.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 163, overapproximation of bitwiseAnd at line 172, overapproximation of someBinaryArithmeticDOUBLEoperation at line 147. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L182] double x = __VERIFIER_nondet_double(); [L184] x < 0 && isfinite_double(x) [L166] __int32_t hx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L184] x < 0 && isfinite_double(x) VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L184] COND TRUE x < 0 && isfinite_double(x) [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L133] COND FALSE !(hx < 0x00100000) VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L146] COND TRUE hx >= 0x7ff00000 [L147] return x + x; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L186] double res = __ieee754_log10(x); [L163] return x != x; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L189] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0970a.c", 3, "reach_error") VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 0 SDslu, 55 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:52:18,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:52:18,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:52:18,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:52:18,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:52:18,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:52:18,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:52:19,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:52:19,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:52:19,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:52:19,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:52:19,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:52:19,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:52:19,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:52:19,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:52:19,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:52:19,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:52:19,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:52:19,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:52:19,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:52:19,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:52:19,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:52:19,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:52:19,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:52:19,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:52:19,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:52:19,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:52:19,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:52:19,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:52:19,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:52:19,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:52:19,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:52:19,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:52:19,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:52:19,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:52:19,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:52:19,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:52:19,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:52:19,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:52:19,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:52:19,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:52:19,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:52:19,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:52:19,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:52:19,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:52:19,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:52:19,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:52:19,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:52:19,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:52:19,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:52:19,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:52:19,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:52:19,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:52:19,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:52:19,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:52:19,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:52:19,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:52:19,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:52:19,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:52:19,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:19,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:52:19,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:52:19,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:52:19,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16ed93f7e94a59686881f163258e4b8f85fe8ac8 [2020-10-25 21:52:19,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:52:19,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:52:19,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:52:19,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:52:19,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:52:19,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2020-10-25 21:52:19,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038968a7c/1a9403ca4a104bea88fcc1e33c5912f9/FLAG07e9def4f [2020-10-25 21:52:20,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:52:20,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2020-10-25 21:52:20,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038968a7c/1a9403ca4a104bea88fcc1e33c5912f9/FLAG07e9def4f [2020-10-25 21:52:20,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038968a7c/1a9403ca4a104bea88fcc1e33c5912f9 [2020-10-25 21:52:20,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:52:20,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:52:20,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:20,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:52:20,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:52:20,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:20" (1/1) ... [2020-10-25 21:52:20,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e479e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:20, skipping insertion in model container [2020-10-25 21:52:20,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:20" (1/1) ... [2020-10-25 21:52:20,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:52:20,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:52:21,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:21,159 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:52:21,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:21,281 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:52:21,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21 WrapperNode [2020-10-25 21:52:21,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:21,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:21,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:52:21,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:52:21,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:21,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:52:21,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:52:21,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:52:21,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... [2020-10-25 21:52:21,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:52:21,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:52:21,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:52:21,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:52:21,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:52:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:52:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:52:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:52:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:52:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:52:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:52:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:52:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:52:53,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:52:53,056 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-10-25 21:52:53,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:53 BoogieIcfgContainer [2020-10-25 21:52:53,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:52:53,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:52:53,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:52:53,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:52:53,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:52:20" (1/3) ... [2020-10-25 21:52:53,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a5255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:53, skipping insertion in model container [2020-10-25 21:52:53,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:21" (2/3) ... [2020-10-25 21:52:53,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1a5255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:53, skipping insertion in model container [2020-10-25 21:52:53,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:53" (3/3) ... [2020-10-25 21:52:53,069 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2020-10-25 21:52:53,079 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:52:53,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:52:53,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:52:53,128 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:52:53,128 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:52:53,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:52:53,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:52:53,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:52:53,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:52:53,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:52:53,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:52:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-25 21:52:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 21:52:53,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:53,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:53,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:53,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1392627184, now seen corresponding path program 1 times [2020-10-25 21:52:53,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:52:53,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964836202] [2020-10-25 21:52:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 21:52:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:53,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:52:53,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:52:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:53,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:52:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:53,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964836202] [2020-10-25 21:52:53,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:53,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:52:53,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575759781] [2020-10-25 21:52:53,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:52:53,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:52:53,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:52:53,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:53,567 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-10-25 21:52:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:53,594 INFO L93 Difference]: Finished difference Result 96 states and 157 transitions. [2020-10-25 21:52:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:52:53,596 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-25 21:52:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:53,609 INFO L225 Difference]: With dead ends: 96 [2020-10-25 21:52:53,609 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 21:52:53,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 21:52:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-25 21:52:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 21:52:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-10-25 21:52:53,659 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 12 [2020-10-25 21:52:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:53,659 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-10-25 21:52:53,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:52:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-10-25 21:52:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:52:53,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:53,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:53,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:52:53,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:53,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1009660131, now seen corresponding path program 1 times [2020-10-25 21:52:53,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:52:53,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785097027] [2020-10-25 21:52:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 21:52:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 21:52:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:52:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:54,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:52:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:54,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785097027] [2020-10-25 21:52:54,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:54,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-25 21:52:54,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70982876] [2020-10-25 21:52:54,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:52:54,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:52:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:52:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:52:54,106 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 3 states. [2020-10-25 21:52:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:54,141 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-10-25 21:52:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:52:54,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 21:52:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:54,143 INFO L225 Difference]: With dead ends: 83 [2020-10-25 21:52:54,144 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 21:52:54,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:52:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 21:52:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-25 21:52:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 21:52:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-10-25 21:52:54,153 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 13 [2020-10-25 21:52:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:54,154 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-10-25 21:52:54,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:52:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-10-25 21:52:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 21:52:54,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:54,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:54,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:52:54,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:54,373 INFO L82 PathProgramCache]: Analyzing trace with hash 34829304, now seen corresponding path program 1 times [2020-10-25 21:52:54,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:52:54,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243001446] [2020-10-25 21:52:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-25 21:52:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:54,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 21:52:54,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:52:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:54,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:52:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:55,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243001446] [2020-10-25 21:52:55,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:55,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-25 21:52:55,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778620939] [2020-10-25 21:52:55,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 21:52:55,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:52:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 21:52:55,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:52:55,244 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 10 states. [2020-10-25 21:53:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:01,418 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-10-25 21:53:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 21:53:01,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-25 21:53:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:01,455 INFO L225 Difference]: With dead ends: 50 [2020-10-25 21:53:01,455 INFO L226 Difference]: Without dead ends: 19 [2020-10-25 21:53:01,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-25 21:53:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-25 21:53:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-25 21:53:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-25 21:53:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-25 21:53:01,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-25 21:53:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:01,463 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-25 21:53:01,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 21:53:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-25 21:53:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 21:53:01,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:01,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:01,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:53:01,666 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash -675358345, now seen corresponding path program 1 times [2020-10-25 21:53:01,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:01,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696475017] [2020-10-25 21:53:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-25 21:53:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:02,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:04,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:04,214 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:53:04,215 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:04,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 21:53:04,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:04 BoogieIcfgContainer [2020-10-25 21:53:04,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:04,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:04,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:04,506 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:04,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:53" (3/4) ... [2020-10-25 21:53:04,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:04,648 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:04,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:04,655 INFO L168 Benchmark]: Toolchain (without parser) took 43861.70 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.4 MB in the beginning and 35.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,656 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 29.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:04,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.61 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 26.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.44 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 24.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,661 INFO L168 Benchmark]: Boogie Preprocessor took 71.93 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 21.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,662 INFO L168 Benchmark]: RCFGBuilder took 31634.68 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 36.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,663 INFO L168 Benchmark]: TraceAbstraction took 11444.80 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 23.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,666 INFO L168 Benchmark]: Witness Printer took 143.87 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 35.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:04,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 29.1 MB in the beginning and 29.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.61 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 26.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.44 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 24.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.93 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 21.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 31634.68 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 36.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11444.80 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 23.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 143.87 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 35.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L182] double x = __VERIFIER_nondet_double(); [L184] x < 0 && isfinite_double(x) [L166] __int32_t hx; VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L184] x < 0 && isfinite_double(x) VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L184] COND TRUE x < 0 && isfinite_double(x) [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L133] COND TRUE hx < 0x00100000 VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L134] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L135] return -two54_log10 / zero_log10; VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L186] double res = __ieee754_log10(x); [L163] return x != x; VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] [L189] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0970a.c", 3, "reach_error") VAL [ivln10_log10=0.4342944819032518, Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, log10_2hi_log10=0.30102999566361177, log10_2lo_log10=0.0000000000003694239077158931, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0.0, zero_log10=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 74 SDslu, 80 SDs, 0 SdLazy, 24 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 17 QuantifiedInterpolants, 4426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...