./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ............................................................................................................................................................................................................................................................................................................................ 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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:41:40,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:41:40,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:41:40,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:41:40,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:41:40,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:41:40,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:41:40,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:41:40,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:41:40,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:41:40,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:41:40,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:41:40,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:41:40,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:41:40,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:41:40,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:41:40,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:41:40,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:41:40,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:41:40,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:41:40,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:41:40,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:41:40,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:41:40,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:41:40,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:41:40,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:41:40,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:41:40,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:41:40,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:41:40,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:41:40,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:41:40,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:41:40,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:41:40,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:41:40,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:41:40,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:41:40,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:41:40,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:41:40,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:41:40,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:41:40,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:41:40,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:41:40,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:41:40,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:41:40,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:41:40,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:41:40,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:41:40,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:41:40,467 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:41:40,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:41:40,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:41:40,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:41:40,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:41:40,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:41:40,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:41:40,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:41:40,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:40,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:41:40,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:41:40,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:41:40,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:41:40,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:41:40,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-08-26 01:41:40,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:41:40,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:41:40,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:41:40,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:41:40,727 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:41:40,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-26 01:41:40,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599e05c2c/bbcfe4c72d2349ec916102343df93e61/FLAG969890e76 [2021-08-26 01:41:41,226 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:41:41,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-26 01:41:41,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599e05c2c/bbcfe4c72d2349ec916102343df93e61/FLAG969890e76 [2021-08-26 01:41:41,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599e05c2c/bbcfe4c72d2349ec916102343df93e61 [2021-08-26 01:41:41,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:41:41,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:41:41,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:41,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:41:41,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:41:41,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780a2bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41, skipping insertion in model container [2021-08-26 01:41:41,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:41:41,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:41:41,783 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-08-26 01:41:41,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:41,809 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:41:41,842 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-08-26 01:41:41,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:41,856 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:41:41,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41 WrapperNode [2021-08-26 01:41:41,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:41,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:41,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:41:41,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:41:41,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:41,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:41:41,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:41:41,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:41:41,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:41:41,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:41:41,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:41:41,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:41:41,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (1/1) ... [2021-08-26 01:41:41,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:41:41,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:41:41,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:41:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:41:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:41:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:41:41,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-26 01:41:41,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:41:42,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:41:42,497 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-26 01:41:42,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:42 BoogieIcfgContainer [2021-08-26 01:41:42,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:41:42,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:41:42,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:41:42,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:41:42,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:41:41" (1/3) ... [2021-08-26 01:41:42,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abf38a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:42, skipping insertion in model container [2021-08-26 01:41:42,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:41" (2/3) ... [2021-08-26 01:41:42,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abf38a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:42, skipping insertion in model container [2021-08-26 01:41:42,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:42" (3/3) ... [2021-08-26 01:41:42,506 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-08-26 01:41:42,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:41:42,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:41:42,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:41:42,562 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:41:42,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:41:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.793103448275862) internal successors, (104), 59 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 01:41:42,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:42,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:42,589 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2021-08-26 01:41:42,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:42,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443380184] [2021-08-26 01:41:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:42,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:42,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:42,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443380184] [2021-08-26 01:41:42,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443380184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:42,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:42,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:41:42,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813208220] [2021-08-26 01:41:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:41:42,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:41:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:42,739 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.793103448275862) internal successors, (104), 59 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:42,781 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2021-08-26 01:41:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:41:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 01:41:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:42,788 INFO L225 Difference]: With dead ends: 118 [2021-08-26 01:41:42,788 INFO L226 Difference]: Without dead ends: 56 [2021-08-26 01:41:42,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-26 01:41:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-26 01:41:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2021-08-26 01:41:42,813 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2021-08-26 01:41:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2021-08-26 01:41:42,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2021-08-26 01:41:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 01:41:42,815 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:42,815 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:42,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:41:42,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2021-08-26 01:41:42,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:42,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741501934] [2021-08-26 01:41:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:42,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:41:42,866 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:41:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:41:42,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:41:42,921 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:41:42,922 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:41:42,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:41:42,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:41:42,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:41:42 BoogieIcfgContainer [2021-08-26 01:41:42,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:41:42,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:41:42,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:41:42,949 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:41:42,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:42" (3/4) ... [2021-08-26 01:41:42,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:41:42,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:41:42,953 INFO L168 Benchmark]: Toolchain (without parser) took 1343.40 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 60.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,954 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 56.0 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:41:42,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.30 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 54.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 52.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,955 INFO L168 Benchmark]: Boogie Preprocessor took 23.56 ms. Allocated memory is still 73.4 MB. Free memory was 52.0 MB in the beginning and 50.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,956 INFO L168 Benchmark]: RCFGBuilder took 575.29 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 50.0 MB in the beginning and 63.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,956 INFO L168 Benchmark]: TraceAbstraction took 447.07 ms. Allocated memory is still 98.6 MB. Free memory was 63.1 MB in the beginning and 61.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 540.9 kB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,956 INFO L168 Benchmark]: Witness Printer took 3.32 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 60.8 MB in the end (delta: 561.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:42,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 56.0 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.30 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 54.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 52.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.56 ms. Allocated memory is still 73.4 MB. Free memory was 52.0 MB in the beginning and 50.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 575.29 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 50.0 MB in the beginning and 63.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 447.07 ms. Allocated memory is still 98.6 MB. Free memory was 63.1 MB in the beginning and 61.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 540.9 kB. Max. memory is 16.1 GB. * Witness Printer took 3.32 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 60.8 MB in the end (delta: 561.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={6:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={6:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={6:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={6:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={6:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={6:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={6:0}] [L188] reach_error() VAL [one_fmod=1, Zero_fmod={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 371.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.2ms, AutomataDifference: 62.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 64.7ms SatisfiabilityAnalysisTime, 43.3ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 01:41:42,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:41:44,502 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 01:41:44,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:41:44,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:41:44,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:41:44,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:41:44,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:41:44,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:41:44,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:41:44,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:41:44,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:41:44,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:41:44,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:41:44,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:41:44,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:41:44,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:41:44,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:41:44,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:41:44,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:41:44,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:41:44,603 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:41:44,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:41:44,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:41:44,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:41:44,605 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:41:44,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:41:44,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:41:44,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:44,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:41:44,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:41:44,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:41:44,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:41:44,607 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:41:44,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:41:44,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:41:44,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:41:44,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-08-26 01:41:44,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:41:44,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:41:44,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:41:44,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:41:44,920 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:41:44,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-26 01:41:44,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e01d454e/6de5fb060d9340c789f0126b810b4982/FLAG98ff3e747 [2021-08-26 01:41:45,396 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:41:45,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-26 01:41:45,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e01d454e/6de5fb060d9340c789f0126b810b4982/FLAG98ff3e747 [2021-08-26 01:41:45,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e01d454e/6de5fb060d9340c789f0126b810b4982 [2021-08-26 01:41:45,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:41:45,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:41:45,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:45,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:41:45,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:41:45,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b061244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45, skipping insertion in model container [2021-08-26 01:41:45,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:41:45,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:41:45,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-08-26 01:41:45,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:45,606 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:41:45,636 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-08-26 01:41:45,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:45,651 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:41:45,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45 WrapperNode [2021-08-26 01:41:45,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:45,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:45,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:41:45,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:41:45,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:45,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:41:45,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:41:45,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:41:45,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:41:45,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:41:45,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:41:45,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:41:45,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (1/1) ... [2021-08-26 01:41:45,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:41:45,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:41:45,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:41:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-08-26 01:41:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:41:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:41:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:41:49,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:41:49,531 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-26 01:41:49,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:49 BoogieIcfgContainer [2021-08-26 01:41:49,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:41:49,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:41:49,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:41:49,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:41:49,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:41:45" (1/3) ... [2021-08-26 01:41:49,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a93cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:49, skipping insertion in model container [2021-08-26 01:41:49,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:45" (2/3) ... [2021-08-26 01:41:49,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a93cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:49, skipping insertion in model container [2021-08-26 01:41:49,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:49" (3/3) ... [2021-08-26 01:41:49,537 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-08-26 01:41:49,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:41:49,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:41:49,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:41:49,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:41:49,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:41:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.793103448275862) internal successors, (104), 59 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 01:41:49,600 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:49,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:49,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:49,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2021-08-26 01:41:49,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:41:49,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965373753] [2021-08-26 01:41:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:49,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:41:49,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:41:49,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:41:49,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:41:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:41:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:41:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:50,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:41:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:50,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:41:50,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965373753] [2021-08-26 01:41:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965373753] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:50,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:41:50,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838687921] [2021-08-26 01:41:50,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:41:50,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:41:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:41:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:50,751 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.793103448275862) internal successors, (104), 59 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:50,765 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2021-08-26 01:41:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:41:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 01:41:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:50,772 INFO L225 Difference]: With dead ends: 118 [2021-08-26 01:41:50,773 INFO L226 Difference]: Without dead ends: 56 [2021-08-26 01:41:50,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-26 01:41:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-26 01:41:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2021-08-26 01:41:50,795 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2021-08-26 01:41:50,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:50,800 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2021-08-26 01:41:50,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2021-08-26 01:41:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 01:41:50,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:50,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:50,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:41:51,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:41:51,019 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:51,020 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2021-08-26 01:41:51,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:41:51,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837612151] [2021-08-26 01:41:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:51,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:41:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:41:51,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:41:51,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:41:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:52,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 01:41:52,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:41:52,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:41:55,463 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-26 01:41:55,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 71 [2021-08-26 01:41:57,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:41:57,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 113 [2021-08-26 01:41:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-08-26 01:41:57,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-08-26 01:42:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:03,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:15,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:15,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837612151] [2021-08-26 01:42:15,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:42:15,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [799597344] [2021-08-26 01:42:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:15,867 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-26 01:42:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-26 01:42:15,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-26 01:42:15,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-08-26 01:42:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 01:42:16,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:18,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:42:20,060 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-26 01:42:20,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 71 [2021-08-26 01:42:21,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:42:21,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 113 [2021-08-26 01:42:22,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-08-26 01:42:22,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-08-26 01:42:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:23,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:32,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:42:32,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117004514] [2021-08-26 01:42:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:32,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:42:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:42:32,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 01:42:32,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 01:42:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:34,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 01:42:34,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:34,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-08-26 01:42:36,492 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-26 01:42:36,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 71 [2021-08-26 01:42:38,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 01:42:38,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 113 [2021-08-26 01:42:38,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-08-26 01:42:38,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-08-26 01:42:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:39,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:48,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:42:48,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:48,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-26 01:42:48,945 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-26 01:42:48,945 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-26 01:42:48,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:42:48,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:42:49,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-26 01:42:49,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-08-26 01:42:49,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-26 01:42:49,554 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:42:49,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:42:49 BoogieIcfgContainer [2021-08-26 01:42:49,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:42:49,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:42:49,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:42:49,565 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:42:49,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:49" (3/4) ... [2021-08-26 01:42:49,568 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:42:49,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:42:49,569 INFO L168 Benchmark]: Toolchain (without parser) took 64148.68 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 35.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,569 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:42:49,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.00 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 34.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 31.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,570 INFO L168 Benchmark]: Boogie Preprocessor took 33.34 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 29.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,571 INFO L168 Benchmark]: RCFGBuilder took 3814.01 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 29.7 MB in the beginning and 46.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,571 INFO L168 Benchmark]: TraceAbstraction took 60031.12 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 35.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:49,571 INFO L168 Benchmark]: Witness Printer took 2.92 ms. Allocated memory is still 69.2 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:42:49,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.00 ms. Allocated memory is still 54.5 MB. Free memory was 32.2 MB in the beginning and 34.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 31.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.34 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 29.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3814.01 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 29.7 MB in the beginning and 46.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 60031.12 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 35.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.92 ms. Allocated memory is still 69.2 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x [L188] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59976.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 34.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.1ms SsaConstructionTime, 656.9ms SatisfiabilityAnalysisTime, 393.9ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 01:42:49,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...