./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 5fbdf5bf 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:23:53,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:23:53,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:23:53,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:23:53,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:23:53,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:23:53,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:23:53,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:23:53,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:23:53,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:23:53,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:23:53,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:23:53,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:23:53,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:23:53,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:23:53,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:23:53,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:23:53,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:23:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:23:53,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:23:53,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:23:53,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:23:53,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:23:53,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:23:53,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:23:53,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:23:53,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:23:53,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:23:53,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:23:53,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:23:53,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:23:53,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:23:53,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:23:53,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:23:53,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:23:53,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:23:53,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:23:53,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:23:53,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:23:53,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:23:53,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:23:53,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:23:53,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:23:53,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:23:53,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:23:53,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:23:53,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:23:53,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:23:53,773 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:23:53,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:23:53,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:23:53,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:23:53,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:23:53,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:23:53,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:23:53,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:23:53,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:23:53,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:23:53,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:23:53,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:23:53,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:23:53,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:23:53,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:23:53,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:23:53,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:23:53,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:23:53,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:23:53,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-08-29 08:23:54,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:23:54,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:23:54,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:23:54,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:23:54,098 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:23:54,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-29 08:23:54,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe8b88e6/5570a7e6a8d84b459cce7b12d789d1a5/FLAGdefa20c71 [2021-08-29 08:23:54,643 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:23:54,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-29 08:23:54,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe8b88e6/5570a7e6a8d84b459cce7b12d789d1a5/FLAGdefa20c71 [2021-08-29 08:23:55,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe8b88e6/5570a7e6a8d84b459cce7b12d789d1a5 [2021-08-29 08:23:55,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:23:55,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:23:55,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:23:55,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:23:55,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:23:55,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54acc4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55, skipping insertion in model container [2021-08-29 08:23:55,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:23:55,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:23:55,241 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] [2021-08-29 08:23:55,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:23:55,269 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:23:55,324 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] [2021-08-29 08:23:55,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:23:55,338 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:23:55,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55 WrapperNode [2021-08-29 08:23:55,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:23:55,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:23:55,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:23:55,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:23:55,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:23:55,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:23:55,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:23:55,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:23:55,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:23:55,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:23:55,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:23:55,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:23:55,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (1/1) ... [2021-08-29 08:23:55,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:23:55,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:23:55,494 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) [2021-08-29 08:23:55,516 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 [2021-08-29 08:23:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:23:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:23:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 08:23:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-29 08:23:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-29 08:23:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:23:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:23:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 08:23:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-29 08:23:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:23:55,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:23:55,832 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-29 08:23:55,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:55 BoogieIcfgContainer [2021-08-29 08:23:55,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:23:55,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:23:55,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:23:55,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:23:55,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:23:55" (1/3) ... [2021-08-29 08:23:55,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3439a596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:23:55, skipping insertion in model container [2021-08-29 08:23:55,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:23:55" (2/3) ... [2021-08-29 08:23:55,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3439a596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:23:55, skipping insertion in model container [2021-08-29 08:23:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:55" (3/3) ... [2021-08-29 08:23:55,841 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-08-29 08:23:55,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:23:55,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:23:55,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:23:55,890 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 [2021-08-29 08:23:55,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:23:55,937 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) [2021-08-29 08:23:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 08:23:55,952 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:55,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:55,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2021-08-29 08:23:55,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:23:55,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232436156] [2021-08-29 08:23:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:55,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:23:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:23:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:23:56,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:23:56,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232436156] [2021-08-29 08:23:56,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232436156] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:23:56,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:23:56,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:23:56,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412882143] [2021-08-29 08:23:56,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:23:56,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:23:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:23:56,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:56,295 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) [2021-08-29 08:23:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:23:56,518 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2021-08-29 08:23:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:23:56,555 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 [2021-08-29 08:23:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:23:56,563 INFO L225 Difference]: With dead ends: 118 [2021-08-29 08:23:56,566 INFO L226 Difference]: Without dead ends: 56 [2021-08-29 08:23:56,570 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:23:56,589 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 186.92ms IncrementalHoareTripleChecker+Time [2021-08-29 08:23:56,591 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 186.92ms Time] [2021-08-29 08:23:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-29 08:23:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-29 08:23:56,666 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) [2021-08-29 08:23:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2021-08-29 08:23:56,671 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2021-08-29 08:23:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:23:56,671 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2021-08-29 08:23:56,672 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) [2021-08-29 08:23:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2021-08-29 08:23:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 08:23:56,673 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:23:56,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:23:56,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:23:56,674 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:23:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:23:56,677 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2021-08-29 08:23:56,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:23:56,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613112845] [2021-08-29 08:23:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:23:56,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:23:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:23:56,824 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:23:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:23:56,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:23:56,959 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:23:56,962 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:23:56,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:23:56,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:23:57,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:23:57 BoogieIcfgContainer [2021-08-29 08:23:57,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:23:57,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:23:57,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:23:57,025 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:23:57,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:23:55" (3/4) ... [2021-08-29 08:23:57,028 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:23:57,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:23:57,030 INFO L158 Benchmark]: Toolchain (without parser) took 1992.58ms. Allocated memory was 50.3MB in the beginning and 83.9MB in the end (delta: 33.6MB). Free memory was 27.1MB in the beginning and 59.4MB in the end (delta: -32.3MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,030 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:57,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.01ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 26.9MB in the beginning and 44.1MB in the end (delta: -17.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.73ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 41.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,032 INFO L158 Benchmark]: Boogie Preprocessor took 76.69ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 39.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,032 INFO L158 Benchmark]: RCFGBuilder took 370.32ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 41.1MB in the end (delta: -1.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,033 INFO L158 Benchmark]: TraceAbstraction took 1189.00ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 40.5MB in the beginning and 59.8MB in the end (delta: -19.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-08-29 08:23:57,034 INFO L158 Benchmark]: Witness Printer took 4.13ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 59.4MB in the end (delta: 463.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:23:57,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 32.6MB in the beginning and 32.6MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.01ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 26.9MB in the beginning and 44.1MB in the end (delta: -17.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.73ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 41.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.69ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 39.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.32ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 41.1MB in the end (delta: -1.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1189.00ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 40.5MB in the beginning and 59.8MB in the end (delta: -19.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Witness Printer took 4.13ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 59.4MB in the end (delta: 463.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 1092.20ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 29.63ms, AutomataDifference: 347.53ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 18.64ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 186.92ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 145.37ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 87 mSolverCounterSat, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 66.76ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.10ms SsaConstructionTime, 150.93ms SatisfiabilityAnalysisTime, 83.29ms 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 [2021-08-29 08:23:57,086 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:23:59,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:23:59,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:23:59,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:23:59,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:23:59,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:23:59,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:23:59,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:23:59,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:23:59,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:23:59,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:23:59,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:23:59,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:23:59,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:23:59,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:23:59,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:23:59,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:23:59,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:23:59,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:23:59,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:23:59,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:23:59,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:23:59,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:23:59,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:23:59,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:23:59,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:23:59,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:23:59,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:23:59,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:23:59,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:23:59,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:23:59,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:23:59,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:23:59,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:23:59,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:23:59,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:23:59,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:23:59,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:23:59,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:23:59,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:23:59,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:23:59,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:23:59,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:23:59,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:23:59,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:23:59,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:23:59,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:23:59,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:23:59,811 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:23:59,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:23:59,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:23:59,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:23:59,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:23:59,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:23:59,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:23:59,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:23:59,813 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:23:59,814 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:23:59,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:23:59,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:23:59,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:23:59,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:23:59,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:23:59,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:23:59,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:23:59,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:23:59,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:23:59,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:23:59,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:23:59,816 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:23:59,816 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:23:59,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:23:59,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:23:59,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:23:59,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-08-29 08:24:00,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:24:00,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:24:00,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:24:00,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:24:00,361 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:24:00,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-29 08:24:00,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49ebcde9/c1f31a6ecab14b849b13b74225f83f67/FLAG79a0a8117 [2021-08-29 08:24:01,188 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:24:01,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-08-29 08:24:01,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49ebcde9/c1f31a6ecab14b849b13b74225f83f67/FLAG79a0a8117 [2021-08-29 08:24:01,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49ebcde9/c1f31a6ecab14b849b13b74225f83f67 [2021-08-29 08:24:01,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:24:01,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:24:01,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:24:01,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:24:01,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:24:01,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41471941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01, skipping insertion in model container [2021-08-29 08:24:01,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:24:01,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:24:01,440 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] [2021-08-29 08:24:01,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:24:01,453 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:24:01,489 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] [2021-08-29 08:24:01,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:24:01,511 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:24:01,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01 WrapperNode [2021-08-29 08:24:01,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:24:01,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:24:01,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:24:01,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:24:01,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:24:01,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:24:01,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:24:01,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:24:01,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:24:01,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:24:01,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:24:01,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:24:01,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (1/1) ... [2021-08-29 08:24:01,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:24:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:24:01,681 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) [2021-08-29 08:24:01,689 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 [2021-08-29 08:24:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-08-29 08:24:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:24:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:24:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 08:24:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:24:01,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:24:01,948 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-29 08:24:01,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:24:01 BoogieIcfgContainer [2021-08-29 08:24:01,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:24:01,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:24:01,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:24:01,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:24:01,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:24:01" (1/3) ... [2021-08-29 08:24:01,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eca3f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:24:01, skipping insertion in model container [2021-08-29 08:24:01,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:24:01" (2/3) ... [2021-08-29 08:24:01,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eca3f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:24:01, skipping insertion in model container [2021-08-29 08:24:01,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:24:01" (3/3) ... [2021-08-29 08:24:01,969 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-08-29 08:24:01,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:24:01,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:24:02,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:24:02,024 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 [2021-08-29 08:24:02,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:24:02,039 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) [2021-08-29 08:24:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 08:24:02,043 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:24:02,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:24:02,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:24:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:24:02,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2021-08-29 08:24:02,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:24:02,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512402264] [2021-08-29 08:24:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:24:02,060 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:24:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:24:02,062 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) [2021-08-29 08:24:02,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:24:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:24:02,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:24:02,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:24:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:24:03,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:24:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:24:03,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:24:03,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512402264] [2021-08-29 08:24:03,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512402264] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:24:03,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:24:03,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:24:03,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180083947] [2021-08-29 08:24:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:24:03,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:24:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:24:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:24:03,173 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) [2021-08-29 08:24:06,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:24:09,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 08:24:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:24:09,923 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2021-08-29 08:24:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:24:09,957 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 [2021-08-29 08:24:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:24:09,963 INFO L225 Difference]: With dead ends: 118 [2021-08-29 08:24:09,964 INFO L226 Difference]: Without dead ends: 56 [2021-08-29 08:24:09,966 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.17ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:24:09,969 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6268.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6717.19ms IncrementalHoareTripleChecker+Time [2021-08-29 08:24:09,970 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 2 Unknown, 0 Unchecked, 6717.19ms Time] [2021-08-29 08:24:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-29 08:24:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-29 08:24:09,994 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) [2021-08-29 08:24:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2021-08-29 08:24:09,996 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2021-08-29 08:24:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:24:09,996 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2021-08-29 08:24:09,997 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) [2021-08-29 08:24:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2021-08-29 08:24:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 08:24:09,997 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:24:09,997 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:24:10,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-29 08:24:10,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:24:10,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:24:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:24:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2021-08-29 08:24:10,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:24:10,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863642459] [2021-08-29 08:24:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:24:10,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:24:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:24:10,205 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) [2021-08-29 08:24:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:24:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:24:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-29 08:24:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:24:11,737 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 [2021-08-29 08:24:14,912 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-29 08:24:14,913 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 [2021-08-29 08:24:16,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 08:24:16,782 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 [2021-08-29 08:24:16,997 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 [2021-08-29 08:24:17,130 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 [2021-08-29 08:24:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:24:22,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:24:35,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:24:35,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863642459] [2021-08-29 08:24:35,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-29 08:24:35,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1799606526] [2021-08-29 08:24:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:24:35,470 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-29 08:24:35,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-29 08:24:35,486 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) [2021-08-29 08:24:35,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-08-29 08:24:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:24:36,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-29 08:24:36,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:24:36,664 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 [2021-08-29 08:24:39,233 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-29 08:24:39,234 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 [2021-08-29 08:24:40,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 08:24:40,873 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 [2021-08-29 08:24:41,360 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 [2021-08-29 08:24:41,434 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 [2021-08-29 08:24:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:24:42,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:24:52,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-29 08:24:52,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448165993] [2021-08-29 08:24:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:24:52,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 08:24:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:24:53,007 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) [2021-08-29 08:24:53,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 08:24:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:24:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-29 08:24:54,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:24:54,821 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 [2021-08-29 08:24:57,107 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-08-29 08:24:57,108 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 [2021-08-29 08:24:58,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 08:24:58,780 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 [2021-08-29 08:24:59,244 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 [2021-08-29 08:24:59,426 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 [2021-08-29 08:25:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:00,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:11,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-29 08:25:11,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:11,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-29 08:25:11,198 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-29 08:25:11,199 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-29 08:25:11,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:25:11,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:11,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-29 08:25:11,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-08-29 08:25:11,820 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 [2021-08-29 08:25:11,825 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:25:11,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:25:11 BoogieIcfgContainer [2021-08-29 08:25:11,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:25:11,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:25:11,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:25:11,849 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:25:11,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:24:01" (3/4) ... [2021-08-29 08:25:11,852 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:25:11,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:25:11,859 INFO L158 Benchmark]: Toolchain (without parser) took 70639.00ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 41.3MB in the beginning and 24.2MB in the end (delta: 17.1MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,860 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:11,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.13ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 39.4MB in the end (delta: 1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.71ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 37.1MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,861 INFO L158 Benchmark]: Boogie Preprocessor took 51.57ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 34.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,862 INFO L158 Benchmark]: RCFGBuilder took 319.02ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 34.9MB in the beginning and 52.4MB in the end (delta: -17.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,862 INFO L158 Benchmark]: TraceAbstraction took 69884.88ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 24.2MB in the end (delta: 28.0MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2021-08-29 08:25:11,862 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 79.7MB. Free memory is still 24.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:11,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.13ms. Allocated memory is still 60.8MB. Free memory was 41.1MB in the beginning and 39.4MB in the end (delta: 1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.71ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 37.1MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.57ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 34.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.02ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 34.9MB in the beginning and 52.4MB in the end (delta: -17.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * TraceAbstraction took 69884.88ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 24.2MB in the end (delta: 28.0MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 79.7MB. Free memory is still 24.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 69808.17ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.52ms, AutomataDifference: 6820.46ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.17ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 6717.19ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6268.83ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 85 mSolverCounterSat, 1.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.17ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 15.38ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.68ms SsaConstructionTime, 794.33ms SatisfiabilityAnalysisTime, 204.65ms 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 [2021-08-29 08:25:12,117 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-29 08:25:12,121 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...