./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC --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 3f171dd4f575b92a9302785470b2bac89695cbf3 ..................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC --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 3f171dd4f575b92a9302785470b2bac89695cbf3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:31:32,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:31:32,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:31:32,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:31:32,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:31:32,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:31:32,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:31:32,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:31:32,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:31:32,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:31:32,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:31:32,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:31:32,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:31:32,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:31:32,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:31:32,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:31:32,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:31:32,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:31:32,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:31:32,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:31:32,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:31:32,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:31:32,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:31:32,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:31:32,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:31:32,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:31:32,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:31:32,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:31:32,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:31:32,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:31:32,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:31:32,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:31:32,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:31:32,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:31:32,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:31:32,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:31:32,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:31:32,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:31:32,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:31:32,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:31:32,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:31:32,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:31:32,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:31:32,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:31:32,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:31:32,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:31:32,631 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:31:32,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:31:32,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:31:32,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:31:32,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:31:32,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:31:32,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:31:32,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:31:32,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:31:32,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:31:32,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:31:32,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:31:32,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:31:32,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:31:32,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:31:32,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:31:32,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:32,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:31:32,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:31:32,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:31:32,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:31:32,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:31:32,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:31:32,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:31:32,644 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f171dd4f575b92a9302785470b2bac89695cbf3 [2021-10-11 00:31:32,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:31:32,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:31:32,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:31:32,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:31:32,964 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:31:32,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-11 00:31:33,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/dfb13eb3f/9c56b1979bb54098b898a79c4df51636/FLAGcac8e2b4c [2021-10-11 00:31:33,479 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:31:33,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-11 00:31:33,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/dfb13eb3f/9c56b1979bb54098b898a79c4df51636/FLAGcac8e2b4c [2021-10-11 00:31:33,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/dfb13eb3f/9c56b1979bb54098b898a79c4df51636 [2021-10-11 00:31:33,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:31:33,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:31:33,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:33,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:31:33,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:31:33,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:33" (1/1) ... [2021-10-11 00:31:33,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac410ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:33, skipping insertion in model container [2021-10-11 00:31:33,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:33" (1/1) ... [2021-10-11 00:31:33,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:31:33,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:31:34,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-11 00:31:34,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:34,145 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:31:34,177 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-11 00:31:34,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:34,195 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:31:34,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34 WrapperNode [2021-10-11 00:31:34,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:34,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:34,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:31:34,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:31:34,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:34,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:31:34,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:31:34,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:31:34,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... [2021-10-11 00:31:34,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:31:34,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:31:34,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:31:34,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:31:34,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:31:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:31:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:31:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 00:31:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 00:31:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:31:34,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:31:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:31:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-11 00:31:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:31:34,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:31:34,901 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 00:31:34,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:34 BoogieIcfgContainer [2021-10-11 00:31:34,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:31:34,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:31:34,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:31:34,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:31:34,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:31:33" (1/3) ... [2021-10-11 00:31:34,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179dac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:34, skipping insertion in model container [2021-10-11 00:31:34,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:34" (2/3) ... [2021-10-11 00:31:34,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179dac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:34, skipping insertion in model container [2021-10-11 00:31:34,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:34" (3/3) ... [2021-10-11 00:31:34,912 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-10-11 00:31:34,927 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:31:34,931 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:31:34,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:31:34,967 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:31:34,967 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:31:34,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:31:34,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:31:34,968 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:31:34,968 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:31:34,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:31:34,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:31:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-10-11 00:31:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:31:34,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:34,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:34,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:34,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2021-10-11 00:31:35,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:35,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391860114] [2021-10-11 00:31:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:35,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391860114] [2021-10-11 00:31:35,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:35,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:35,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553351812] [2021-10-11 00:31:35,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:31:35,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:35,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:31:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:35,208 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2021-10-11 00:31:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:35,226 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2021-10-11 00:31:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:31:35,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 00:31:35,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:35,243 INFO L225 Difference]: With dead ends: 72 [2021-10-11 00:31:35,244 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:31:35,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:31:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 00:31:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:31:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-10-11 00:31:35,296 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2021-10-11 00:31:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:35,297 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-11 00:31:35,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:31:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-11 00:31:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:31:35,298 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:35,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:35,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:31:35,299 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2021-10-11 00:31:35,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:35,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468582870] [2021-10-11 00:31:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:35,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:35,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:35,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:35,478 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:31:35,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:31:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:31:35 BoogieIcfgContainer [2021-10-11 00:31:35,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:31:35,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:31:35,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:31:35,533 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:31:35,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:34" (3/4) ... [2021-10-11 00:31:35,536 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:31:35,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:31:35,543 INFO L168 Benchmark]: Toolchain (without parser) took 1662.76 ms. Allocated memory is still 113.2 MB. Free memory was 79.6 MB in the beginning and 89.3 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:35,546 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 85.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:35,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.46 ms. Allocated memory is still 113.2 MB. Free memory was 79.6 MB in the beginning and 87.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:35,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.88 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 85.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:35,549 INFO L168 Benchmark]: Boogie Preprocessor took 36.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 83.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:35,550 INFO L168 Benchmark]: RCFGBuilder took 619.07 ms. Allocated memory is still 113.2 MB. Free memory was 83.7 MB in the beginning and 60.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:35,552 INFO L168 Benchmark]: TraceAbstraction took 626.91 ms. Allocated memory is still 113.2 MB. Free memory was 60.0 MB in the beginning and 89.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:35,553 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 89.3 MB in the end (delta: 580.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:35,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 85.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.46 ms. Allocated memory is still 113.2 MB. Free memory was 79.6 MB in the beginning and 87.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.88 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 85.7 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 83.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 619.07 ms. Allocated memory is still 113.2 MB. Free memory was 83.7 MB in the beginning and 60.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 626.91 ms. Allocated memory is still 113.2 MB. Free memory was 60.0 MB in the beginning and 89.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 89.3 MB in the end (delta: 580.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L118] float x = 0.0f / 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float res = __ieee754_expf(x); [L15] return x != x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L122] COND TRUE !isnan_float(res) [L123] reach_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:31:38,106 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-10-11 00:31:38,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:31:38,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:31:38,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:31:38,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:31:38,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:31:38,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:31:38,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:31:38,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:31:38,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:31:38,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:31:38,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:31:38,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:31:38,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:31:38,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:31:38,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:31:38,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:31:38,300 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:31:38,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:31:38,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:31:38,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:31:38,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:31:38,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:31:38,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:31:38,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:31:38,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:31:38,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:31:38,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:31:38,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:31:38,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:31:38,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:31:38,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:31:38,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:31:38,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:31:38,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:38,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:31:38,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:31:38,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:31:38,305 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:31:38,305 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:31:38,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:31:38,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:31:38,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:31:38,306 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f171dd4f575b92a9302785470b2bac89695cbf3 [2021-10-11 00:31:38,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:31:38,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:31:38,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:31:38,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:31:38,759 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:31:38,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-11 00:31:38,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/d41af0984/1d4ad5de6423443093a59dfa86b34252/FLAGcfa933a60 [2021-10-11 00:31:39,514 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:31:39,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-10-11 00:31:39,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/d41af0984/1d4ad5de6423443093a59dfa86b34252/FLAGcfa933a60 [2021-10-11 00:31:39,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/data/d41af0984/1d4ad5de6423443093a59dfa86b34252 [2021-10-11 00:31:39,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:31:39,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:31:39,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:39,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:31:39,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:31:39,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:39" (1/1) ... [2021-10-11 00:31:39,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdc0cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:39, skipping insertion in model container [2021-10-11 00:31:39,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:39" (1/1) ... [2021-10-11 00:31:39,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:31:39,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:31:40,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-11 00:31:40,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:40,130 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:31:40,172 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/sv-benchmarks/c/float-newlib/float_req_bl_0831.c[3205,3218] [2021-10-11 00:31:40,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:40,197 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:31:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40 WrapperNode [2021-10-11 00:31:40,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:40,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:40,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:31:40,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:31:40,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:40,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:31:40,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:31:40,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:31:40,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... [2021-10-11 00:31:40,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:31:40,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:31:40,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:31:40,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:31:40,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:31:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-11 00:31:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:31:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:31:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-11 00:31:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 00:31:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:31:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:31:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 00:31:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 00:31:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:31:50,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:31:50,654 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 00:31:50,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:50 BoogieIcfgContainer [2021-10-11 00:31:50,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:31:50,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:31:50,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:31:50,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:31:50,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:31:39" (1/3) ... [2021-10-11 00:31:50,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:50, skipping insertion in model container [2021-10-11 00:31:50,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:40" (2/3) ... [2021-10-11 00:31:50,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:50, skipping insertion in model container [2021-10-11 00:31:50,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:50" (3/3) ... [2021-10-11 00:31:50,666 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-10-11 00:31:50,682 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:31:50,686 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:31:50,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:31:50,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:31:50,729 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:31:50,729 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:31:50,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:31:50,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:31:50,729 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:31:50,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:31:50,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:31:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-10-11 00:31:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:31:50,751 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:50,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:50,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:50,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2021-10-11 00:31:50,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:31:50,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351562564] [2021-10-11 00:31:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 00:31:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:51,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:31:51,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:51,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:31:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351562564] [2021-10-11 00:31:51,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:51,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:51,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838946460] [2021-10-11 00:31:51,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:31:51,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:31:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:31:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:51,626 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2021-10-11 00:31:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:51,648 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2021-10-11 00:31:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:31:51,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 00:31:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:51,660 INFO L225 Difference]: With dead ends: 72 [2021-10-11 00:31:51,660 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:31:51,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:31:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 00:31:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:31:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-10-11 00:31:51,698 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2021-10-11 00:31:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:51,698 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-11 00:31:51,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:31:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-11 00:31:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:31:51,700 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:51,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:51,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:31:51,915 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2021-10-11 00:31:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:31:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209769169] [2021-10-11 00:31:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 00:31:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:52,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:52,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:52,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:31:52,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209769169] [2021-10-11 00:31:52,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:52,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:31:52,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81278117] [2021-10-11 00:31:52,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:31:52,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:31:52,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:31:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:31:52,859 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 7 states. [2021-10-11 00:32:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:06,312 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-10-11 00:32:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:06,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 00:32:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:06,314 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:32:06,314 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 00:32:06,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:32:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 00:32:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-10-11 00:32:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:32:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-10-11 00:32:06,323 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 10 [2021-10-11 00:32:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:06,324 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-10-11 00:32:06,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:32:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-10-11 00:32:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:32:06,325 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:06,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:06,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:32:06,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash 228797714, now seen corresponding path program 1 times [2021-10-11 00:32:06,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:32:06,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808808742] [2021-10-11 00:32:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 00:32:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:07,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:32:07,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:07,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:32:07,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808808742] [2021-10-11 00:32:07,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:07,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:32:07,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815295393] [2021-10-11 00:32:07,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:07,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:32:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:07,488 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 5 states. [2021-10-11 00:32:07,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:07,722 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-10-11 00:32:07,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:07,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:32:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:07,723 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:32:07,723 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:32:07,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:32:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:32:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:32:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:32:07,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 00:32:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:07,726 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:32:07,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:32:07,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:32:07,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 00:32:07,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:32:08,223 INFO L262 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-10-11 00:32:08,224 INFO L265 CegarLoopResult]: At program point L127(lines 113 128) the Hoare annotation is: true [2021-10-11 00:32:08,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:32:08,224 INFO L262 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-10-11 00:32:08,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:32:08,224 INFO L262 CegarLoopResult]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-10-11 00:32:08,224 INFO L262 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-10-11 00:32:08,225 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-10-11 00:32:08,225 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-10-11 00:32:08,225 INFO L262 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2021-10-11 00:32:08,225 INFO L262 CegarLoopResult]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-10-11 00:32:08,225 INFO L262 CegarLoopResult]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-10-11 00:32:08,226 INFO L262 CegarLoopResult]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-10-11 00:32:08,226 INFO L262 CegarLoopResult]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-10-11 00:32:08,226 INFO L262 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-10-11 00:32:08,226 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-11 00:32:08,226 INFO L262 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-11 00:32:08,227 INFO L262 CegarLoopResult]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-10-11 00:32:08,227 INFO L262 CegarLoopResult]: For program point L122(lines 122 125) no Hoare annotation was computed. [2021-10-11 00:32:08,227 INFO L258 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_expf_~x) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-11 00:32:08,227 INFO L262 CegarLoopResult]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-10-11 00:32:08,228 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:32:08,228 INFO L262 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2021-10-11 00:32:08,228 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-10-11 00:32:08,228 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2021-10-11 00:32:08,229 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-11 00:32:08,229 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-11 00:32:08,229 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:32:08,229 INFO L262 CegarLoopResult]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-11 00:32:08,230 INFO L262 CegarLoopResult]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-10-11 00:32:08,230 INFO L262 CegarLoopResult]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-10-11 00:32:08,230 INFO L262 CegarLoopResult]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-10-11 00:32:08,230 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-11 00:32:08,230 INFO L258 CegarLoopResult]: At program point L109(lines 38 111) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= currentRoundingMode roundNearestTiesToEven) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_expf_~x)) [2021-10-11 00:32:08,231 INFO L262 CegarLoopResult]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-10-11 00:32:08,231 INFO L258 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start___ieee754_expf_~x))) [2021-10-11 00:32:08,231 INFO L262 CegarLoopResult]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-10-11 00:32:08,242 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,243 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,243 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,244 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,249 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,249 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,249 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,250 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,251 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,252 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,252 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,252 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,253 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,253 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,253 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,254 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,255 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,255 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:32:08,256 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,256 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:32:08,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:32:08 BoogieIcfgContainer [2021-10-11 00:32:08,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:32:08,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:32:08,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:32:08,259 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:32:08,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:50" (3/4) ... [2021-10-11 00:32:08,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:32:08,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 00:32:08,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 00:32:08,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:32:08,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:32:08,310 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 00:32:08,311 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x [2021-10-11 00:32:08,312 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result [2021-10-11 00:32:08,362 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8da632a8-41bc-423b-a42f-6f910f97ed99/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:32:08,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:32:08,365 INFO L168 Benchmark]: Toolchain (without parser) took 28531.60 ms. Allocated memory was 75.5 MB in the beginning and 104.9 MB in the end (delta: 29.4 MB). Free memory was 58.9 MB in the beginning and 71.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,365 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:08,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.86 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 45.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.04 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,367 INFO L168 Benchmark]: Boogie Preprocessor took 72.32 ms. Allocated memory is still 75.5 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,368 INFO L168 Benchmark]: RCFGBuilder took 10327.53 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 37.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,368 INFO L168 Benchmark]: TraceAbstraction took 17600.02 ms. Allocated memory was 75.5 MB in the beginning and 104.9 MB in the end (delta: 29.4 MB). Free memory was 37.4 MB in the beginning and 77.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,369 INFO L168 Benchmark]: Witness Printer took 104.06 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 71.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:08,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.86 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 45.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.04 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 43.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.32 ms. Allocated memory is still 75.5 MB. Free memory was 43.9 MB in the beginning and 41.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10327.53 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 37.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17600.02 ms. Allocated memory was 75.5 MB in the beginning and 104.9 MB in the end (delta: 29.4 MB). Free memory was 37.4 MB in the beginning and 77.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 104.06 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 71.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2021-10-11 00:32:08,382 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,385 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && 1bv32 == \result - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant [2021-10-11 00:32:08,386 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,386 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,386 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,387 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,387 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,388 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,388 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,388 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 43]: Loop Invariant [2021-10-11 00:32:08,389 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,389 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:32:08,390 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 00:32:08,390 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 57 SDslu, 102 SDs, 0 SdLazy, 57 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 4 QuantifiedInterpolants, 1271 SizeOfPredicates, 14 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...