./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa --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 b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:15:40,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:15:40,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:15:40,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:15:40,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:15:40,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:15:40,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:15:40,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:15:40,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:15:40,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:15:40,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:15:40,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:15:40,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:15:40,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:15:40,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:15:40,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:15:40,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:15:40,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:15:40,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:15:40,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:15:40,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:15:40,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:15:40,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:15:40,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:15:40,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:15:40,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:15:40,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:15:40,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:15:40,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:15:40,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:15:40,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:15:40,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:15:40,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:15:40,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:15:40,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:15:40,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:15:40,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:15:40,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:15:40,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:15:40,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:15:40,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:15:40,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:15:40,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:15:40,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:15:40,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:15:40,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:15:40,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:15:40,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:15:40,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:15:40,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:15:40,302 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:15:40,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:15:40,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:15:40,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:15:40,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:15:40,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:15:40,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:15:40,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:40,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:15:40,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:15:40,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:15:40,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:15:40,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:15:40,305 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b [2021-12-06 17:15:40,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:15:40,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:15:40,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:15:40,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:15:40,506 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:15:40,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-12-06 17:15:40,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/750880880/7b2ed5a9399d4d728bd43a191fbf3d11/FLAG8b93bbf23 [2021-12-06 17:15:40,902 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:15:40,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-12-06 17:15:40,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/750880880/7b2ed5a9399d4d728bd43a191fbf3d11/FLAG8b93bbf23 [2021-12-06 17:15:40,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/750880880/7b2ed5a9399d4d728bd43a191fbf3d11 [2021-12-06 17:15:40,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:15:40,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:15:40,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:40,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:15:40,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:15:40,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:40" (1/1) ... [2021-12-06 17:15:40,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e3130a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:40, skipping insertion in model container [2021-12-06 17:15:40,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:40" (1/1) ... [2021-12-06 17:15:40,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:15:40,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:15:41,062 WARN L230 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-12-06 17:15:41,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:41,070 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:15:41,083 WARN L230 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-12-06 17:15:41,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:41,093 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:15:41,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41 WrapperNode [2021-12-06 17:15:41,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:41,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:41,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:15:41,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:15:41,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,118 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-12-06 17:15:41,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:41,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:15:41,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:15:41,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:15:41,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:15:41,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:15:41,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:15:41,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:15:41,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (1/1) ... [2021-12-06 17:15:41,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:41,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:15:41,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:15:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:15:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:15:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:15:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:15:41,242 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:15:41,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:15:41,310 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:15:41,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:15:41,314 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 17:15:41,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:41 BoogieIcfgContainer [2021-12-06 17:15:41,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:15:41,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:15:41,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:15:41,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:15:41,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:15:40" (1/3) ... [2021-12-06 17:15:41,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b859edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:41, skipping insertion in model container [2021-12-06 17:15:41,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:41" (2/3) ... [2021-12-06 17:15:41,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b859edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:41, skipping insertion in model container [2021-12-06 17:15:41,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:41" (3/3) ... [2021-12-06 17:15:41,321 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-12-06 17:15:41,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:15:41,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:15:41,359 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:15:41,365 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:15:41,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:15:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:41,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:15:41,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:41,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:41,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2021-12-06 17:15:41,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:41,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139379868] [2021-12-06 17:15:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:41,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:41,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139379868] [2021-12-06 17:15:41,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139379868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:41,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:41,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:41,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266262054] [2021-12-06 17:15:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:41,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:15:41,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:15:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:15:41,532 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:41,542 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-12-06 17:15:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:15:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:15:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:41,549 INFO L225 Difference]: With dead ends: 28 [2021-12-06 17:15:41,549 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 17:15:41,551 INFO L932 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 [2021-12-06 17:15:41,554 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:41,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:15:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 17:15:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 17:15:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-06 17:15:41,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2021-12-06 17:15:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:41,578 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-06 17:15:41,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-06 17:15:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 17:15:41,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:41,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:41,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:15:41,579 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2021-12-06 17:15:41,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:41,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083201601] [2021-12-06 17:15:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:41,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:15:41,613 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:15:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:15:41,647 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:15:41,648 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:15:41,649 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:15:41,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:15:41,654 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:15:41,656 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:15:41,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:15:41 BoogieIcfgContainer [2021-12-06 17:15:41,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:15:41,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:15:41,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:15:41,674 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:15:41,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:41" (3/4) ... [2021-12-06 17:15:41,677 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 17:15:41,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:15:41,678 INFO L158 Benchmark]: Toolchain (without parser) took 757.68ms. Allocated memory is still 104.9MB. Free memory was 62.9MB in the beginning and 41.2MB in the end (delta: 21.7MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,678 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:15:41,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.95ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 78.9MB in the end (delta: -16.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.80ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 77.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:15:41,679 INFO L158 Benchmark]: Boogie Preprocessor took 16.84ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,680 INFO L158 Benchmark]: RCFGBuilder took 179.56ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 66.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,680 INFO L158 Benchmark]: TraceAbstraction took 357.05ms. Allocated memory is still 104.9MB. Free memory was 66.0MB in the beginning and 42.0MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,680 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 104.9MB. Free memory was 41.6MB in the beginning and 41.2MB in the end (delta: 424.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:15:41,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.95ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 78.9MB in the end (delta: -16.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.80ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 77.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.84ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 179.56ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 66.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 357.05ms. Allocated memory is still 104.9MB. Free memory was 66.0MB in the beginning and 42.0MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 104.9MB. Free memory was 41.6MB in the beginning and 41.2MB in the end (delta: 424.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L38] CALL, EXPR fabs_float(x) [L17] __uint32_t ix; VAL [\old(x)=50, x=50] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; VAL [\old(x)=50, \result=49, ix=51, x=49] [L38] RET, EXPR fabs_float(x) [L38] float res = fabs_float(x); [L41] CALL, EXPR isnan_float(res) [L14] return x != x; VAL [\old(x)=49, \result=0, x=49] [L41] RET, EXPR isnan_float(res) [L41] COND TRUE !isnan_float(res) [L42] reach_error() VAL [res=49, x=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 17:15:41,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa --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 b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:15:43,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:15:43,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:15:43,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:15:43,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:15:43,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:15:43,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:15:43,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:15:43,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:15:43,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:15:43,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:15:43,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:15:43,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:15:43,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:15:43,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:15:43,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:15:43,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:15:43,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:15:43,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:15:43,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:15:43,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:15:43,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:15:43,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:15:43,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:15:43,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:15:43,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:15:43,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:15:43,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:15:43,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:15:43,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:15:43,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:15:43,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:15:43,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:15:43,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:15:43,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:15:43,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:15:43,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:15:43,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:15:43,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:15:43,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:15:43,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:15:43,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 17:15:43,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:15:43,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:15:43,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:15:43,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:15:43,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:15:43,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:15:43,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:15:43,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:15:43,432 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:15:43,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:15:43,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:15:43,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:15:43,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:15:43,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:15:43,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:15:43,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:15:43,434 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:15:43,434 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:15:43,434 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:15:43,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:15:43,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:15:43,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:15:43,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:15:43,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:15:43,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:15:43,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:15:43,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:43,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:15:43,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:15:43,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:15:43,436 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:15:43,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:15:43,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:15:43,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:15:43,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:15:43,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:15:43,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:15:43,438 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b589368e94c5bf428f982c3f177e2b11fa3048a410e00e940a504ad7d373847b [2021-12-06 17:15:43,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:15:43,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:15:43,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:15:43,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:15:43,694 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:15:43,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-12-06 17:15:43,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/473b7214b/255fc4e964774f88a9c306f1df881924/FLAG02a64f0f8 [2021-12-06 17:15:44,107 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:15:44,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-12-06 17:15:44,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/473b7214b/255fc4e964774f88a9c306f1df881924/FLAG02a64f0f8 [2021-12-06 17:15:44,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/data/473b7214b/255fc4e964774f88a9c306f1df881924 [2021-12-06 17:15:44,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:15:44,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:15:44,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:44,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:15:44,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:15:44,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fb4864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44, skipping insertion in model container [2021-12-06 17:15:44,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:15:44,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:15:44,267 WARN L230 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-12-06 17:15:44,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:44,280 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:15:44,302 WARN L230 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_eead3364-7a54-4c3a-a2d3-1e2a65673122/sv-benchmarks/c/float-newlib/float_req_bl_1010.c[999,1012] [2021-12-06 17:15:44,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:44,320 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:15:44,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44 WrapperNode [2021-12-06 17:15:44,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:44,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:44,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:15:44,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:15:44,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,347 INFO L137 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-12-06 17:15:44,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:44,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:15:44,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:15:44,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:15:44,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:15:44,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:15:44,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:15:44,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:15:44,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (1/1) ... [2021-12-06 17:15:44,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:44,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:44,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:15:44,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:15:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:15:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:15:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:15:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-06 17:15:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 17:15:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:15:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:15:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-06 17:15:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 17:15:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:15:44,484 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:15:44,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:15:44,565 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:15:44,569 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:15:44,569 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 17:15:44,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:44 BoogieIcfgContainer [2021-12-06 17:15:44,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:15:44,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:15:44,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:15:44,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:15:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:15:44" (1/3) ... [2021-12-06 17:15:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ad8bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:44, skipping insertion in model container [2021-12-06 17:15:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:44" (2/3) ... [2021-12-06 17:15:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ad8bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:44, skipping insertion in model container [2021-12-06 17:15:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:44" (3/3) ... [2021-12-06 17:15:44,576 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-12-06 17:15:44,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:15:44,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:15:44,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:15:44,628 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:15:44,629 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:15:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:15:44,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:44,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:44,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2021-12-06 17:15:44,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:15:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257716046] [2021-12-06 17:15:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:44,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:15:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:15:44,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:15:44,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:15:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:44,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:15:44,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:44,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:15:44,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:15:44,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257716046] [2021-12-06 17:15:44,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257716046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:44,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:44,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:44,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613772982] [2021-12-06 17:15:44,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:44,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:15:44,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:15:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:15:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:15:44,780 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:44,791 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-12-06 17:15:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:15:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:15:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:44,801 INFO L225 Difference]: With dead ends: 28 [2021-12-06 17:15:44,802 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 17:15:44,805 INFO L932 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 [2021-12-06 17:15:44,809 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:44,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:15:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 17:15:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 17:15:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-06 17:15:44,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2021-12-06 17:15:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:44,841 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-06 17:15:44,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-06 17:15:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 17:15:44,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:44,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:44,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-06 17:15:45,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:15:45,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2021-12-06 17:15:45,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:15:45,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078557392] [2021-12-06 17:15:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:45,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:15:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:15:45,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:15:45,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:15:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:45,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:15:45,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:45,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:15:45,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-12-06 17:15:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:45,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:15:45,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:15:45,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078557392] [2021-12-06 17:15:45,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078557392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:45,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:45,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:15:45,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510404278] [2021-12-06 17:15:45,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:45,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:15:45,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:15:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:15:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:15:45,389 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:45,410 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-12-06 17:15:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:15:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 17:15:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:45,411 INFO L225 Difference]: With dead ends: 12 [2021-12-06 17:15:45,411 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:15:45,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:15:45,413 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:45,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2021-12-06 17:15:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:15:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:15:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:15:45,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-12-06 17:15:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:45,416 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:15:45,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:15:45,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:15:45,418 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:15:45,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:15:45,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:15:45,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:15:45,664 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:15:45,665 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-12-06 17:15:45,665 INFO L858 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-12-06 17:15:45,666 INFO L858 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-12-06 17:15:45,667 INFO L861 garLoopResultBuilder]: At program point L46(lines 31 47) the Hoare annotation is: true [2021-12-06 17:15:45,667 INFO L858 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-12-06 17:15:45,667 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:15:45,668 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:15:45,668 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:15:45,669 INFO L854 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fabs_float_#res#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2021-12-06 17:15:45,669 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-12-06 17:15:45,670 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-12-06 17:15:45,670 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fabs_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2021-12-06 17:15:45,671 INFO L854 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2021-12-06 17:15:45,671 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 44) no Hoare annotation was computed. [2021-12-06 17:15:45,680 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:15:45,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:15:45,694 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,701 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:15:45 BoogieIcfgContainer [2021-12-06 17:15:45,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:15:45,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:15:45,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:15:45,704 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:15:45,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:44" (3/4) ... [2021-12-06 17:15:45,707 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:15:45,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-06 17:15:45,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 17:15:45,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:15:45,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:15:45,730 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-12-06 17:15:45,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:15:45,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:15:45,734 INFO L158 Benchmark]: Toolchain (without parser) took 1606.41ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 37.5MB in the beginning and 49.8MB in the end (delta: -12.3MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,734 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:15:45,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.32ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 42.2MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.75ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:15:45,735 INFO L158 Benchmark]: Boogie Preprocessor took 21.58ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 39.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,736 INFO L158 Benchmark]: RCFGBuilder took 200.50ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 29.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,736 INFO L158 Benchmark]: TraceAbstraction took 1131.62ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 28.9MB in the beginning and 51.9MB in the end (delta: -23.1MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,736 INFO L158 Benchmark]: Witness Printer took 29.65ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:15:45,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.32ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 42.2MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.75ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.58ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 39.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 200.50ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 29.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1131.62ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 28.9MB in the beginning and 51.9MB in the end (delta: -23.1MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 29.65ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 18 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 6 QuantifiedInterpolants, 110 SizeOfPredicates, 12 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-12-06 17:15:45,744 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,744 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 16]: Loop Invariant [2021-12-06 17:15:45,745 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-06 17:15:45,745 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1bv32 == \result RESULT: Ultimate proved your program to be correct! [2021-12-06 17:15:45,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eead3364-7a54-4c3a-a2d3-1e2a65673122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE