./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:36:56,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:36:56,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:36:56,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:36:56,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:36:56,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:36:56,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:36:56,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:36:56,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:36:56,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:36:56,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:36:56,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:36:56,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:36:56,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:36:56,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:36:56,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:36:56,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:36:56,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:36:56,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:36:56,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:36:56,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:36:56,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:36:56,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:36:56,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:36:56,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:36:56,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:36:56,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:36:56,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:36:56,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:36:56,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:36:56,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:36:56,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:36:56,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:36:56,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:36:56,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:36:56,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:36:56,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:36:56,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:36:56,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:36:56,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:36:56,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:36:56,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:36:56,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:36:56,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:36:56,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:36:56,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:36:56,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:36:56,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:36:56,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:36:56,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:36:56,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:36:56,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:36:56,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:36:56,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:36:56,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:36:56,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:36:56,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:36:56,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:36:56,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:36:56,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:36:56,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:36:56,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:36:56,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:36:56,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:36:56,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:36:56,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:36:56,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:36:56,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:36:56,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:36:56,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:36:56,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:36:56,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:36:56,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:36:56,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:36:56,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:36:56,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:36:56,525 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2021-12-06 21:36:56,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:36:56,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:36:56,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:36:56,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:36:56,720 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:36:56,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-12-06 21:36:56,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/bdfaa1888/26127f44763c4190afa85d420cc490ff/FLAG4d04ec2dd [2021-12-06 21:36:57,173 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:36:57,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-12-06 21:36:57,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/bdfaa1888/26127f44763c4190afa85d420cc490ff/FLAG4d04ec2dd [2021-12-06 21:36:57,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/bdfaa1888/26127f44763c4190afa85d420cc490ff [2021-12-06 21:36:57,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:36:57,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:36:57,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:36:57,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:36:57,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:36:57,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73821f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57, skipping insertion in model container [2021-12-06 21:36:57,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:36:57,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:36:57,346 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-12-06 21:36:57,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:36:57,357 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:36:57,385 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-12-06 21:36:57,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:36:57,401 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:36:57,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57 WrapperNode [2021-12-06 21:36:57,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:36:57,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:36:57,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:36:57,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:36:57,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,447 INFO L137 Inliner]: procedures = 19, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2021-12-06 21:36:57,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:36:57,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:36:57,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:36:57,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:36:57,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:36:57,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:36:57,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:36:57,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:36:57,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (1/1) ... [2021-12-06 21:36:57,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:36:57,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:36:57,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:36:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:36:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:36:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:36:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-06 21:36:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:36:57,624 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:36:57,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:36:57,795 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:36:57,801 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:36:57,801 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 21:36:57,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:36:57 BoogieIcfgContainer [2021-12-06 21:36:57,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:36:57,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:36:57,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:36:57,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:36:57,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:36:57" (1/3) ... [2021-12-06 21:36:57,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee6a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:36:57, skipping insertion in model container [2021-12-06 21:36:57,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:36:57" (2/3) ... [2021-12-06 21:36:57,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bee6a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:36:57, skipping insertion in model container [2021-12-06 21:36:57,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:36:57" (3/3) ... [2021-12-06 21:36:57,810 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-12-06 21:36:57,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:36:57,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:36:57,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:36:57,857 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 21:36:57,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:36:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 21:36:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 21:36:57,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:36:57,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:36:57,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:36:57,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:36:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-12-06 21:36:57,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:36:57,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424263035] [2021-12-06 21:36:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:36:57,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:36:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:36:58,035 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 21:36:58,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:36:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424263035] [2021-12-06 21:36:58,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424263035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:36:58,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:36:58,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:36:58,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260876417] [2021-12-06 21:36:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:36:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:36:58,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:36:58,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:36:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:36:58,068 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:36:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:36:58,086 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-12-06 21:36:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:36:58,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-12-06 21:36:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:36:58,094 INFO L225 Difference]: With dead ends: 72 [2021-12-06 21:36:58,094 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 21:36:58,096 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 21:36:58,099 INFO L933 BasicCegarLoop]: 48 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, 48 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 21:36:58,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:36:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 21:36:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 21:36:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 21:36:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-12-06 21:36:58,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-12-06 21:36:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:36:58,124 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-12-06 21:36:58,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:36:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-12-06 21:36:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 21:36:58,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:36:58,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:36:58,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:36:58,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:36:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:36:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-12-06 21:36:58,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:36:58,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440891639] [2021-12-06 21:36:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:36:58,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:36:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:36:58,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:36:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:36:58,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:36:58,205 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 21:36:58,206 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:36:58,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:36:58,211 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 21:36:58,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:36:58,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:36:58 BoogieIcfgContainer [2021-12-06 21:36:58,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:36:58,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:36:58,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:36:58,237 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:36:58,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:36:57" (3/4) ... [2021-12-06 21:36:58,240 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 21:36:58,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:36:58,240 INFO L158 Benchmark]: Toolchain (without parser) took 1049.43ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 55.9MB in the end (delta: 21.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,241 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:36:58,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.64ms. Allocated memory is still 119.5MB. Free memory was 77.0MB in the beginning and 64.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.15ms. Allocated memory is still 119.5MB. Free memory was 64.6MB in the beginning and 62.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,242 INFO L158 Benchmark]: Boogie Preprocessor took 33.86ms. Allocated memory is still 119.5MB. Free memory was 62.4MB in the beginning and 60.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,242 INFO L158 Benchmark]: RCFGBuilder took 320.60ms. Allocated memory is still 119.5MB. Free memory was 60.5MB in the beginning and 85.2MB in the end (delta: -24.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,243 INFO L158 Benchmark]: TraceAbstraction took 431.58ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 55.9MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-06 21:36:58,243 INFO L158 Benchmark]: Witness Printer took 2.89ms. Allocated memory is still 119.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:36:58,245 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 119.5MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.64ms. Allocated memory is still 119.5MB. Free memory was 77.0MB in the beginning and 64.6MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.15ms. Allocated memory is still 119.5MB. Free memory was 64.6MB in the beginning and 62.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.86ms. Allocated memory is still 119.5MB. Free memory was 62.4MB in the beginning and 60.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.60ms. Allocated memory is still 119.5MB. Free memory was 60.5MB in the beginning and 85.2MB in the end (delta: -24.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * TraceAbstraction took 431.58ms. Allocated memory is still 119.5MB. Free memory was 84.7MB in the beginning and 55.9MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.89ms. Allocated memory is still 119.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = 0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L65] COND TRUE ix >= 0x50800000 VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L143] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 48 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, 48 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=37occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 21:36:58,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:36:59,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:36:59,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:36:59,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:36:59,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:36:59,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:36:59,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:36:59,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:36:59,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:36:59,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:36:59,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:36:59,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:36:59,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:36:59,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:36:59,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:36:59,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:36:59,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:36:59,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:36:59,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:36:59,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:36:59,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:36:59,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:36:59,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:36:59,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:36:59,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:36:59,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:36:59,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:36:59,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:36:59,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:36:59,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:36:59,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:36:59,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:36:59,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:36:59,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:36:59,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:36:59,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:36:59,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:36:59,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:36:59,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:36:59,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:36:59,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:36:59,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 21:36:59,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:36:59,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:36:59,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:36:59,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:36:59,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:36:59,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:36:59,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:36:59,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:36:59,918 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:36:59,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:36:59,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:36:59,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:36:59,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:36:59,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:36:59,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:36:59,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:36:59,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:36:59,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:36:59,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:36:59,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 21:36:59,923 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2021-12-06 21:37:00,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:37:00,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:37:00,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:37:00,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:37:00,178 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:37:00,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-12-06 21:37:00,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/07dd29082/177796e264014100ade0e5ad989cd2c5/FLAG4932be296 [2021-12-06 21:37:00,613 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:37:00,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-12-06 21:37:00,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/07dd29082/177796e264014100ade0e5ad989cd2c5/FLAG4932be296 [2021-12-06 21:37:00,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/data/07dd29082/177796e264014100ade0e5ad989cd2c5 [2021-12-06 21:37:00,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:37:00,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:37:00,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:37:00,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:37:00,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:37:00,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31411bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00, skipping insertion in model container [2021-12-06 21:37:00,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:37:00,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:37:00,791 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-12-06 21:37:00,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:37:00,812 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:37:00,851 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_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-12-06 21:37:00,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:37:00,868 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:37:00,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00 WrapperNode [2021-12-06 21:37:00,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:37:00,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:37:00,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:37:00,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:37:00,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,908 INFO L137 Inliner]: procedures = 22, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2021-12-06 21:37:00,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:37:00,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:37:00,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:37:00,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:37:00,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:37:00,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:37:00,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:37:00,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:37:00,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (1/1) ... [2021-12-06 21:37:00,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:37:00,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:37:00,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:37:00,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:37:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:37:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-12-06 21:37:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:37:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 21:37:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:37:01,076 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:37:01,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:37:13,009 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:37:13,014 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:37:13,014 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 21:37:13,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:13 BoogieIcfgContainer [2021-12-06 21:37:13,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:37:13,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:37:13,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:37:13,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:37:13,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:37:00" (1/3) ... [2021-12-06 21:37:13,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15019f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:37:13, skipping insertion in model container [2021-12-06 21:37:13,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:37:00" (2/3) ... [2021-12-06 21:37:13,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15019f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:37:13, skipping insertion in model container [2021-12-06 21:37:13,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:13" (3/3) ... [2021-12-06 21:37:13,024 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-12-06 21:37:13,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:37:13,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:37:13,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:37:13,070 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 21:37:13,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:37:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 21:37:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 21:37:13,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:13,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:13,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-12-06 21:37:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:37:13,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618692837] [2021-12-06 21:37:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:13,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:37:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:37:13,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:37:13,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 21:37:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:13,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:37:13,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:37:13,936 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 21:37:13,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:37:13,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:37:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618692837] [2021-12-06 21:37:13,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618692837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:13,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:13,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:37:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318515816] [2021-12-06 21:37:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:37:13,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:37:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:37:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:37:13,967 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:37:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:13,979 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-12-06 21:37:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:37:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-12-06 21:37:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:13,987 INFO L225 Difference]: With dead ends: 72 [2021-12-06 21:37:13,987 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 21:37:13,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 21:37:13,992 INFO L933 BasicCegarLoop]: 48 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, 48 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 21:37:13,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:37:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 21:37:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 21:37:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 21:37:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-12-06 21:37:14,019 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-12-06 21:37:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:14,020 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-12-06 21:37:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:37:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-12-06 21:37:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 21:37:14,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:14,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:14,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:37:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:37:14,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-12-06 21:37:14,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:37:14,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716334623] [2021-12-06 21:37:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:14,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:37:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:37:14,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:37:14,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 21:37:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:14,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:37:14,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:37:15,202 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 21:37:15,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:37:15,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:37:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716334623] [2021-12-06 21:37:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716334623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:15,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:15,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508493558] [2021-12-06 21:37:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:15,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:15,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:37:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:15,206 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 21:37:17,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:19,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:21,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:23,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:24,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:27,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:27,090 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-12-06 21:37:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:37:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 21:37:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:27,138 INFO L225 Difference]: With dead ends: 43 [2021-12-06 21:37:27,138 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 21:37:27,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:27,140 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:27,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 13 Unchecked, 11.8s Time] [2021-12-06 21:37:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 21:37:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 21:37:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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 21:37:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-12-06 21:37:27,145 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 11 [2021-12-06 21:37:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:27,145 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-12-06 21:37:27,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 21:37:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-12-06 21:37:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 21:37:27,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:27,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:27,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 21:37:27,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:37:27,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-12-06 21:37:27,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:37:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992253860] [2021-12-06 21:37:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:27,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:37:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:37:27,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:37:27,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 21:37:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:28,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:37:28,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:37:28,414 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 21:37:28,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:37:28,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:37:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992253860] [2021-12-06 21:37:28,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992253860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:28,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:28,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:28,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318112176] [2021-12-06 21:37:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:28,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:28,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:37:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:28,417 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:30,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:32,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:34,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:36,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:37,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:38,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:40,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:40,693 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-06 21:37:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:37:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 21:37:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:40,694 INFO L225 Difference]: With dead ends: 45 [2021-12-06 21:37:40,695 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 21:37:40,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:40,696 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:40,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-12-06 21:37:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 21:37:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-12-06 21:37:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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 21:37:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-06 21:37:40,702 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2021-12-06 21:37:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:40,702 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-06 21:37:40,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:37:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-06 21:37:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 21:37:40,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:40,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:40,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 21:37:40,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:37:40,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1612074501, now seen corresponding path program 1 times [2021-12-06 21:37:40,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:37:40,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880651172] [2021-12-06 21:37:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:40,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:37:40,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:37:40,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:37:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 21:37:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:42,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:37:42,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:37:42,824 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 21:37:42,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:37:42,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:37:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880651172] [2021-12-06 21:37:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880651172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:42,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:37:42,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95196713] [2021-12-06 21:37:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:37:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:37:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:37:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:37:42,827 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 21:37:45,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:47,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:49,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:51,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:53,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:54,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:37:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:37:54,873 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-12-06 21:37:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:37:54,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-12-06 21:37:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:37:54,924 INFO L225 Difference]: With dead ends: 48 [2021-12-06 21:37:54,924 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 21:37:54,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:37:54,925 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:37:54,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 109 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 12 Unchecked, 11.9s Time] [2021-12-06 21:37:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 21:37:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 21:37:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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 21:37:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-12-06 21:37:54,930 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2021-12-06 21:37:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:37:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-12-06 21:37:54,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 21:37:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-12-06 21:37:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 21:37:54,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:37:54,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:37:54,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 21:37:55,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:37:55,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:37:55,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:37:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-12-06 21:37:55,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:37:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40430941] [2021-12-06 21:37:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:37:55,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:37:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:37:55,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:37:55,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 21:37:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:37:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:37:56,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:37:57,538 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 21:37:57,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:37:57,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:37:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40430941] [2021-12-06 21:37:57,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40430941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:37:57,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:37:57,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:37:57,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917377601] [2021-12-06 21:37:57,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:37:57,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:37:57,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:37:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:37:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:37:57,540 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 21:37:59,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:02,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:04,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:06,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:08,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:10,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:13,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:15,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:17,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:38:18,071 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-12-06 21:38:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:38:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-12-06 21:38:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:38:18,091 INFO L225 Difference]: With dead ends: 55 [2021-12-06 21:38:18,091 INFO L226 Difference]: Without dead ends: 41 [2021-12-06 21:38:18,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:38:18,092 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:38:18,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 20.5s Time] [2021-12-06 21:38:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-06 21:38:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2021-12-06 21:38:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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 21:38:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-12-06 21:38:18,097 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2021-12-06 21:38:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:38:18,097 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-12-06 21:38:18,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 21:38:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-12-06 21:38:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 21:38:18,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:38:18,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:38:18,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 21:38:18,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:38:18,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:38:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:38:18,307 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-12-06 21:38:18,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:38:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368715465] [2021-12-06 21:38:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:38:18,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:38:18,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:38:18,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:38:18,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 21:38:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:38:19,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 21:38:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:38:19,856 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 21:38:19,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:38:19,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:38:19,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368715465] [2021-12-06 21:38:19,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368715465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:38:19,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:38:19,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:38:19,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165866308] [2021-12-06 21:38:19,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:38:19,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:38:19,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:38:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:38:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:38:19,858 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 21:38:22,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:24,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:26,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:28,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:30,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:33,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:38:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:38:34,003 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-12-06 21:38:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:38:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2021-12-06 21:38:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:38:34,005 INFO L225 Difference]: With dead ends: 40 [2021-12-06 21:38:34,006 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 21:38:34,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:38:34,007 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:38:34,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 220 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 13.5s Time] [2021-12-06 21:38:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 21:38:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 21:38:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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 21:38:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-12-06 21:38:34,012 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 17 [2021-12-06 21:38:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:38:34,012 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-12-06 21:38:34,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 21:38:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-12-06 21:38:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 21:38:34,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:38:34,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:38:34,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 21:38:34,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:38:34,215 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:38:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:38:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1278549058, now seen corresponding path program 1 times [2021-12-06 21:38:34,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:38:34,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934638350] [2021-12-06 21:38:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:38:34,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:38:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:38:34,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:38:34,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 21:38:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:38:36,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:38:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:38:36,473 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 21:38:36,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:38:36,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:38:36,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934638350] [2021-12-06 21:38:36,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934638350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:38:36,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:38:36,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:38:36,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606871968] [2021-12-06 21:38:36,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:38:36,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:38:36,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:38:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:38:36,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:38:36,476 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21:38:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:38:36,663 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-12-06 21:38:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:38:36,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-12-06 21:38:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:38:36,664 INFO L225 Difference]: With dead ends: 29 [2021-12-06 21:38:36,664 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 21:38:36,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:38:36,666 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:38:36,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2021-12-06 21:38:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 21:38:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 21:38:36,668 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 21:38:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 21:38:36,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-12-06 21:38:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:38:36,669 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:38:36,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21:38:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 21:38:36,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 21:38:36,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:38:36,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 21:38:36,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:38:36,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 21:38:37,280 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-06 21:38:37,281 INFO L858 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-12-06 21:38:37,281 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 21:38:37,281 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 21:38:37,281 INFO L854 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-12-06 21:38:37,281 INFO L858 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-12-06 21:38:37,282 INFO L858 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-12-06 21:38:37,282 INFO L854 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|)) (_ +zero 8 24)) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2021-12-06 21:38:37,282 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-12-06 21:38:37,282 INFO L854 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2021-12-06 21:38:37,282 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-12-06 21:38:37,282 INFO L858 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-12-06 21:38:37,283 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 21:38:37,284 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-12-06 21:38:37,284 INFO L858 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-12-06 21:38:37,284 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-12-06 21:38:37,284 INFO L861 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-12-06 21:38:37,284 INFO L858 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-12-06 21:38:37,284 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L854 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (and (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 21:38:37,285 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-12-06 21:38:37,286 INFO L858 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-12-06 21:38:37,286 INFO L854 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2021-12-06 21:38:37,286 INFO L858 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-12-06 21:38:37,286 INFO L858 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-12-06 21:38:37,286 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-12-06 21:38:37,286 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-12-06 21:38:37,290 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:38:37,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:38:37,304 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,305 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,306 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,307 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:38:37 BoogieIcfgContainer [2021-12-06 21:38:37,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:38:37,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:38:37,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:38:37,308 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:38:37,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:37:13" (3/4) ... [2021-12-06 21:38:37,311 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 21:38:37,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-06 21:38:37,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-12-06 21:38:37,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 21:38:37,323 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 21:38:37,341 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() [2021-12-06 21:38:37,341 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2021-12-06 21:38:37,342 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2021-12-06 21:38:37,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:38:37,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:38:37,358 INFO L158 Benchmark]: Toolchain (without parser) took 96725.94ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.9MB in the beginning and 49.4MB in the end (delta: -12.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,358 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:38:37,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.83ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.8MB in the beginning and 66.2MB in the end (delta: -29.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.74ms. Allocated memory is still 86.0MB. Free memory was 66.2MB in the beginning and 63.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,359 INFO L158 Benchmark]: Boogie Preprocessor took 32.35ms. Allocated memory is still 86.0MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,359 INFO L158 Benchmark]: RCFGBuilder took 12074.36ms. Allocated memory is still 86.0MB. Free memory was 61.4MB in the beginning and 64.6MB in the end (delta: -3.3MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,359 INFO L158 Benchmark]: TraceAbstraction took 84289.78ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 55.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,359 INFO L158 Benchmark]: Witness Printer took 49.29ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 49.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 21:38:37,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.83ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.8MB in the beginning and 66.2MB in the end (delta: -29.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.74ms. Allocated memory is still 86.0MB. Free memory was 66.2MB in the beginning and 63.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.35ms. Allocated memory is still 86.0MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 12074.36ms. Allocated memory is still 86.0MB. Free memory was 61.4MB in the beginning and 64.6MB in the end (delta: -3.3MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * TraceAbstraction took 84289.78ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 55.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 49.29ms. Allocated memory is still 86.0MB. Free memory was 55.1MB in the beginning and 49.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 144]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 84.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 71.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 69.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 668 SdHoareTripleChecker+Invalid, 68.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 453 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 215 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 38, 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, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 88 HoareAnnotationTreeSize, 7 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 6 QuantifiedInterpolants, 451 SizeOfPredicates, 40 NumberOfNonLiveVariables, 735 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2021-12-06 21:38:37,367 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,367 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 55]: Loop Invariant [2021-12-06 21:38:37,368 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-06 21:38:37,368 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((\result == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() RESULT: Ultimate proved your program to be correct! [2021-12-06 21:38:37,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28ee6a9-2b61-48f8-99bb-032c86b90b4c/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