./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:16:44,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:16:44,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:16:44,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:16:44,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:16:44,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:16:44,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:16:44,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:16:44,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:16:44,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:16:44,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:16:44,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:16:44,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:16:44,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:16:44,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:16:44,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:16:44,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:16:44,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:16:44,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:16:44,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:16:44,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:16:44,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:16:44,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:16:44,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:16:44,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:16:44,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:16:44,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:16:44,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:16:44,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:16:44,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:16:44,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:16:44,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:16:44,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:16:44,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:16:44,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:16:44,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:16:44,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:16:44,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:16:44,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:16:44,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:16:44,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:16:44,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:16:44,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:16:44,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:16:44,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:16:44,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:16:44,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:16:44,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:16:44,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:16:44,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:16:44,509 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:16:44,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:16:44,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:16:44,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:16:44,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:16:44,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:16:44,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:16:44,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:16:44,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:16:44,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:16:44,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:16:44,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:16:44,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:16:44,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:16:44,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:16:44,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:16:44,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:44,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:16:44,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:16:44,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:16:44,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:16:44,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:16:44,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:16:44,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:16:44,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:16:44,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:16:44,521 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2021-11-19 05:16:44,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:16:44,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:16:44,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:16:44,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:16:44,923 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:16:44,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-19 05:16:45,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/45c406d7e/5015dbe0441441afa5a476c1f6d2afc2/FLAG9a535d6dd [2021-11-19 05:16:45,557 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:16:45,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-19 05:16:45,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/45c406d7e/5015dbe0441441afa5a476c1f6d2afc2/FLAG9a535d6dd [2021-11-19 05:16:45,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/45c406d7e/5015dbe0441441afa5a476c1f6d2afc2 [2021-11-19 05:16:45,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:16:45,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:16:45,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:45,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:16:45,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:16:45,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:45" (1/1) ... [2021-11-19 05:16:45,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c2f7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:45, skipping insertion in model container [2021-11-19 05:16:45,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:45" (1/1) ... [2021-11-19 05:16:45,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:16:45,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:16:46,169 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-19 05:16:46,200 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:46,216 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:16:46,232 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-19 05:16:46,237 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:46,255 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:16:46,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46 WrapperNode [2021-11-19 05:16:46,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:46,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:16:46,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:16:46,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:16:46,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,303 INFO L137 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-19 05:16:46,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:16:46,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:16:46,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:16:46,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:16:46,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:16:46,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:16:46,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:16:46,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:16:46,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (1/1) ... [2021-11-19 05:16:46,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:16:46,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:16:46,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:16:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:16:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:16:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:16:46,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:16:46,499 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:16:46,501 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:16:46,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:16:46,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:16:46,635 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:16:46,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:46 BoogieIcfgContainer [2021-11-19 05:16:46,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:16:46,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:16:46,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:16:46,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:16:46,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:45" (1/3) ... [2021-11-19 05:16:46,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406f1d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:46, skipping insertion in model container [2021-11-19 05:16:46,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:46" (2/3) ... [2021-11-19 05:16:46,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406f1d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:46, skipping insertion in model container [2021-11-19 05:16:46,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:46" (3/3) ... [2021-11-19 05:16:46,678 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2021-11-19 05:16:46,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:16:46,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:16:46,769 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:16:46,779 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 [2021-11-19 05:16:46,780 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:16:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) [2021-11-19 05:16:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:16:46,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:46,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:16:46,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:16:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2021-11-19 05:16:46,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:46,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150040697] [2021-11-19 05:16:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:46,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:47,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:16:47,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150040697] [2021-11-19 05:16:47,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150040697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:47,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:47,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:16:47,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540467703] [2021-11-19 05:16:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:47,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:16:47,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:16:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:16:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:16:47,111 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 05:16:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:47,129 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-19 05:16:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:16:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-19 05:16:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:47,143 INFO L225 Difference]: With dead ends: 20 [2021-11-19 05:16:47,143 INFO L226 Difference]: Without dead ends: 8 [2021-11-19 05:16:47,147 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 [2021-11-19 05:16:47,152 INFO L933 BasicCegarLoop]: 12 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, 12 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 [2021-11-19 05:16:47,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:16:47,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-19 05:16:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-19 05:16:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-19 05:16:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-19 05:16:47,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-19 05:16:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:47,194 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-19 05:16:47,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 05:16:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-19 05:16:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:16:47,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:47,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:47,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:16:47,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:16:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2021-11-19 05:16:47,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:16:47,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452314880] [2021-11-19 05:16:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:47,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:16:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:47,232 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:16:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:47,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:16:47,271 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:16:47,273 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:16:47,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:16:47,281 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:16:47,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:16:47,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:16:47 BoogieIcfgContainer [2021-11-19 05:16:47,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:16:47,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:16:47,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:16:47,313 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:16:47,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:46" (3/4) ... [2021-11-19 05:16:47,318 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:16:47,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:16:47,320 INFO L158 Benchmark]: Toolchain (without parser) took 1394.52ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 44.1MB in the end (delta: 19.0MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-19 05:16:47,320 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 102.8MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:47,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.44ms. Allocated memory is still 102.8MB. Free memory was 62.9MB in the beginning and 77.9MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:16:47,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.90ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:16:47,323 INFO L158 Benchmark]: Boogie Preprocessor took 28.15ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.5MB in the end (delta: 860.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:47,324 INFO L158 Benchmark]: RCFGBuilder took 303.59ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 66.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:16:47,325 INFO L158 Benchmark]: TraceAbstraction took 672.24ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 44.4MB in the end (delta: 21.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-19 05:16:47,326 INFO L158 Benchmark]: Witness Printer took 5.97ms. Allocated memory is still 102.8MB. Free memory was 44.4MB in the beginning and 44.1MB in the end (delta: 281.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:47,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 102.8MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.44ms. Allocated memory is still 102.8MB. Free memory was 62.9MB in the beginning and 77.9MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.90ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.15ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.5MB in the end (delta: 860.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 303.59ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 66.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 672.24ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 44.4MB in the end (delta: 21.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.97ms. Allocated memory is still 102.8MB. Free memory was 44.4MB in the beginning and 44.1MB in the end (delta: 281.2kB). 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: 14]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1, term=1] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, temp=0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 12 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, 12 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=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-11-19 05:16:47,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/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_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:16:50,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:16:50,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:16:50,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:16:50,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:16:50,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:16:50,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:16:50,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:16:50,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:16:50,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:16:50,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:16:50,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:16:50,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:16:50,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:16:50,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:16:50,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:16:50,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:16:50,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:16:50,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:16:50,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:16:50,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:16:50,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:16:50,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:16:50,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:16:50,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:16:50,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:16:50,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:16:50,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:16:50,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:16:50,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:16:50,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:16:50,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:16:50,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:16:50,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:16:50,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:16:50,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:16:50,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:16:50,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:16:50,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:16:50,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:16:50,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:16:50,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:16:50,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:16:50,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:16:50,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:16:50,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:16:50,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:16:50,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:16:50,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:16:50,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:16:50,686 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:16:50,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:16:50,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:16:50,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:16:50,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:16:50,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:16:50,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:16:50,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:16:50,690 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:16:50,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:16:50,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:16:50,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:16:50,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:16:50,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:16:50,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:16:50,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:16:50,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:16:50,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:50,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:16:50,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:16:50,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:16:50,694 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:16:50,695 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:16:50,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:16:50,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:16:50,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:16:50,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:16:50,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:16:50,697 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2021-11-19 05:16:51,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:16:51,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:16:51,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:16:51,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:16:51,202 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:16:51,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-19 05:16:51,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/90010831e/e1bbd84bcdf8480994237bd1e75ab302/FLAGd66ac345b [2021-11-19 05:16:51,917 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:16:51,918 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-19 05:16:51,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/90010831e/e1bbd84bcdf8480994237bd1e75ab302/FLAGd66ac345b [2021-11-19 05:16:52,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/data/90010831e/e1bbd84bcdf8480994237bd1e75ab302 [2021-11-19 05:16:52,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:16:52,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:16:52,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:52,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:16:52,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:16:52,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1906c18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52, skipping insertion in model container [2021-11-19 05:16:52,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:16:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:16:52,493 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-19 05:16:52,513 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:52,529 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:16:52,546 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_1d481e52-fa4c-43a9-bbaa-75495632ff63/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-19 05:16:52,552 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:16:52,599 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:16:52,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52 WrapperNode [2021-11-19 05:16:52,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:16:52,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:16:52,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:16:52,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:16:52,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,664 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-19 05:16:52,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:16:52,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:16:52,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:16:52,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:16:52,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:16:52,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:16:52,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:16:52,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:16:52,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (1/1) ... [2021-11-19 05:16:52,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:16:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:16:52,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:16:52,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:16:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:16:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:16:52,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:16:52,952 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:16:52,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:16:55,636 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:16:55,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:16:55,642 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:16:55,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:55 BoogieIcfgContainer [2021-11-19 05:16:55,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:16:55,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:16:55,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:16:55,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:16:55,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:52" (1/3) ... [2021-11-19 05:16:55,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4f05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:55, skipping insertion in model container [2021-11-19 05:16:55,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:52" (2/3) ... [2021-11-19 05:16:55,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4f05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:55, skipping insertion in model container [2021-11-19 05:16:55,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:55" (3/3) ... [2021-11-19 05:16:55,656 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2021-11-19 05:16:55,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:16:55,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:16:55,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:16:55,729 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 [2021-11-19 05:16:55,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:16:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) [2021-11-19 05:16:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 05:16:55,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:55,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 05:16:55,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:16:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2021-11-19 05:16:55,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:55,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221789891] [2021-11-19 05:16:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:55,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:55,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:16:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:16:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:16:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:56,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:16:56,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:56,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221789891] [2021-11-19 05:16:56,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221789891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:16:56,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:16:56,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:16:56,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405867073] [2021-11-19 05:16:56,249 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:16:56,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:16:56,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:16:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:16:56,296 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 05:16:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:56,313 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-19 05:16:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:16:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-19 05:16:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:56,325 INFO L225 Difference]: With dead ends: 20 [2021-11-19 05:16:56,325 INFO L226 Difference]: Without dead ends: 8 [2021-11-19 05:16:56,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:16:56,334 INFO L933 BasicCegarLoop]: 12 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, 12 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 [2021-11-19 05:16:56,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:16:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-19 05:16:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-19 05:16:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-19 05:16:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-19 05:16:56,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-19 05:16:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:56,374 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-19 05:16:56,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 05:16:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-19 05:16:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:16:56,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:56,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:56,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:56,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:56,596 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:16:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2021-11-19 05:16:56,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:56,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285174191] [2021-11-19 05:16:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:16:56,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:56,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:56,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:16:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:57,226 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:16:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:16:57,883 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 05:16:57,883 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:16:57,885 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:16:57,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:58,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:58,093 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 05:16:58,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:16:58,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:16:58 BoogieIcfgContainer [2021-11-19 05:16:58,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:16:58,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:16:58,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:16:58,143 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:16:58,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:55" (3/4) ... [2021-11-19 05:16:58,146 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:16:58,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:16:58,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:16:58,219 INFO L158 Benchmark]: Toolchain (without parser) took 5943.94ms. Allocated memory is still 79.7MB. Free memory was 60.6MB in the beginning and 56.7MB in the end (delta: 3.9MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-19 05:16:58,219 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:58,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.28ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 63.8MB in the end (delta: -3.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-19 05:16:58,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.44ms. Allocated memory is still 79.7MB. Free memory was 63.8MB in the beginning and 62.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:16:58,225 INFO L158 Benchmark]: Boogie Preprocessor took 54.17ms. Allocated memory is still 79.7MB. Free memory was 62.1MB in the beginning and 60.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:58,226 INFO L158 Benchmark]: RCFGBuilder took 2911.42ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 52.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:16:58,226 INFO L158 Benchmark]: TraceAbstraction took 2492.44ms. Allocated memory is still 79.7MB. Free memory was 51.7MB in the beginning and 58.4MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:58,228 INFO L158 Benchmark]: Witness Printer took 75.78ms. Allocated memory is still 79.7MB. Free memory was 58.4MB in the beginning and 56.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:16:58,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.28ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 63.8MB in the end (delta: -3.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.44ms. Allocated memory is still 79.7MB. Free memory was 63.8MB in the beginning and 62.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.17ms. Allocated memory is still 79.7MB. Free memory was 62.1MB in the beginning and 60.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2911.42ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 52.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2492.44ms. Allocated memory is still 79.7MB. Free memory was 51.7MB in the beginning and 58.4MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.78ms. Allocated memory is still 79.7MB. Free memory was 58.4MB in the beginning and 56.7MB in the end (delta: 1.6MB). 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1.0, result=-2.0, term=1.0, x=2.0] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, exp=3.0, result=-2.0, temp=0, term=2.0, x=2.0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, 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, 12 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, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 0.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 05:16:58,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d481e52-fa4c-43a9-bbaa-75495632ff63/bin/uautomizer-ZXIjhQolGL/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE