./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:20:15,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:20:15,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:20:15,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:20:15,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:20:15,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:20:15,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:20:15,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:20:15,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:20:15,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:20:15,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:20:15,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:20:15,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:20:15,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:20:15,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:20:15,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:20:15,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:20:15,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:20:15,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:20:15,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:20:15,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:20:15,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:20:15,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:20:15,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:20:15,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:20:15,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:20:15,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:20:15,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:20:15,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:20:15,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:20:15,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:20:15,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:20:15,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:20:15,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:20:15,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:20:15,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:20:15,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:20:15,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:20:15,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:20:15,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:20:15,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:20:15,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:20:15,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:20:15,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:20:15,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:20:15,347 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:20:15,348 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:20:15,348 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:20:15,348 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:20:15,348 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:20:15,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:20:15,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:20:15,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:20:15,350 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:20:15,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:20:15,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:20:15,351 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:20:15,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:20:15,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:20:15,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:20:15,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:20:15,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:20:15,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:20:15,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:20:15,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:20:15,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:20:15,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:20:15,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:20:15,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:20:15,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:20:15,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:20:15,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:20:15,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:15,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:20:15,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:20:15,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:20:15,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:20:15,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:20:15,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:20:15,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:20:15,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:20:15,358 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2021-11-03 05:20:15,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:20:15,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:20:15,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:20:15,709 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:20:15,710 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:20:15,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-03 05:20:15,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/23a1c1d06/e56c86a4be244810a709e6c2047196a3/FLAGb95e44e6d [2021-11-03 05:20:16,269 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:20:16,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-03 05:20:16,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/23a1c1d06/e56c86a4be244810a709e6c2047196a3/FLAGb95e44e6d [2021-11-03 05:20:16,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/23a1c1d06/e56c86a4be244810a709e6c2047196a3 [2021-11-03 05:20:16,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:20:16,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:20:16,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:16,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:20:16,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:20:16,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bb9d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16, skipping insertion in model container [2021-11-03 05:20:16,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:20:16,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:20:16,887 WARN L228 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-03 05:20:16,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:16,899 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:20:16,913 WARN L228 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-03 05:20:16,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:16,927 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:20:16,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16 WrapperNode [2021-11-03 05:20:16,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:16,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:16,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:20:16,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:20:16,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:16,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:20:16,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:20:16,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:20:16,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:20:16,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:20:16,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:20:16,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:20:16,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (1/1) ... [2021-11-03 05:20:16,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:17,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:17,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:20:17,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:20:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:20:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:20:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:20:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:20:17,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:20:17,343 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:20:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:17 BoogieIcfgContainer [2021-11-03 05:20:17,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:20:17,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:20:17,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:20:17,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:20:17,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:20:16" (1/3) ... [2021-11-03 05:20:17,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee04f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:17, skipping insertion in model container [2021-11-03 05:20:17,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:16" (2/3) ... [2021-11-03 05:20:17,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee04f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:17, skipping insertion in model container [2021-11-03 05:20:17,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:17" (3/3) ... [2021-11-03 05:20:17,354 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-11-03 05:20:17,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:20:17,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:20:17,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:20:17,423 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:20:17,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:20:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-11-03 05:20:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 05:20:17,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:17,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 05:20:17,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash 53240, now seen corresponding path program 1 times [2021-11-03 05:20:17,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:17,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852113969] [2021-11-03 05:20:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:17,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:20:17,571 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:20:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:20:17,609 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:20:17,611 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:20:17,612 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:20:17,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:20:17,618 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 05:20:17,621 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:20:17,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:20:17 BoogieIcfgContainer [2021-11-03 05:20:17,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:20:17,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:20:17,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:20:17,638 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:20:17,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:17" (3/4) ... [2021-11-03 05:20:17,641 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:20:17,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:20:17,644 INFO L168 Benchmark]: Toolchain (without parser) took 975.15 ms. Allocated memory is still 115.3 MB. Free memory was 75.3 MB in the beginning and 63.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:17,645 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 115.3 MB. Free memory is still 91.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:17,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.07 ms. Allocated memory is still 115.3 MB. Free memory was 75.1 MB in the beginning and 89.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:17,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.14 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:17,647 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.9 MB in the end (delta: 491.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:17,648 INFO L168 Benchmark]: RCFGBuilder took 366.09 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 76.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:17,648 INFO L168 Benchmark]: TraceAbstraction took 289.46 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 64.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:20:17,649 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 115.3 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:20:17,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 115.3 MB. Free memory is still 91.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.07 ms. Allocated memory is still 115.3 MB. Free memory was 75.1 MB in the beginning and 89.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.14 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.11 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 87.9 MB in the end (delta: 491.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 366.09 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 76.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 289.46 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 64.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 115.3 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-03 05:20:17,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:20:20,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:20:20,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:20:20,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:20:20,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:20:20,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:20:20,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:20:20,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:20:20,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:20:20,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:20:20,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:20:20,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:20:20,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:20:20,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:20:20,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:20:20,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:20:20,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:20:20,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:20:20,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:20:20,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:20:20,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:20:20,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:20:20,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:20:20,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:20:20,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:20:20,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:20:20,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:20:20,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:20:20,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:20:20,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:20:20,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:20:20,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:20:20,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:20:20,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:20:20,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:20:20,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:20:20,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:20:20,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:20:20,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:20:20,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:20:20,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:20:20,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:20:20,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:20:20,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:20:20,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:20:20,152 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:20:20,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:20:20,153 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:20:20,153 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:20:20,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:20:20,154 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:20:20,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:20:20,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:20:20,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:20:20,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:20:20,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:20:20,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:20:20,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:20:20,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:20:20,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:20:20,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:20:20,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:20:20,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:20:20,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:20:20,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:20:20,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:20:20,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:20:20,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:20:20,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:20,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:20:20,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:20:20,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:20:20,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:20:20,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:20:20,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:20:20,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:20:20,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:20:20,162 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2021-11-03 05:20:20,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:20:20,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:20:20,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:20:20,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:20:20,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:20:20,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-03 05:20:20,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/1a97d5ff9/e9aa5b1b82f14b82a7ab9de93c9a940c/FLAG820f8e78f [2021-11-03 05:20:21,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:20:21,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-03 05:20:21,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/1a97d5ff9/e9aa5b1b82f14b82a7ab9de93c9a940c/FLAG820f8e78f [2021-11-03 05:20:21,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/data/1a97d5ff9/e9aa5b1b82f14b82a7ab9de93c9a940c [2021-11-03 05:20:21,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:20:21,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:20:21,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:21,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:20:21,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:20:21,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373c96a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21, skipping insertion in model container [2021-11-03 05:20:21,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:20:21,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:20:21,738 WARN L228 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-03 05:20:21,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:21,755 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:20:21,770 WARN L228 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_caecb82c-efed-4e94-97dc-db68ce3ce0bf/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-03 05:20:21,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:20:21,785 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:20:21,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21 WrapperNode [2021-11-03 05:20:21,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:20:21,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:21,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:20:21,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:20:21,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:20:21,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:20:21,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:20:21,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:20:21,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:20:21,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:20:21,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:20:21,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:20:21,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (1/1) ... [2021-11-03 05:20:21,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:20:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:21,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:20:21,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:20:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:20:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:20:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:20:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:20:22,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:20:22,365 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:20:22,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:22 BoogieIcfgContainer [2021-11-03 05:20:22,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:20:22,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:20:22,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:20:22,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:20:22,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:20:21" (1/3) ... [2021-11-03 05:20:22,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b83394e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:22, skipping insertion in model container [2021-11-03 05:20:22,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:20:21" (2/3) ... [2021-11-03 05:20:22,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b83394e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:22, skipping insertion in model container [2021-11-03 05:20:22,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:22" (3/3) ... [2021-11-03 05:20:22,375 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-11-03 05:20:22,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:20:22,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:20:22,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:20:22,432 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:20:22,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:20:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-11-03 05:20:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:20:22,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:22,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:20:22,451 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-03 05:20:22,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:22,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117013094] [2021-11-03 05:20:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:22,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:22,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:22,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:20:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:22,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:20:22,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:22,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:22,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:22,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117013094] [2021-11-03 05:20:22,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117013094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:22,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:22,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:20:22,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900354968] [2021-11-03 05:20:22,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:20:22,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:20:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:20:22,778 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) 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) [2021-11-03 05:20:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:22,790 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-03 05:20:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:20:22,791 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 [2021-11-03 05:20:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:22,809 INFO L225 Difference]: With dead ends: 17 [2021-11-03 05:20:22,810 INFO L226 Difference]: Without dead ends: 7 [2021-11-03 05:20:22,812 INFO L786 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 [2021-11-03 05:20:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-03 05:20:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-03 05:20:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-11-03 05:20:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-03 05:20:22,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-03 05:20:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:22,839 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-03 05:20:22,839 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) [2021-11-03 05:20:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-03 05:20:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:20:22,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:22,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:20:22,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:23,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:23,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-03 05:20:23,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:23,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351898846] [2021-11-03 05:20:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:23,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:23,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:23,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:20:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:23,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:20:23,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:37,462 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 05:20:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:38,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:54,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:54,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351898846] [2021-11-03 05:20:54,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351898846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:54,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:54,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 05:20:54,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449047464] [2021-11-03 05:20:54,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:20:54,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:20:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=26, Unknown=2, NotChecked=0, Total=42 [2021-11-03 05:20:54,879 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:30,860 WARN L207 SmtUtils]: Spent 30.07 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-11-03 05:21:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:30,861 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-11-03 05:21:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:21:30,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:21:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:30,862 INFO L225 Difference]: With dead ends: 7 [2021-11-03 05:21:30,862 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:21:30,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=21, Invalid=33, Unknown=2, NotChecked=0, Total=56 [2021-11-03 05:21:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:21:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:21:30,864 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) [2021-11-03 05:21:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:21:30,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-03 05:21:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:30,865 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:21:30,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:21:30,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:21:30,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:21:30,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:21:31,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:31,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:21:31,076 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:21:31,076 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 05:21:31,076 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:21:31,077 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 05:21:31,077 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-03 05:21:31,077 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-11-03 05:21:31,077 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-11-03 05:21:31,078 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-11-03 05:21:31,078 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-11-03 05:21:31,078 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 15) no Hoare annotation was computed. [2021-11-03 05:21:31,081 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:21:31,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:21:31,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:21:31 BoogieIcfgContainer [2021-11-03 05:21:31,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:21:31,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:21:31,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:21:31,087 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:21:31,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:22" (3/4) ... [2021-11-03 05:21:31,093 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:21:31,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 05:21:31,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 05:21:31,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:21:31,119 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:21:31,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:21:31,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:21:31,158 INFO L168 Benchmark]: Toolchain (without parser) took 69599.67 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 36.8 MB in the beginning and 76.2 MB in the end (delta: -39.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,158 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:21:31,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.87 ms. Allocated memory is still 71.3 MB. Free memory was 36.7 MB in the beginning and 48.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.48 ms. Allocated memory is still 71.3 MB. Free memory was 48.5 MB in the beginning and 56.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,162 INFO L168 Benchmark]: Boogie Preprocessor took 59.24 ms. Allocated memory is still 71.3 MB. Free memory was 56.2 MB in the beginning and 55.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,162 INFO L168 Benchmark]: RCFGBuilder took 457.47 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 45.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,163 INFO L168 Benchmark]: TraceAbstraction took 68716.95 ms. Allocated memory is still 71.3 MB. Free memory was 45.4 MB in the beginning and 30.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,164 INFO L168 Benchmark]: Witness Printer took 69.78 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 30.7 MB in the beginning and 76.2 MB in the end (delta: -45.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:31,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 226.87 ms. Allocated memory is still 71.3 MB. Free memory was 36.7 MB in the beginning and 48.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.48 ms. Allocated memory is still 71.3 MB. Free memory was 48.5 MB in the beginning and 56.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.24 ms. Allocated memory is still 71.3 MB. Free memory was 56.2 MB in the beginning and 55.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.47 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 45.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68716.95 ms. Allocated memory is still 71.3 MB. Free memory was 45.4 MB in the beginning and 30.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 69.78 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 30.7 MB in the beginning and 76.2 MB in the end (delta: -45.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * 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: 14]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 50.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be correct! [2021-11-03 05:21:31,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caecb82c-efed-4e94-97dc-db68ce3ce0bf/bin/utaipan-aC7eJsxGYH/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 Result: TRUE