./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:37:19,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:37:19,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:37:19,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:37:19,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:37:19,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:37:19,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:37:19,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:37:19,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:37:19,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:37:19,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:37:19,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:37:19,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:37:19,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:37:19,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:37:19,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:37:19,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:37:19,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:37:19,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:37:19,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:37:19,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:37:19,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:37:19,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:37:19,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:37:19,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:37:19,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:37:19,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:37:19,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:37:19,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:37:19,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:37:19,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:37:19,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:37:19,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:37:19,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:37:19,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:37:19,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:37:19,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:37:19,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:37:19,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:37:19,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:37:19,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:37:19,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:37:19,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:37:19,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:37:19,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:37:19,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:37:19,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:37:19,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:37:19,967 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:37:19,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:37:19,967 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:37:19,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:37:19,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:37:19,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:37:19,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:37:19,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:37:19,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:37:19,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:37:19,971 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:37:19,972 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:37:19,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:37:19,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:37:19,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:37:19,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:37:19,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:37:19,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:37:19,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:37:19,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:37:19,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:37:19,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:37:19,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:37:19,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:37:19,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:37:19,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:37:19,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:37:19,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:37:19,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:37:19,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:37:19,981 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:37:19,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:37:19,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:37:19,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:37:19,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:37:19,983 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-23 17:37:20,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:37:20,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:37:20,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:37:20,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:37:20,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:37:20,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 17:37:20,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/aee2e812f/be0745e064e04377b325fd375b533dbb/FLAG2f573737c [2021-11-23 17:37:21,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:37:21,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 17:37:21,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/aee2e812f/be0745e064e04377b325fd375b533dbb/FLAG2f573737c [2021-11-23 17:37:21,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/aee2e812f/be0745e064e04377b325fd375b533dbb [2021-11-23 17:37:21,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:37:21,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:37:21,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:37:21,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:37:21,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:37:21,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682b51b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21, skipping insertion in model container [2021-11-23 17:37:21,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:37:21,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:37:21,718 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 17:37:21,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:37:21,735 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:37:21,782 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 17:37:21,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:37:21,806 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:37:21,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21 WrapperNode [2021-11-23 17:37:21,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:37:21,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:37:21,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:37:21,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:37:21,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,870 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2021-11-23 17:37:21,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:37:21,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:37:21,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:37:21,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:37:21,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:37:21,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:37:21,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:37:21,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:37:21,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:21" (1/1) ... [2021-11-23 17:37:21,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:37:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:37:21,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:37:22,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:37:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:37:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:37:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:37:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-23 17:37:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-23 17:37:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 17:37:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:37:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:37:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:37:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:37:22,143 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:37:22,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:37:22,321 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:37:22,342 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:37:22,348 INFO L158 Benchmark]: Toolchain (without parser) took 936.79ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.8MB in the beginning and 69.1MB in the end (delta: -14.2MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-23 17:37:22,349 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:22,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.12ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.6MB in the beginning and 83.7MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:37:22,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.17ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:37:22,353 INFO L158 Benchmark]: Boogie Preprocessor took 67.73ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:22,355 INFO L158 Benchmark]: RCFGBuilder took 404.59ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 69.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:37:22,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.12ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.6MB in the beginning and 83.7MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.17ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.73ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 80.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 404.59ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 69.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:37:22,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:37:25,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:37:25,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:37:25,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:37:25,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:37:25,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:37:25,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:37:25,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:37:25,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:37:25,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:37:25,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:37:25,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:37:25,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:37:25,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:37:25,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:37:25,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:37:25,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:37:25,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:37:25,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:37:25,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:37:25,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:37:25,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:37:25,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:37:25,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:37:25,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:37:25,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:37:25,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:37:25,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:37:25,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:37:25,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:37:25,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:37:25,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:37:25,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:37:25,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:37:25,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:37:25,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:37:25,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:37:25,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:37:25,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:37:25,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:37:25,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:37:25,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:37:25,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:37:25,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:37:25,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:37:25,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:37:25,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:37:25,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:37:25,514 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:37:25,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:37:25,514 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:37:25,515 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:37:25,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:37:25,515 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:37:25,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:37:25,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:37:25,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:37:25,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:37:25,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:37:25,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:37:25,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:37:25,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:37:25,518 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:37:25,518 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:37:25,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:37:25,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:37:25,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:37:25,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:37:25,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:37:25,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:37:25,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:37:25,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:37:25,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:37:25,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:37:25,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:37:25,523 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:37:25,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:37:25,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:37:25,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:37:25,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:37:25,526 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-23 17:37:26,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:37:26,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:37:26,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:37:26,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:37:26,065 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:37:26,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 17:37:26,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/bae751f95/a6cc33459480450e92c974378c62ad86/FLAG114688e3d [2021-11-23 17:37:26,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:37:26,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 17:37:26,826 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/bae751f95/a6cc33459480450e92c974378c62ad86/FLAG114688e3d [2021-11-23 17:37:27,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/data/bae751f95/a6cc33459480450e92c974378c62ad86 [2021-11-23 17:37:27,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:37:27,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:37:27,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:37:27,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:37:27,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:37:27,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628dc8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27, skipping insertion in model container [2021-11-23 17:37:27,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:37:27,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:37:27,455 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 17:37:27,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:37:27,480 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:37:27,509 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_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 17:37:27,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:37:27,558 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:37:27,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27 WrapperNode [2021-11-23 17:37:27,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:37:27,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:37:27,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:37:27,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:37:27,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,656 INFO L137 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2021-11-23 17:37:27,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:37:27,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:37:27,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:37:27,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:37:27,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:37:27,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:37:27,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:37:27,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:37:27,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (1/1) ... [2021-11-23 17:37:27,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:37:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:37:27,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:37:27,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:37:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:37:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 17:37:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:37:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:37:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-11-23 17:37:27,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-11-23 17:37:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:37:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:37:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:37:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:37:27,974 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:37:27,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:37:28,305 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:37:28,312 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:37:28,313 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 17:37:28,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:37:28 BoogieIcfgContainer [2021-11-23 17:37:28,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:37:28,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:37:28,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:37:28,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:37:28,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:37:27" (1/3) ... [2021-11-23 17:37:28,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44a02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:37:28, skipping insertion in model container [2021-11-23 17:37:28,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:37:27" (2/3) ... [2021-11-23 17:37:28,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44a02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:37:28, skipping insertion in model container [2021-11-23 17:37:28,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:37:28" (3/3) ... [2021-11-23 17:37:28,325 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-11-23 17:37:28,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:37:28,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:37:28,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:37:28,464 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 [2021-11-23 17:37:28,464 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:37:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 17:37:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:37:28,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:37:28,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:37:28,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:37:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:37:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 369317884, now seen corresponding path program 1 times [2021-11-23 17:37:28,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:37:28,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726561129] [2021-11-23 17:37:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:37:28,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:37:28,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:37:28,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:37:28,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:37:28,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:37:28,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:37:28,886 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:37:28,894 INFO L158 Benchmark]: Toolchain (without parser) took 1733.66ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 23.3MB in the beginning and 39.5MB in the end (delta: -16.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:28,896 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.7MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:28,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.24ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 23.1MB in the beginning and 46.8MB in the end (delta: -23.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-23 17:37:28,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.75ms. Allocated memory is still 62.9MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:37:28,901 INFO L158 Benchmark]: Boogie Preprocessor took 60.41ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:28,904 INFO L158 Benchmark]: RCFGBuilder took 595.93ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 32.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:37:28,908 INFO L158 Benchmark]: TraceAbstraction took 572.66ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 39.5MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:37:28,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.7MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.24ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 23.1MB in the beginning and 46.8MB in the end (delta: -23.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.75ms. Allocated memory is still 62.9MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.41ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 595.93ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 32.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 572.66ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 39.5MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:37:28,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd7007d-1009-469a-9aa5-bb5cb7712ce9/bin/utaipan-fb15Y9Yzbl/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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable