./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur --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 1bf653052dcd565496dd2bb2fc39dec2e1795b1b77fb1f137fb0bb16a87a196d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:40:37,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:40:37,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:40:37,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:40:37,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:40:37,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:40:37,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:40:37,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:40:37,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:40:37,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:40:37,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:40:37,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:40:37,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:40:37,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:40:37,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:40:37,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:40:37,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:40:37,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:40:37,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:40:37,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:40:37,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:40:37,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:40:37,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:40:37,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:40:37,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:40:37,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:40:37,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:40:37,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:40:37,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:40:37,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:40:37,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:40:37,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:40:37,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:40:37,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:40:37,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:40:37,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:40:37,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:40:37,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:40:37,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:40:37,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:40:37,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:40:37,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:40:38,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:40:38,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:40:38,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:40:38,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:40:38,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:40:38,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:40:38,005 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:40:38,006 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:40:38,006 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:40:38,006 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:40:38,007 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:40:38,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:40:38,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:40:38,008 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:40:38,009 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:40:38,009 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:40:38,009 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:40:38,009 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:40:38,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:40:38,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:40:38,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:40:38,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:40:38,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:40:38,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:40:38,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:40:38,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:40:38,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:40:38,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:40:38,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:40:38,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:40:38,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:40:38,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:40:38,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:38,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:40:38,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:40:38,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:40:38,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:40:38,032 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:40:38,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:40:38,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:40:38,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:40:38,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bf653052dcd565496dd2bb2fc39dec2e1795b1b77fb1f137fb0bb16a87a196d [2022-11-25 23:40:38,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:40:38,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:40:38,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:40:38,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:40:38,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:40:38,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/floats-cdfpl/newton_1_1.i [2022-11-25 23:40:41,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:40:41,639 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:40:41,639 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i [2022-11-25 23:40:41,646 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/275c9d2e8/0b8cbe3e51f649e39b2d61ea70ee2414/FLAGaf16d0912 [2022-11-25 23:40:41,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/275c9d2e8/0b8cbe3e51f649e39b2d61ea70ee2414 [2022-11-25 23:40:41,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:40:41,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:40:41,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:41,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:40:41,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:40:41,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@930228c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41, skipping insertion in model container [2022-11-25 23:40:41,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:40:41,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:40:41,852 WARN L237 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_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i[1722,1735] [2022-11-25 23:40:41,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:41,865 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:40:41,879 WARN L237 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_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i[1722,1735] [2022-11-25 23:40:41,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:41,893 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:40:41,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41 WrapperNode [2022-11-25 23:40:41,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:41,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:41,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:40:41,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:40:41,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,923 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2022-11-25 23:40:41,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:41,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:40:41,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:40:41,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:40:41,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:40:41,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:40:41,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:40:41,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:40:41,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (1/1) ... [2022-11-25 23:40:41,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:40:41,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:40:41,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:40:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:40:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:40:42,126 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:40:42,128 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:40:42,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:40:42,344 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:40:42,344 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:40:42,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:42 BoogieIcfgContainer [2022-11-25 23:40:42,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:40:42,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:40:42,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:40:42,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:40:42,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:40:41" (1/3) ... [2022-11-25 23:40:42,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b01414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:42, skipping insertion in model container [2022-11-25 23:40:42,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:41" (2/3) ... [2022-11-25 23:40:42,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b01414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:42, skipping insertion in model container [2022-11-25 23:40:42,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:42" (3/3) ... [2022-11-25 23:40:42,356 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_1.i [2022-11-25 23:40:42,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:40:42,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:40:42,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:40:42,505 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@720c6a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:40:42,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:40:42,513 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) [2022-11-25 23:40:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 23:40:42,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:42,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 23:40:42,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:40:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2022-11-25 23:40:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:40:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329105094] [2022-11-25 23:40:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:40:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:40:42,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:40:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:40:42,750 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:40:42,754 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:40:42,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:40:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:40:42,763 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:40:42,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:40:42,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:40:42 BoogieIcfgContainer [2022-11-25 23:40:42,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:40:42,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:40:42,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:40:42,797 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:40:42,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:42" (3/4) ... [2022-11-25 23:40:42,803 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:40:42,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:40:42,805 INFO L158 Benchmark]: Toolchain (without parser) took 1141.58ms. Allocated memory is still 148.9MB. Free memory was 103.7MB in the beginning and 65.4MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-25 23:40:42,805 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 148.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:40:42,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.51ms. Allocated memory is still 148.9MB. Free memory was 103.7MB in the beginning and 93.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:40:42,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.80ms. Allocated memory is still 148.9MB. Free memory was 93.2MB in the beginning and 91.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:40:42,808 INFO L158 Benchmark]: Boogie Preprocessor took 17.79ms. Allocated memory is still 148.9MB. Free memory was 91.6MB in the beginning and 90.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:40:42,813 INFO L158 Benchmark]: RCFGBuilder took 403.72ms. Allocated memory is still 148.9MB. Free memory was 90.6MB in the beginning and 79.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:40:42,814 INFO L158 Benchmark]: TraceAbstraction took 445.11ms. Allocated memory is still 148.9MB. Free memory was 79.1MB in the beginning and 65.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:40:42,814 INFO L158 Benchmark]: Witness Printer took 7.16ms. Allocated memory is still 148.9MB. Free memory was 65.9MB in the beginning and 65.4MB in the end (delta: 517.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:40:42,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 148.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.51ms. Allocated memory is still 148.9MB. Free memory was 103.7MB in the beginning and 93.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.80ms. Allocated memory is still 148.9MB. Free memory was 93.2MB in the beginning and 91.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.79ms. Allocated memory is still 148.9MB. Free memory was 91.6MB in the beginning and 90.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 403.72ms. Allocated memory is still 148.9MB. Free memory was 90.6MB in the beginning and 79.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 445.11ms. Allocated memory is still 148.9MB. Free memory was 79.1MB in the beginning and 65.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 7.16ms. Allocated memory is still 148.9MB. Free memory was 65.9MB in the beginning and 65.4MB in the end (delta: 517.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: 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 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , 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 [2022-11-25 23:40:42,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur --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 1bf653052dcd565496dd2bb2fc39dec2e1795b1b77fb1f137fb0bb16a87a196d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:40:45,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:40:45,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:40:45,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:40:45,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:40:45,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:40:45,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:40:45,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:40:45,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:40:45,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:40:45,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:40:45,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:40:45,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:40:45,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:40:45,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:40:45,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:40:45,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:40:45,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:40:45,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:40:45,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:40:45,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:40:45,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:40:45,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:40:45,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:40:45,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:40:45,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:40:45,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:40:45,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:40:45,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:40:45,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:40:45,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:40:45,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:40:45,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:40:45,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:40:45,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:40:45,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:40:45,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:40:45,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:40:45,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:40:45,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:40:45,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:40:45,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-25 23:40:45,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:40:45,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:40:45,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:40:45,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:40:45,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:40:45,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:40:45,434 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:40:45,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:40:45,435 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:40:45,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:40:45,435 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:40:45,435 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:40:45,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:40:45,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:40:45,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:40:45,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:40:45,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:40:45,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:40:45,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:40:45,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:40:45,438 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:40:45,438 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:40:45,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:40:45,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:40:45,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:40:45,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:40:45,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:40:45,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:40:45,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:40:45,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:45,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:40:45,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:40:45,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:40:45,441 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:40:45,441 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:40:45,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:40:45,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:40:45,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:40:45,441 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_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bf653052dcd565496dd2bb2fc39dec2e1795b1b77fb1f137fb0bb16a87a196d [2022-11-25 23:40:45,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:40:45,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:40:45,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:40:45,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:40:45,836 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:40:45,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/floats-cdfpl/newton_1_1.i [2022-11-25 23:40:48,863 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:40:49,060 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:40:49,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i [2022-11-25 23:40:49,067 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/ff47cf74c/6259b3f68a1e4ed1abdb54ca128ca4e3/FLAG888309222 [2022-11-25 23:40:49,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/data/ff47cf74c/6259b3f68a1e4ed1abdb54ca128ca4e3 [2022-11-25 23:40:49,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:40:49,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:40:49,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:49,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:40:49,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:40:49,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569ef5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49, skipping insertion in model container [2022-11-25 23:40:49,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:40:49,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:40:49,281 WARN L237 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_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i[1722,1735] [2022-11-25 23:40:49,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:49,304 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:40:49,342 WARN L237 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_cba8a399-897d-4e83-ae03-50d1cd0ff912/sv-benchmarks/c/floats-cdfpl/newton_1_1.i[1722,1735] [2022-11-25 23:40:49,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:49,361 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:40:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49 WrapperNode [2022-11-25 23:40:49,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:49,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:49,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:40:49,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:40:49,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,436 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2022-11-25 23:40:49,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:49,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:40:49,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:40:49,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:40:49,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:40:49,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:40:49,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:40:49,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:40:49,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (1/1) ... [2022-11-25 23:40:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:49,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:40:49,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:40:49,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:40:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:40:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:40:49,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:40:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:40:49,693 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:40:49,696 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:40:56,498 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:40:56,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:40:56,504 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:40:56,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:56 BoogieIcfgContainer [2022-11-25 23:40:56,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:40:56,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:40:56,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:40:56,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:40:56,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:40:49" (1/3) ... [2022-11-25 23:40:56,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd20ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:56, skipping insertion in model container [2022-11-25 23:40:56,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:49" (2/3) ... [2022-11-25 23:40:56,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd20ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:56, skipping insertion in model container [2022-11-25 23:40:56,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:56" (3/3) ... [2022-11-25 23:40:56,515 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_1.i [2022-11-25 23:40:56,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:40:56,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:40:56,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:40:56,582 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@569f23c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:40:56,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:40:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-11-25 23:40:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:40:56,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:56,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:56,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:40:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2022-11-25 23:40:56,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:40:56,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652113248] [2022-11-25 23:40:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:40:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:40:56,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:40:56,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:40:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:40:57,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 23:40:57,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:40:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:40:57,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:40:57,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:40:57,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652113248] [2022-11-25 23:40:57,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652113248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:40:57,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:40:57,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:40:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289187547] [2022-11-25 23:40:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:40:57,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:40:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:40:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:40:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:40:57,983 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:40:58,000 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-25 23:40:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:40:58,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:40:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:40:58,015 INFO L225 Difference]: With dead ends: 23 [2022-11-25 23:40:58,015 INFO L226 Difference]: Without dead ends: 9 [2022-11-25 23:40:58,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:40:58,028 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:40:58,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:40:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-25 23:40:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-25 23:40:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-11-25 23:40:58,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-11-25 23:40:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:40:58,056 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-11-25 23:40:58,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-11-25 23:40:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:40:58,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:58,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:58,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 23:40:58,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:40:58,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:40:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2022-11-25 23:40:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:40:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13622844] [2022-11-25 23:40:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:40:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:40:58,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:40:58,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8a399-897d-4e83-ae03-50d1cd0ff912/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process