./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V --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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:45:12,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:45:12,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:45:12,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:45:12,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:45:12,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:45:12,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:45:12,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:45:12,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:45:12,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:45:12,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:45:12,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:45:12,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:45:12,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:45:12,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:45:12,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:45:12,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:45:12,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:45:12,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:45:12,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:45:12,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:45:12,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:45:12,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:45:12,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:45:12,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:45:12,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:45:12,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:45:12,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:45:12,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:45:12,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:45:12,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:45:12,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:45:12,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:45:12,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:45:12,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:45:12,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:45:12,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:45:12,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:45:12,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:45:12,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:45:12,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:45:12,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:45:12,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:45:12,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:45:12,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:45:12,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:45:12,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:45:12,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:45:12,958 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:45:12,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:45:12,959 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:45:12,959 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:45:12,960 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:45:12,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:45:12,961 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:45:12,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:45:12,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:45:12,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:45:12,962 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:45:12,962 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:45:12,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:45:12,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:45:12,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:45:12,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:45:12,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:45:12,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:45:12,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:45:12,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:45:12,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:45:12,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:45:12,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:45:12,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:45:12,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:45:12,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:45:12,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:12,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:45:12,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:45:12,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:45:12,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:45:12,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:45:12,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:45:12,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:45:12,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:45:12,969 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2021-11-23 03:45:13,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:45:13,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:45:13,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:45:13,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:45:13,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:45:13,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-23 03:45:13,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/3522a8d17/6951b18ae46243cb996991745989ca14/FLAGe38392318 [2021-11-23 03:45:13,777 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:45:13,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-23 03:45:13,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/3522a8d17/6951b18ae46243cb996991745989ca14/FLAGe38392318 [2021-11-23 03:45:14,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/3522a8d17/6951b18ae46243cb996991745989ca14 [2021-11-23 03:45:14,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:45:14,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:45:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:14,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:45:14,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:45:14,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3084dd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14, skipping insertion in model container [2021-11-23 03:45:14,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:45:14,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:45:14,420 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-23 03:45:14,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:14,431 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:45:14,451 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-23 03:45:14,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:14,466 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:45:14,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14 WrapperNode [2021-11-23 03:45:14,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:14,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:14,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:45:14,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:45:14,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,503 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-11-23 03:45:14,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:14,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:45:14,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:45:14,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:45:14,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:45:14,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:45:14,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:45:14,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:45:14,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2021-11-23 03:45:14,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:14,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:45:14,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:45:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:45:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-23 03:45:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-23 03:45:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-11-23 03:45:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-11-23 03:45:14,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:45:14,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:45:14,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:45:14,670 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:45:14,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:45:14,755 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:45:14,781 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:45:14,781 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:45:14,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14 BoogieIcfgContainer [2021-11-23 03:45:14,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:45:14,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:45:14,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:45:14,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:45:14,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:14" (1/3) ... [2021-11-23 03:45:14,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68623488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:14, skipping insertion in model container [2021-11-23 03:45:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (2/3) ... [2021-11-23 03:45:14,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68623488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:14, skipping insertion in model container [2021-11-23 03:45:14,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14" (3/3) ... [2021-11-23 03:45:14,792 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-11-23 03:45:14,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:45:14,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:45:14,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:45:14,856 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 03:45:14,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:45:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:45:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:45:14,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:14,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:14,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1117148870, now seen corresponding path program 1 times [2021-11-23 03:45:14,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480909163] [2021-11-23 03:45:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:14,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:45:15,034 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:45:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:45:15,083 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:45:15,085 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:45:15,086 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:45:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:45:15,094 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:45:15,097 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:45:15,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:15 BoogieIcfgContainer [2021-11-23 03:45:15,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:45:15,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:45:15,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:45:15,146 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:45:15,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14" (3/4) ... [2021-11-23 03:45:15,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:45:15,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:45:15,150 INFO L158 Benchmark]: Toolchain (without parser) took 997.08ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.9MB in the beginning and 86.9MB in the end (delta: -33.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:45:15,151 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 70.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:45:15,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.21ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 65.8MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:45:15,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.56ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:45:15,157 INFO L158 Benchmark]: Boogie Preprocessor took 20.48ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 63.4MB in the end (delta: 757.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:45:15,161 INFO L158 Benchmark]: RCFGBuilder took 258.68ms. Allocated memory is still 90.2MB. Free memory was 63.4MB in the beginning and 53.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:45:15,163 INFO L158 Benchmark]: TraceAbstraction took 338.81ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 38.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:45:15,164 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 86.9MB in the end (delta: 294.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:45:15,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 70.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.21ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 65.8MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.56ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.48ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 63.4MB in the end (delta: 757.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.68ms. Allocated memory is still 90.2MB. Free memory was 63.4MB in the beginning and 53.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 338.81ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 38.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 86.9MB in the end (delta: 294.1kB). 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 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=50] [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) VAL [f(IN)=51, IN=50] [L42] CALL, EXPR fp(IN) VAL [\old(x)=50] [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) VAL [f(IN)=51, fp(IN)=54, IN=50] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=55] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [f(x)=49, IN=50, x=55] [L44] CALL, EXPR fp(x) VAL [\old(x)=55] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [f(x)=49, fp(x)=57, IN=50, x=55] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=56] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) VAL [f(x)=53, IN=50, x=56] [L46] CALL, EXPR fp(x) VAL [\old(x)=56] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=52, IN=50, x=56] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=50] [L51] reach_error() VAL [IN=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:45:15,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V --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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:45:17,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:45:17,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:45:17,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:45:17,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:45:17,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:45:17,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:45:17,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:45:17,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:45:17,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:45:17,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:45:17,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:45:17,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:45:17,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:45:17,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:45:17,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:45:17,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:45:17,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:45:17,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:45:17,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:45:17,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:45:17,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:45:17,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:45:17,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:45:17,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:45:17,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:45:17,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:45:17,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:45:17,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:45:17,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:45:17,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:45:17,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:45:17,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:45:17,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:45:17,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:45:17,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:45:17,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:45:17,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:45:17,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:45:17,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:45:17,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:45:17,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:45:17,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:45:17,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:45:17,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:45:17,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:45:17,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:45:17,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:45:17,981 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:45:17,982 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:45:17,982 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:45:17,982 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:45:17,983 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:45:17,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:45:17,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:45:17,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:45:17,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:45:17,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:45:17,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:45:17,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:45:17,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:45:17,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:45:17,987 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:45:17,988 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:45:17,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:45:17,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:45:17,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:45:17,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:45:17,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:45:17,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:45:17,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:45:17,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:17,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:45:17,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:45:17,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:45:17,991 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:45:17,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:45:17,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:45:17,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:45:17,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:45:17,993 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2021-11-23 03:45:18,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:45:18,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:45:18,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:45:18,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:45:18,465 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:45:18,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-23 03:45:18,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/5d17b3a55/a6ad2180083d4aea9f140c3880746502/FLAG436b7dbe9 [2021-11-23 03:45:19,119 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:45:19,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-23 03:45:19,130 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/5d17b3a55/a6ad2180083d4aea9f140c3880746502/FLAG436b7dbe9 [2021-11-23 03:45:19,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/data/5d17b3a55/a6ad2180083d4aea9f140c3880746502 [2021-11-23 03:45:19,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:45:19,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:45:19,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:19,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:45:19,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:45:19,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7597a3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19, skipping insertion in model container [2021-11-23 03:45:19,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:45:19,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:45:19,716 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-23 03:45:19,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:19,733 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:45:19,757 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_340c6de2-fc20-4b44-a690-d16d36ad5a7f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-23 03:45:19,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:19,783 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:45:19,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19 WrapperNode [2021-11-23 03:45:19,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:19,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:19,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:45:19,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:45:19,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,848 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-11-23 03:45:19,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:19,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:45:19,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:45:19,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:45:19,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:45:19,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:45:19,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:45:19,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:45:19,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (1/1) ... [2021-11-23 03:45:19,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:19,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:45:19,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:45:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:45:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-23 03:45:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-23 03:45:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:45:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-11-23 03:45:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-11-23 03:45:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:45:19,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:45:20,087 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:45:20,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:45:30,817 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:45:30,824 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:45:30,825 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:45:30,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:30 BoogieIcfgContainer [2021-11-23 03:45:30,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:45:30,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:45:30,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:45:30,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:45:30,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:19" (1/3) ... [2021-11-23 03:45:30,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cee06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:30, skipping insertion in model container [2021-11-23 03:45:30,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:19" (2/3) ... [2021-11-23 03:45:30,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796cee06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:30, skipping insertion in model container [2021-11-23 03:45:30,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:30" (3/3) ... [2021-11-23 03:45:30,841 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-11-23 03:45:30,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:45:30,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:45:30,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:45:30,910 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 03:45:30,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:45:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:45:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:45:30,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:30,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:30,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2021-11-23 03:45:31,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:45:31,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759966600] [2021-11-23 03:45:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:31,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:45:31,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:45:31,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:45:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:45:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:35,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:45:35,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:45:35,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:45:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:45:35,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:45:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759966600] [2021-11-23 03:45:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759966600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:35,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:45:35,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652256695] [2021-11-23 03:45:35,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:35,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:45:35,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:45:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:45:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:45:35,590 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-23 03:45:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:35,612 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-11-23 03:45:35,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:45:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 33 [2021-11-23 03:45:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:35,623 INFO L225 Difference]: With dead ends: 49 [2021-11-23 03:45:35,623 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 03:45:35,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:45:35,631 INFO L933 BasicCegarLoop]: 29 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, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:35,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:45:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 03:45:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-23 03:45:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:45:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-23 03:45:35,674 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2021-11-23 03:45:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:35,674 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-23 03:45:35,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-23 03:45:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-23 03:45:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:45:35,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:35,678 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:35,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:45:35,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:45:35,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2021-11-23 03:45:35,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:45:35,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143188117] [2021-11-23 03:45:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:35,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:45:35,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:45:35,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:45:35,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340c6de2-fc20-4b44-a690-d16d36ad5a7f/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:53:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:53:00,906 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.