./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta --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 3d5c9a042714ec99fe52d86211c8b4da5d2ba3d5759e35d6939f68d62f0ae59d --- 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-dbf71c6-m [2022-10-17 17:39:29,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:29,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:29,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:29,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:29,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:29,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:29,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:29,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:29,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:29,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:29,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:29,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:29,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:29,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:29,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:29,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:29,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:29,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:29,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:29,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:29,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:29,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:29,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:29,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:29,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:29,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:29,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:29,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:29,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:29,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:29,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:29,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:29,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:29,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:29,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:29,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:29,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:29,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:29,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:29,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:29,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:39:29,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:29,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:29,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:29,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:29,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:29,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:29,738 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:29,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:29,739 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:29,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:29,739 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:29,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:29,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:29,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:29,740 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:29,740 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:29,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:29,741 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:29,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:29,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:29,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:29,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:29,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:29,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:29,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:29,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:29,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:29,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:29,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:29,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:29,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:29,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:29,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:29,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:29,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:29,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:29,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:29,747 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:29,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:29,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:29,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:29,748 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_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d5c9a042714ec99fe52d86211c8b4da5d2ba3d5759e35d6939f68d62f0ae59d [2022-10-17 17:39:30,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:30,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:30,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:30,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:30,040 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:30,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2022-10-17 17:39:30,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/ab595af83/9eb0d32c076f4c1085b5dc0a27d08245/FLAG079648d4c [2022-10-17 17:39:30,649 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:30,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2022-10-17 17:39:30,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/ab595af83/9eb0d32c076f4c1085b5dc0a27d08245/FLAG079648d4c [2022-10-17 17:39:31,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/ab595af83/9eb0d32c076f4c1085b5dc0a27d08245 [2022-10-17 17:39:31,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:31,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:31,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:31,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:31,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:31,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e4ded9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31, skipping insertion in model container [2022-10-17 17:39:31,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:31,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:31,293 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_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1764,1777] [2022-10-17 17:39:31,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:31,305 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:31,324 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_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1764,1777] [2022-10-17 17:39:31,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:31,338 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:31,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31 WrapperNode [2022-10-17 17:39:31,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:31,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:31,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:31,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:31,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,373 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-10-17 17:39:31,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:31,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:31,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:31,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:31,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:31,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:31,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:31,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:31,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:31,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:31,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-17 17:39:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-17 17:39:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-10-17 17:39:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-10-17 17:39:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:31,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:31,562 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:31,565 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:31,734 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:31,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:31,812 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:31,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:31 BoogieIcfgContainer [2022-10-17 17:39:31,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:31,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:31,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:31,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:31,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:31" (1/3) ... [2022-10-17 17:39:31,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6014970e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:31, skipping insertion in model container [2022-10-17 17:39:31,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31" (2/3) ... [2022-10-17 17:39:31,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6014970e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:31, skipping insertion in model container [2022-10-17 17:39:31,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:31" (3/3) ... [2022-10-17 17:39:31,846 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2022-10-17 17:39:31,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:31,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:31,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:32,001 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;@17899a4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:32,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:32,028 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) [2022-10-17 17:39:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 17:39:32,038 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:32,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:32,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1117148870, now seen corresponding path program 1 times [2022-10-17 17:39:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:32,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486431765] [2022-10-17 17:39:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:39:32,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:39:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:39:32,336 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:39:32,338 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:39:32,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:39:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:32,350 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 17:39:32,356 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:39:32,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:39:32 BoogieIcfgContainer [2022-10-17 17:39:32,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:39:32,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:39:32,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:39:32,403 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:39:32,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:31" (3/4) ... [2022-10-17 17:39:32,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:39:32,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:39:32,413 INFO L158 Benchmark]: Toolchain (without parser) took 1377.24ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 51.1MB in the end (delta: 25.7MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-10-17 17:39:32,415 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:32,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.61ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 81.4MB in the end (delta: -4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:39:32,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:39:32,418 INFO L158 Benchmark]: Boogie Preprocessor took 22.96ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 78.9MB in the end (delta: 772.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:32,423 INFO L158 Benchmark]: RCFGBuilder took 416.71ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 67.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 17:39:32,424 INFO L158 Benchmark]: TraceAbstraction took 582.12ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 52.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 17:39:32,426 INFO L158 Benchmark]: Witness Printer took 9.29ms. Allocated memory is still 109.1MB. Free memory was 52.1MB in the beginning and 51.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:32,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.61ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 81.4MB in the end (delta: -4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 80.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.96ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 78.9MB in the end (delta: 772.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.71ms. Allocated memory is still 109.1MB. Free memory was 78.5MB in the beginning and 67.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 582.12ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 52.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 9.29ms. Allocated memory is still 109.1MB. Free memory was 52.1MB in the beginning and 51.1MB in the end (delta: 1.0MB). 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 > -2.0f && IN < 2.0f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L42] CALL, EXPR f(IN) 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; [L42] RET, EXPR f(IN) VAL [f(IN)=56, IN=55] [L42] CALL, EXPR fp(IN) 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; [L42] RET, EXPR fp(IN) VAL [f(IN)=56, fp(IN)=59, IN=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=60] [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)=53, IN=55, x=60] [L44] CALL, EXPR fp(x) VAL [\old(x)=60] [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)=53, fp(x)=61, IN=55, x=60] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [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)=58, IN=55, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [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)=58, fp(x)=57, IN=55, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=55] [L51] reach_error() VAL [IN=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 3, 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=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, 0.1s 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 [2022-10-17 17:39:32,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta --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 3d5c9a042714ec99fe52d86211c8b4da5d2ba3d5759e35d6939f68d62f0ae59d --- 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-dbf71c6-m [2022-10-17 17:39:35,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:35,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:35,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:35,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:35,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:35,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:35,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:35,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:35,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:35,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:35,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:35,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:35,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:35,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:35,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:35,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:35,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:35,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:35,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:35,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:35,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:35,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:35,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:35,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:35,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:35,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:35,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:35,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:35,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:35,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:35,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:35,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:35,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:35,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:35,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:35,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:35,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:35,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:35,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:35,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:35,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:39:35,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:35,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:35,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:35,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:35,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:35,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:35,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:35,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:35,300 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:35,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:35,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:35,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:35,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:35,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:35,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:35,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:35,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:35,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:35,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:35,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:39:35,306 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:39:35,306 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:39:35,306 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:35,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:35,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:35,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:35,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:35,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:39:35,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:35,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:35,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:35,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:35,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:35,310 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:39:35,310 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:39:35,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:35,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:35,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:39:35,311 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_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d5c9a042714ec99fe52d86211c8b4da5d2ba3d5759e35d6939f68d62f0ae59d [2022-10-17 17:39:35,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:35,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:35,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:35,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:35,771 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:35,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2022-10-17 17:39:35,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/0a4a86bdb/94bd799214ac43619634a527ed841784/FLAG1157c61ea [2022-10-17 17:39:36,352 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:36,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2022-10-17 17:39:36,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/0a4a86bdb/94bd799214ac43619634a527ed841784/FLAG1157c61ea [2022-10-17 17:39:36,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/data/0a4a86bdb/94bd799214ac43619634a527ed841784 [2022-10-17 17:39:36,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:36,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:36,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:36,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:36,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:36,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:36" (1/1) ... [2022-10-17 17:39:36,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11828c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:36, skipping insertion in model container [2022-10-17 17:39:36,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:36" (1/1) ... [2022-10-17 17:39:36,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:36,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:36,960 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_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1764,1777] [2022-10-17 17:39:36,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:36,982 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:37,023 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_e79296c6-cae4-47d3-925d-0162671e46b7/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1764,1777] [2022-10-17 17:39:37,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:37,044 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:37,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37 WrapperNode [2022-10-17 17:39:37,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:37,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:37,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:37,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:37,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,115 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-10-17 17:39:37,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:37,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:37,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:37,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:37,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:37,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:37,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:37,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:37,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (1/1) ... [2022-10-17 17:39:37,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:37,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:37,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-17 17:39:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-17 17:39:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:39:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-10-17 17:39:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-10-17 17:39:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:37,338 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:37,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:46,684 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:46,691 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:46,691 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:46,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:46 BoogieIcfgContainer [2022-10-17 17:39:46,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:46,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:46,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:46,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:46,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:36" (1/3) ... [2022-10-17 17:39:46,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfd1283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:46, skipping insertion in model container [2022-10-17 17:39:46,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:37" (2/3) ... [2022-10-17 17:39:46,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfd1283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:46, skipping insertion in model container [2022-10-17 17:39:46,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:46" (3/3) ... [2022-10-17 17:39:46,704 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2022-10-17 17:39:46,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:46,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:46,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:46,796 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;@5eedc75d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:46,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:46,801 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) [2022-10-17 17:39:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 17:39:46,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:46,812 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:39:46,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-10-17 17:39:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:39:46,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063400087] [2022-10-17 17:39:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:46,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:39:46,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:39:46,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:39:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:39:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:50,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:39:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 17:39:50,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:39:50,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:39:50,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063400087] [2022-10-17 17:39:50,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063400087] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:50,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:50,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927607787] [2022-10-17 17:39:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:50,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:39:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:39:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:39:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:50,432 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 17:39:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:50,453 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-10-17 17:39:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:39:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-10-17 17:39:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:50,463 INFO L225 Difference]: With dead ends: 49 [2022-10-17 17:39:50,463 INFO L226 Difference]: Without dead ends: 22 [2022-10-17 17:39:50,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:50,470 INFO L413 NwaCegarLoop]: 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 [2022-10-17 17:39:50,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:39:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-17 17:39:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-17 17:39:50,505 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) [2022-10-17 17:39:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-10-17 17:39:50,508 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-10-17 17:39:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:50,508 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-10-17 17:39:50,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 17:39:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-10-17 17:39:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 17:39:50,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:50,511 INFO L195 NwaCegarLoop]: 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] [2022-10-17 17:39:50,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 17:39:50,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:39:50,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-10-17 17:39:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:39:50,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158424039] [2022-10-17 17:39:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:50,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:39:50,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:39:50,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:39:50,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e79296c6-cae4-47d3-925d-0162671e46b7/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process