./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW --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 ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa --- 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-4e7fbc6 [2022-11-23 14:11:21,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:11:21,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:11:21,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:11:21,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:11:21,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:11:21,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:11:21,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:11:21,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:11:21,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:11:21,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:11:21,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:11:21,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:11:21,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:11:21,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:11:21,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:11:21,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:11:21,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:11:21,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:11:21,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:11:21,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:11:21,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:11:22,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:11:22,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:11:22,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:11:22,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:11:22,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:11:22,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:11:22,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:11:22,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:11:22,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:11:22,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:11:22,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:11:22,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:11:22,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:11:22,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:11:22,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:11:22,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:11:22,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:11:22,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:11:22,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:11:22,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:11:22,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:11:22,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:11:22,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:11:22,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:11:22,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:11:22,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:11:22,065 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:11:22,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:11:22,066 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:11:22,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:11:22,067 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:11:22,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:11:22,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:11:22,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:11:22,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:11:22,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:11:22,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:11:22,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:11:22,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:11:22,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:11:22,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:11:22,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:11:22,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:11:22,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:11:22,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:11:22,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:11:22,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:11:22,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:11:22,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:11:22,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:11:22,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:11:22,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:11:22,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:22,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:11:22,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:11:22,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:11:22,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:11:22,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:11:22,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:11:22,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:11:22,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:11:22,077 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_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa [2022-11-23 14:11:22,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:11:22,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:11:22,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:11:22,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:11:22,429 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:11:22,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2022-11-23 14:11:25,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:11:25,773 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:11:25,774 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2022-11-23 14:11:25,780 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/78036800e/7c0ca24a364d4568b45aa777e079e668/FLAG40ee9379e [2022-11-23 14:11:25,803 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/78036800e/7c0ca24a364d4568b45aa777e079e668 [2022-11-23 14:11:25,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:11:25,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:11:25,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:25,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:11:25,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:11:25,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:25" (1/1) ... [2022-11-23 14:11:25,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe71c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:25, skipping insertion in model container [2022-11-23 14:11:25,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:25" (1/1) ... [2022-11-23 14:11:25,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:11:25,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:11:26,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1722,1735] [2022-11-23 14:11:26,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:26,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:11:26,072 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1722,1735] [2022-11-23 14:11:26,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:26,087 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:11:26,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26 WrapperNode [2022-11-23 14:11:26,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:26,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:26,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:11:26,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:11:26,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,121 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2022-11-23 14:11:26,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:26,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:11:26,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:11:26,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:11:26,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:11:26,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:11:26,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:11:26,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:11:26,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (1/1) ... [2022-11-23 14:11:26,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:26,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:26,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:11:26,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:11:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:11:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:11:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:11:26,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:11:26,309 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:11:26,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:11:26,460 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:11:26,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:11:26,499 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:11:26,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:26 BoogieIcfgContainer [2022-11-23 14:11:26,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:11:26,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:11:26,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:11:26,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:11:26,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:25" (1/3) ... [2022-11-23 14:11:26,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a39459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:26, skipping insertion in model container [2022-11-23 14:11:26,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:26" (2/3) ... [2022-11-23 14:11:26,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a39459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:26, skipping insertion in model container [2022-11-23 14:11:26,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:26" (3/3) ... [2022-11-23 14:11:26,512 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2022-11-23 14:11:26,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:11:26,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:11:26,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:11:26,596 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;@6c32db8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:11:26,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:11:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:11:26,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:26,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:11:26,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2022-11-23 14:11:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462194771] [2022-11-23 14:11:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:11:26,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:11:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:11:26,762 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:11:26,764 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:11:26,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:11:26,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:11:26,775 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:11:26,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:11:26,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:11:26 BoogieIcfgContainer [2022-11-23 14:11:26,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:11:26,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:11:26,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:11:26,811 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:11:26,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:26" (3/4) ... [2022-11-23 14:11:26,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:11:26,819 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:11:26,821 INFO L158 Benchmark]: Toolchain (without parser) took 1008.73ms. Allocated memory is still 157.3MB. Free memory was 112.7MB in the beginning and 74.0MB in the end (delta: 38.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,822 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:11:26,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.84ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 102.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.93ms. Allocated memory is still 157.3MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,825 INFO L158 Benchmark]: Boogie Preprocessor took 21.09ms. Allocated memory is still 157.3MB. Free memory was 100.6MB in the beginning and 99.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,831 INFO L158 Benchmark]: RCFGBuilder took 357.67ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 88.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,834 INFO L158 Benchmark]: TraceAbstraction took 302.68ms. Allocated memory is still 157.3MB. Free memory was 87.5MB in the beginning and 74.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,834 INFO L158 Benchmark]: Witness Printer took 9.00ms. Allocated memory is still 157.3MB. Free memory was 74.6MB in the beginning and 74.0MB in the end (delta: 588.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:11:26,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.84ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 102.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.93ms. Allocated memory is still 157.3MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.09ms. Allocated memory is still 157.3MB. Free memory was 100.6MB in the beginning and 99.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.67ms. Allocated memory is still 157.3MB. Free memory was 99.2MB in the beginning and 88.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 302.68ms. Allocated memory is still 157.3MB. Free memory was 87.5MB in the beginning and 74.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 9.00ms. Allocated memory is still 157.3MB. Free memory was 74.6MB in the beginning and 74.0MB in the end (delta: 588.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:11:26,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW --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 ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa --- 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-4e7fbc6 [2022-11-23 14:11:29,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:11:29,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:11:29,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:11:29,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:11:29,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:11:29,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:11:29,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:11:29,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:11:29,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:11:29,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:11:29,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:11:29,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:11:29,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:11:29,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:11:29,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:11:29,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:11:29,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:11:29,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:11:29,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:11:29,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:11:29,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:11:29,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:11:29,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:11:29,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:11:29,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:11:29,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:11:29,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:11:29,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:11:29,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:11:29,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:11:29,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:11:29,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:11:29,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:11:29,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:11:29,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:11:29,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:11:29,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:11:29,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:11:29,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:11:29,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:11:29,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 14:11:29,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:11:29,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:11:29,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:11:29,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:11:29,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:11:29,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:11:29,521 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:11:29,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:11:29,521 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:11:29,522 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:11:29,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:11:29,522 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:11:29,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:11:29,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:11:29,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:11:29,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:11:29,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:11:29,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:11:29,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:11:29,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:11:29,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:11:29,525 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:11:29,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:11:29,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:11:29,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:11:29,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:11:29,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:11:29,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:11:29,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:11:29,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:29,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:11:29,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:11:29,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:11:29,528 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:11:29,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:11:29,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:11:29,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:11:29,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:11:29,529 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_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa [2022-11-23 14:11:29,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:11:29,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:11:29,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:11:29,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:11:29,910 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:11:29,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2022-11-23 14:11:32,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:11:33,146 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:11:33,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2022-11-23 14:11:33,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/4da5b16bf/8db709c32e6c4f5f99eeaaa2bb561051/FLAG2db9246d2 [2022-11-23 14:11:33,172 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/data/4da5b16bf/8db709c32e6c4f5f99eeaaa2bb561051 [2022-11-23 14:11:33,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:11:33,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:11:33,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:33,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:11:33,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:11:33,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cce9157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33, skipping insertion in model container [2022-11-23 14:11:33,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:11:33,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:11:33,389 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1722,1735] [2022-11-23 14:11:33,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:33,416 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:11:33,451 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1722,1735] [2022-11-23 14:11:33,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:11:33,474 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:11:33,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33 WrapperNode [2022-11-23 14:11:33,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:11:33,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:33,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:11:33,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:11:33,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,535 INFO L138 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2022-11-23 14:11:33,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:11:33,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:11:33,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:11:33,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:11:33,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,585 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:11:33,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:11:33,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:11:33,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:11:33,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (1/1) ... [2022-11-23 14:11:33,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:11:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:33,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:11:33,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:11:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:11:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:11:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:11:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:11:33,804 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:11:33,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:11:39,877 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:11:39,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:11:39,888 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:11:39,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:39 BoogieIcfgContainer [2022-11-23 14:11:39,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:11:39,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:11:39,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:11:39,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:11:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:33" (1/3) ... [2022-11-23 14:11:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687da376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:39, skipping insertion in model container [2022-11-23 14:11:39,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:33" (2/3) ... [2022-11-23 14:11:39,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687da376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:39, skipping insertion in model container [2022-11-23 14:11:39,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:39" (3/3) ... [2022-11-23 14:11:39,910 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2022-11-23 14:11:39,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:11:39,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:11:40,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:11:40,006 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;@27f30bda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:11:40,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:11:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:11:40,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:40,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:40,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2022-11-23 14:11:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:11:40,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459930041] [2022-11-23 14:11:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:40,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:11:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:11:40,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:11:40,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:11:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:41,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:11:41,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:11:41,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:11:41,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:11:41,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459930041] [2022-11-23 14:11:41,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459930041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:41,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:41,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:11:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065874957] [2022-11-23 14:11:41,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:41,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:11:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:11:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:11:41,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:11:41,386 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:41,399 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-23 14:11:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:11:41,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:11:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:41,408 INFO L225 Difference]: With dead ends: 23 [2022-11-23 14:11:41,408 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 14:11:41,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:11:41,414 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:41,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:11:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 14:11:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-23 14:11:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-11-23 14:11:41,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-11-23 14:11:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:41,447 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-11-23 14:11:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:11:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-11-23 14:11:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:11:41,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:41,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:41,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:41,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:11:41,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2022-11-23 14:11:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:11:41,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374804628] [2022-11-23 14:11:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:41,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:11:41,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:11:41,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:11:41,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:11:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:11:50,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:12:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:12:12,604 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:12:12,605 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:12:12,607 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:12:12,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:12:12,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:12:12,812 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:12:12,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:12:12,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:12:12 BoogieIcfgContainer [2022-11-23 14:12:12,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:12:12,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:12:12,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:12:12,860 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:12:12,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:39" (3/4) ... [2022-11-23 14:12:12,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 14:12:12,966 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:12:12,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:12:12,972 INFO L158 Benchmark]: Toolchain (without parser) took 39795.14ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 62.3MB in the end (delta: -758.3kB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,972 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:12:12,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.25ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 50.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.43ms. Allocated memory is still 83.9MB. Free memory was 50.3MB in the beginning and 48.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,976 INFO L158 Benchmark]: Boogie Preprocessor took 58.64ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 47.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,977 INFO L158 Benchmark]: RCFGBuilder took 6293.43ms. Allocated memory is still 83.9MB. Free memory was 47.2MB in the beginning and 56.9MB in the end (delta: -9.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,977 INFO L158 Benchmark]: TraceAbstraction took 32967.32ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 60.1MB in the end (delta: -3.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,978 INFO L158 Benchmark]: Witness Printer took 111.17ms. Allocated memory is still 83.9MB. Free memory was 60.1MB in the beginning and 62.3MB in the end (delta: -2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:12:12,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.25ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 50.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.43ms. Allocated memory is still 83.9MB. Free memory was 50.3MB in the beginning and 48.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.64ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 47.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6293.43ms. Allocated memory is still 83.9MB. Free memory was 47.2MB in the beginning and 56.9MB in the end (delta: -9.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * TraceAbstraction took 32967.32ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 60.1MB in the end (delta: -3.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 111.17ms. Allocated memory is still 83.9MB. Free memory was 60.1MB in the beginning and 62.3MB in the end (delta: -2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 51]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) VAL [cond=1, unknown-#in~cond-unknown=1] [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\result=-0.9330898523330688, unknown-#in~x-unknown=-1.1990375518798828, x=-1.1990375518798828] [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\result=0.37140488624572754, unknown-#in~x-unknown=-1.1990375518798828, x=-1.1990375518798828] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=-1.1990375518798828, x=1.3132877349853516] [L51] reach_error() VAL [IN=-1.1990375518798828, x=1.3132877349853516] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2022-11-23 14:12:13,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_189d8eab-88bb-40ab-9676-700a1dbf960c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE