./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8 --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 bd55ad0571253b0d946054bf9cc9a9ae3c122cee36a40632a267fd8991e0eaf0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:01,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:01,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:01,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:01,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:01,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:01,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:01,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:01,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:01,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:01,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:01,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:01,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:01,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:01,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:01,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:01,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:01,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:01,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:01,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:01,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:01,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:01,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:01,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:01,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:01,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:01,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:01,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:01,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:01,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:01,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:01,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:01,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:01,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:01,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:01,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:01,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:01,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:01,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:01,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:01,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:01,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:23:01,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:01,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:01,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:01,263 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:01,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:01,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:01,263 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:23:01,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:01,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:01,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:23:01,265 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:23:01,265 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:01,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:23:01,266 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:23:01,266 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:23:01,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:01,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:01,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:01,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:01,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:01,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:01,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:01,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:01,269 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:01,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:01,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:01,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:01,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:01,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:01,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:01,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:01,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:01,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:01,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:01,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:23:01,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:23:01,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:01,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:01,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:01,273 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd55ad0571253b0d946054bf9cc9a9ae3c122cee36a40632a267fd8991e0eaf0 [2021-11-07 01:23:01,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:01,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:01,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:01,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:01,583 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:01,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-11-07 01:23:01,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/f249871cc/b46143b10eb945d1a369828c31f96a43/FLAGf97d83944 [2021-11-07 01:23:02,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:02,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-11-07 01:23:02,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/f249871cc/b46143b10eb945d1a369828c31f96a43/FLAGf97d83944 [2021-11-07 01:23:02,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/f249871cc/b46143b10eb945d1a369828c31f96a43 [2021-11-07 01:23:02,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:02,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:02,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:02,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:02,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:02,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7074fb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02, skipping insertion in model container [2021-11-07 01:23:02,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:02,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:02,869 WARN L228 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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1266,1279] [2021-11-07 01:23:02,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:02,881 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:02,900 WARN L228 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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1266,1279] [2021-11-07 01:23:02,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:02,913 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:02,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02 WrapperNode [2021-11-07 01:23:02,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:02,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:02,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:02,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:02,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:02,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:02,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:02,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:02,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:02,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:02,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:02,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:02,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (1/1) ... [2021-11-07 01:23:02,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:03,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:03,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:03,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:23:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:03,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:03,337 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 01:23:03,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:03 BoogieIcfgContainer [2021-11-07 01:23:03,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:03,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:03,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:03,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:03,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:02" (1/3) ... [2021-11-07 01:23:03,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:03, skipping insertion in model container [2021-11-07 01:23:03,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:02" (2/3) ... [2021-11-07 01:23:03,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7c165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:03, skipping insertion in model container [2021-11-07 01:23:03,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:03" (3/3) ... [2021-11-07 01:23:03,349 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2021-11-07 01:23:03,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:03,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:23:03,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:03,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:23:03,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:23:03,431 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) [2021-11-07 01:23:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:23:03,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:03,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:23:03,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:23:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-11-07 01:23:03,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:23:03,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865240595] [2021-11-07 01:23:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:03,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:23:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:23:03,623 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:23:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:23:03,692 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:23:03,695 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:23:03,697 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:23:03,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:23:03,704 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:23:03,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:23:03,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:23:03 BoogieIcfgContainer [2021-11-07 01:23:03,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:23:03,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:23:03,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:23:03,736 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:23:03,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:03" (3/4) ... [2021-11-07 01:23:03,740 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:23:03,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:23:03,746 INFO L168 Benchmark]: Toolchain (without parser) took 1133.95 ms. Allocated memory is still 92.3 MB. Free memory was 50.6 MB in the beginning and 36.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:03,747 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:03,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.49 ms. Allocated memory is still 92.3 MB. Free memory was 50.4 MB in the beginning and 65.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:03,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.01 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 63.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:03,751 INFO L168 Benchmark]: Boogie Preprocessor took 24.29 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 62.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:03,752 INFO L168 Benchmark]: RCFGBuilder took 360.06 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 50.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:03,754 INFO L168 Benchmark]: TraceAbstraction took 389.71 ms. Allocated memory is still 92.3 MB. Free memory was 49.6 MB in the beginning and 36.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:03,761 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 92.3 MB. Free memory was 36.7 MB in the beginning and 36.5 MB in the end (delta: 257.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:03,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.49 ms. Allocated memory is still 92.3 MB. Free memory was 50.4 MB in the beginning and 65.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.01 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 63.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.29 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 62.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 360.06 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 50.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 389.71 ms. Allocated memory is still 92.3 MB. Free memory was 49.6 MB in the beginning and 36.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.17 ms. Allocated memory is still 92.3 MB. Free memory was 36.7 MB in the beginning and 36.5 MB in the end (delta: 257.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, 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 [2021-11-07 01:23:03,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8 --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 bd55ad0571253b0d946054bf9cc9a9ae3c122cee36a40632a267fd8991e0eaf0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:06,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:06,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:06,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:06,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:06,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:06,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:06,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:06,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:06,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:06,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:06,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:06,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:06,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:06,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:06,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:06,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:06,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:06,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:06,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:06,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:06,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:06,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:06,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:06,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:06,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:06,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:06,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:06,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:06,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:06,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:06,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:06,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:06,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:06,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:06,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:06,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:06,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:06,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:06,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:06,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:06,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:23:06,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:06,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:06,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:06,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:06,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:06,592 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:06,592 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:06,592 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:06,592 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:06,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:06,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:23:06,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:23:06,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:06,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:06,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:06,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:06,597 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:06,597 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:23:06,597 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:23:06,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:23:06,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:06,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:06,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:06,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:06,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:23:06,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:06,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:06,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:06,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:06,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:06,600 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:23:06,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:06,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:06,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:06,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:06,602 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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd55ad0571253b0d946054bf9cc9a9ae3c122cee36a40632a267fd8991e0eaf0 [2021-11-07 01:23:07,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:07,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:07,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:07,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:07,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:07,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-11-07 01:23:07,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/5bf9ea379/15215d2eb6c1437fa9f56bdda5ed15e6/FLAG1cc9b02b1 [2021-11-07 01:23:07,757 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:07,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-11-07 01:23:07,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/5bf9ea379/15215d2eb6c1437fa9f56bdda5ed15e6/FLAG1cc9b02b1 [2021-11-07 01:23:08,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/data/5bf9ea379/15215d2eb6c1437fa9f56bdda5ed15e6 [2021-11-07 01:23:08,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:08,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:08,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:08,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:08,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:08,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0943c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08, skipping insertion in model container [2021-11-07 01:23:08,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:08,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:08,296 WARN L228 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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1266,1279] [2021-11-07 01:23:08,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:08,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:08,335 WARN L228 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_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1266,1279] [2021-11-07 01:23:08,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:08,361 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:08,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08 WrapperNode [2021-11-07 01:23:08,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:08,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:08,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:08,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:08,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:08,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:08,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:08,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:08,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:08,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:08,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:08,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:08,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (1/1) ... [2021-11-07 01:23:08,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:08,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:08,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:23:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:23:23,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:23:23,209 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 01:23:23,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:23 BoogieIcfgContainer [2021-11-07 01:23:23,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:23:23,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:23:23,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:23:23,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:23:23,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:08" (1/3) ... [2021-11-07 01:23:23,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca76086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:23, skipping insertion in model container [2021-11-07 01:23:23,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:08" (2/3) ... [2021-11-07 01:23:23,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca76086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:23, skipping insertion in model container [2021-11-07 01:23:23,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:23" (3/3) ... [2021-11-07 01:23:23,232 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2021-11-07 01:23:23,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:23:23,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:23:23,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:23:23,314 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:23:23,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:23:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-07 01:23:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:23:23,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:23,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:23,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:23:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-07 01:23:23,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:23,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948356670] [2021-11-07 01:23:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:23,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:23,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:23,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:23,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:27,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:23:27,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:27,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:27,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:27,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948356670] [2021-11-07 01:23:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948356670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:27,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:27,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:23:27,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084117315] [2021-11-07 01:23:27,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:23:27,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:23:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:27,306 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 01:23:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:27,321 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-07 01:23:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:23:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 01:23:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:27,332 INFO L225 Difference]: With dead ends: 31 [2021-11-07 01:23:27,332 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 01:23:27,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:23:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 01:23:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 01:23:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-07 01:23:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-07 01:23:27,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-07 01:23:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:27,366 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-07 01:23:27,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 01:23:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-07 01:23:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:23:27,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:27,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:27,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:27,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:27,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:23:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-07 01:23:27,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:27,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171373213] [2021-11-07 01:23:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:27,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:27,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:27,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:27,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_627c10a2-0c6e-4d37-8eba-3b3ad8419ab9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process