./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:49:42,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:49:42,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:49:42,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:49:42,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:49:42,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:49:42,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:49:42,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:49:42,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:49:42,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:49:42,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:49:42,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:49:42,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:49:42,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:49:42,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:49:42,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:49:42,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:49:42,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:49:42,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:49:42,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:49:42,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:49:42,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:49:42,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:49:42,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:49:42,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:49:42,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:49:42,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:49:42,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:49:42,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:49:42,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:49:42,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:49:42,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:49:42,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:49:42,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:49:42,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:49:42,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:49:42,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:49:42,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:49:42,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:49:42,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:49:42,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:49:42,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:49:42,575 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:49:42,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:49:42,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:49:42,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:49:42,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:49:42,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:49:42,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:49:42,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:49:42,585 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:49:42,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:49:42,587 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:49:42,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:49:42,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:49:42,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:49:42,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:49:42,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:49:42,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:49:42,589 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:49:42,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:49:42,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:49:42,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:49:42,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:49:42,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:49:42,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:49:42,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:49:42,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:49:42,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:49:42,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:49:42,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:49:42,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:49:42,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:49:42,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:49:42,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:42,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:49:42,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:49:42,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:49:42,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:49:42,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:49:42,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:49:42,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:49:42,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:49:42,595 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_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 [2021-11-23 02:49:42,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:49:42,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:49:42,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:49:42,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:49:42,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:49:42,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-23 02:49:42,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/57d506df0/8f3fdebe21eb44b7b3895664e62b72db/FLAG61f010cf8 [2021-11-23 02:49:43,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:49:43,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-23 02:49:43,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/57d506df0/8f3fdebe21eb44b7b3895664e62b72db/FLAG61f010cf8 [2021-11-23 02:49:43,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/57d506df0/8f3fdebe21eb44b7b3895664e62b72db [2021-11-23 02:49:43,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:49:43,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:49:43,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:43,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:49:43,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:49:43,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:43" (1/1) ... [2021-11-23 02:49:43,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52638be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:43, skipping insertion in model container [2021-11-23 02:49:43,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:43" (1/1) ... [2021-11-23 02:49:43,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:49:43,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:49:44,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1722,1735] [2021-11-23 02:49:44,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:44,127 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:49:44,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1722,1735] [2021-11-23 02:49:44,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:44,161 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:49:44,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44 WrapperNode [2021-11-23 02:49:44,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:44,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:44,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:49:44,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:49:44,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,198 INFO L137 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-11-23 02:49:44,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:44,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:49:44,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:49:44,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:49:44,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:49:44,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:49:44,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:49:44,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:49:44,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (1/1) ... [2021-11-23 02:49:44,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:44,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:49:44,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:49:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:49:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:49:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:49:44,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:49:44,364 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:49:44,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:49:44,500 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:49:44,557 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:49:44,558 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:49:44,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:44 BoogieIcfgContainer [2021-11-23 02:49:44,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:49:44,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:49:44,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:49:44,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:49:44,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:49:43" (1/3) ... [2021-11-23 02:49:44,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cba0735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:44, skipping insertion in model container [2021-11-23 02:49:44,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:44" (2/3) ... [2021-11-23 02:49:44,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cba0735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:44, skipping insertion in model container [2021-11-23 02:49:44,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:44" (3/3) ... [2021-11-23 02:49:44,572 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-23 02:49:44,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:49:44,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:49:44,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:49:44,656 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:49:44,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:49:44,672 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) [2021-11-23 02:49:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:49:44,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:44,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:49:44,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-11-23 02:49:44,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:44,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397735247] [2021-11-23 02:49:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:44,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:49:44,828 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:49:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:49:44,878 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:49:44,880 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:49:44,881 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:49:44,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:49:44,888 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:49:44,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:49:44,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:49:44 BoogieIcfgContainer [2021-11-23 02:49:44,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:49:44,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:49:44,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:49:44,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:49:44,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:44" (3/4) ... [2021-11-23 02:49:44,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:49:44,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:49:44,931 INFO L158 Benchmark]: Toolchain (without parser) took 1100.80ms. Allocated memory was 79.7MB in the beginning and 121.6MB in the end (delta: 41.9MB). Free memory was 43.4MB in the beginning and 71.2MB in the end (delta: -27.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:49:44,932 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:49:44,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.94ms. Allocated memory was 79.7MB in the beginning and 121.6MB in the end (delta: 41.9MB). Free memory was 43.2MB in the beginning and 97.5MB in the end (delta: -54.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:49:44,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.65ms. Allocated memory is still 121.6MB. Free memory was 97.5MB in the beginning and 95.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:49:44,941 INFO L158 Benchmark]: Boogie Preprocessor took 19.46ms. Allocated memory is still 121.6MB. Free memory was 95.8MB in the beginning and 95.0MB in the end (delta: 776.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:49:44,942 INFO L158 Benchmark]: RCFGBuilder took 340.98ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 84.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:49:44,943 INFO L158 Benchmark]: TraceAbstraction took 357.15ms. Allocated memory is still 121.6MB. Free memory was 83.8MB in the beginning and 71.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:49:44,944 INFO L158 Benchmark]: Witness Printer took 6.13ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 71.2MB in the end (delta: 322.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:49:44,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.94ms. Allocated memory was 79.7MB in the beginning and 121.6MB in the end (delta: 41.9MB). Free memory was 43.2MB in the beginning and 97.5MB in the end (delta: -54.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.65ms. Allocated memory is still 121.6MB. Free memory was 97.5MB in the beginning and 95.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.46ms. Allocated memory is still 121.6MB. Free memory was 95.8MB in the beginning and 95.0MB in the end (delta: 776.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.98ms. Allocated memory is still 121.6MB. Free memory was 95.0MB in the beginning and 84.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 357.15ms. Allocated memory is still 121.6MB. Free memory was 83.8MB in the beginning and 71.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.13ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 71.2MB in the end (delta: 322.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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=49] [L51] reach_error() VAL [IN=49] - 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, PartialOrderReductionTime: 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 [2021-11-23 02:49:45,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/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_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:49:47,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:49:47,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:49:47,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:49:47,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:49:47,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:49:47,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:49:47,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:49:47,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:49:47,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:49:47,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:49:47,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:49:47,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:49:47,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:49:47,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:49:47,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:49:47,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:49:47,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:49:47,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:49:47,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:49:47,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:49:47,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:49:47,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:49:47,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:49:47,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:49:47,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:49:47,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:49:47,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:49:47,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:49:47,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:49:47,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:49:47,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:49:47,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:49:47,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:49:47,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:49:47,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:49:47,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:49:47,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:49:47,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:49:47,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:49:47,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:49:47,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:49:47,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:49:47,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:49:47,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:49:47,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:49:47,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:49:47,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:49:47,649 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:49:47,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:49:47,650 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:49:47,650 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:49:47,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:49:47,650 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:49:47,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:49:47,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:49:47,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:49:47,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:49:47,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:49:47,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:49:47,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:49:47,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:49:47,653 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:49:47,653 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:49:47,653 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:49:47,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:49:47,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:49:47,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:49:47,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:49:47,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:49:47,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:49:47,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:47,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:49:47,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:49:47,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:49:47,656 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:49:47,656 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:49:47,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:49:47,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:49:47,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:49:47,657 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_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 [2021-11-23 02:49:48,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:49:48,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:49:48,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:49:48,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:49:48,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:49:48,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-23 02:49:48,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/592d4057e/900ee726edb54c638ace007b63e844ab/FLAGd383e30e3 [2021-11-23 02:49:48,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:49:48,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-23 02:49:48,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/592d4057e/900ee726edb54c638ace007b63e844ab/FLAGd383e30e3 [2021-11-23 02:49:49,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/data/592d4057e/900ee726edb54c638ace007b63e844ab [2021-11-23 02:49:49,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:49:49,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:49:49,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:49,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:49:49,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:49:49,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b4384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49, skipping insertion in model container [2021-11-23 02:49:49,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:49:49,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:49:49,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1722,1735] [2021-11-23 02:49:49,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:49,326 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:49:49,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1722,1735] [2021-11-23 02:49:49,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:49,423 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:49:49,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49 WrapperNode [2021-11-23 02:49:49,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:49,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:49,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:49:49,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:49:49,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,462 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-11-23 02:49:49,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:49,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:49:49,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:49:49,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:49:49,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:49:49,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:49:49,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:49:49,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:49:49,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (1/1) ... [2021-11-23 02:49:49,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:49,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:49:49,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:49:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:49:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:49:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:49:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:49:49,665 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:49:49,667 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:49:56,462 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:49:56,468 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:49:56,468 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:49:56,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:56 BoogieIcfgContainer [2021-11-23 02:49:56,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:49:56,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:49:56,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:49:56,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:49:56,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:49:49" (1/3) ... [2021-11-23 02:49:56,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe61e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:56, skipping insertion in model container [2021-11-23 02:49:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:49" (2/3) ... [2021-11-23 02:49:56,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe61e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:56, skipping insertion in model container [2021-11-23 02:49:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:56" (3/3) ... [2021-11-23 02:49:56,479 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-23 02:49:56,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:49:56,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:49:56,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:49:56,541 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:49:56,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:49:56,559 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) [2021-11-23 02:49:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:49:56,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:56,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:56,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-23 02:49:56,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:49:56,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505849592] [2021-11-23 02:49:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:56,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:49:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:49:56,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:49:56,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:49:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:57,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:49:57,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:49:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:58,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:49:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:49:58,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:49:58,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505849592] [2021-11-23 02:49:58,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505849592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:58,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:58,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:49:58,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880107959] [2021-11-23 02:49:58,131 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:58,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:49:58,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:49:58,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:49:58,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:49:58,179 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) [2021-11-23 02:49:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:58,194 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-23 02:49:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:49:58,199 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 [2021-11-23 02:49:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:58,206 INFO L225 Difference]: With dead ends: 23 [2021-11-23 02:49:58,206 INFO L226 Difference]: Without dead ends: 9 [2021-11-23 02:49:58,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:49:58,213 INFO L933 BasicCegarLoop]: 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 [2021-11-23 02:49:58,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:49:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-23 02:49:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-23 02:49:58,252 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) [2021-11-23 02:49:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-23 02:49:58,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-23 02:49:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:58,256 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-23 02:49:58,256 INFO L471 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) [2021-11-23 02:49:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-23 02:49:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:49:58,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:58,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:58,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:49:58,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:49:58,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-23 02:49:58,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:49:58,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441011079] [2021-11-23 02:49:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:58,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:49:58,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:49:58,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:49:58,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:50:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:50:30,937 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:50:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:50:38,149 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 02:50:38,149 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:50:38,151 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:50:38,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:50:38,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:50:38,356 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:50:38,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:50:38,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:50:38 BoogieIcfgContainer [2021-11-23 02:50:38,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:50:38,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:50:38,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:50:38,390 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:50:38,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:56" (3/4) ... [2021-11-23 02:50:38,393 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:50:38,433 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:50:38,433 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:50:38,434 INFO L158 Benchmark]: Toolchain (without parser) took 49367.94ms. Allocated memory is still 71.3MB. Free memory was 55.8MB in the beginning and 40.4MB in the end (delta: 15.4MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-11-23 02:50:38,435 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 71.3MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:50:38,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.39ms. Allocated memory is still 71.3MB. Free memory was 55.6MB in the beginning and 54.6MB in the end (delta: 988.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:50:38,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.01ms. Allocated memory is still 71.3MB. Free memory was 54.6MB in the beginning and 53.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:50:38,437 INFO L158 Benchmark]: Boogie Preprocessor took 26.92ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 51.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:50:38,437 INFO L158 Benchmark]: RCFGBuilder took 6979.14ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 43.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:50:38,438 INFO L158 Benchmark]: TraceAbstraction took 41916.97ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 42.4MB in the end (delta: 212.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:50:38,438 INFO L158 Benchmark]: Witness Printer took 43.75ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 40.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:50:38,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 71.3MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.39ms. Allocated memory is still 71.3MB. Free memory was 55.6MB in the beginning and 54.6MB in the end (delta: 988.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.01ms. Allocated memory is still 71.3MB. Free memory was 54.6MB in the beginning and 53.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.92ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 51.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6979.14ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 43.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 41916.97ms. Allocated memory is still 71.3MB. Free memory was 42.6MB in the beginning and 42.4MB in the end (delta: 212.0kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.75ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 40.4MB in the end (delta: 2.0MB). 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 - 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 > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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 [\old(x)=-0.7270494699478149, \result=-0.664710521697998, x=-0.7270494699478149] [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 [\old(x)=-0.7270494699478149, \result=0.7475471496582031, x=-0.7270494699478149] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=-0.7270494699478149, x=0.16213929653167725] [L51] reach_error() VAL [IN=-0.7270494699478149, x=0.16213929653167725] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 14 GetRequests, 14 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, 33.6s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-11-23 02:50:38,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_054fea16-7a2f-40b4-a91f-dd39fef198fc/bin/utaipan-EQgc7hIp5V/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