./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_5.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_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/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_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/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_e864bc77-9d99-4289-8356-dbb05c84ef70/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 85959357c46ee97faaa95035ab6eb151e81909e16b84617e7191fd233904f467 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:35,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:35,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:35,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:35,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:35,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:35,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:35,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:35,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:35,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:35,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:35,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:35,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:35,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:35,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:35,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:35,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:35,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:35,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:35,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:35,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:35,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:35,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:35,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:35,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:35,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:35,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:35,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:35,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:35,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:35,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:35,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:35,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:35,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:35,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:35,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:35,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:35,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:35,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:35,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:35,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:35,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:16:35,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:35,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:35,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:35,747 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:35,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:35,748 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:35,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:16:35,748 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:35,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:35,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:16:35,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:16:35,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:35,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:16:35,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:16:35,751 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:16:35,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:35,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:35,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:16:35,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:35,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:35,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:35,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:35,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:35,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:35,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:35,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:35,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:35,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:35,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:35,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:35,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:35,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:35,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:35,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:35,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:16:35,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:16:35,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:35,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:35,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:35,769 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_e864bc77-9d99-4289-8356-dbb05c84ef70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85959357c46ee97faaa95035ab6eb151e81909e16b84617e7191fd233904f467 [2021-11-07 02:16:36,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:36,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:36,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:36,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:36,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:36,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2021-11-07 02:16:36,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/c2106d978/7aac6132cd654c019d8cdd70a81871d9/FLAGa088eb25c [2021-11-07 02:16:36,744 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:36,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2021-11-07 02:16:36,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/c2106d978/7aac6132cd654c019d8cdd70a81871d9/FLAGa088eb25c [2021-11-07 02:16:37,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/c2106d978/7aac6132cd654c019d8cdd70a81871d9 [2021-11-07 02:16:37,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:37,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:37,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:37,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:37,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:37,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cabca5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37, skipping insertion in model container [2021-11-07 02:16:37,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:37,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:37,378 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_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2021-11-07 02:16:37,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:37,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:37,411 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_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2021-11-07 02:16:37,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:37,427 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:37,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37 WrapperNode [2021-11-07 02:16:37,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:37,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:37,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:37,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:37,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:37,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:37,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:37,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:37,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:37,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:37,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:37,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:37,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:37,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:37,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:37,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:16:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:37,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:37,979 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-07 02:16:37,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:37 BoogieIcfgContainer [2021-11-07 02:16:37,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:37,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:37,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:37,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:37,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:37" (1/3) ... [2021-11-07 02:16:37,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e208479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:37, skipping insertion in model container [2021-11-07 02:16:37,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (2/3) ... [2021-11-07 02:16:37,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e208479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:37, skipping insertion in model container [2021-11-07 02:16:37,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:37" (3/3) ... [2021-11-07 02:16:37,989 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2021-11-07 02:16:37,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:38,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:16:38,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:38,096 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 02:16:38,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:16:38,109 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 02:16:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:16:38,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:38,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:16:38,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 67911, now seen corresponding path program 1 times [2021-11-07 02:16:38,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:16:38,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215044682] [2021-11-07 02:16:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:38,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:16:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:38,289 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:16:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:38,361 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:16:38,363 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:16:38,365 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:16:38,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:16:38,371 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:16:38,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:16:38,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:16:38 BoogieIcfgContainer [2021-11-07 02:16:38,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:16:38,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:16:38,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:16:38,395 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:16:38,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:37" (3/4) ... [2021-11-07 02:16:38,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:16:38,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:16:38,401 INFO L168 Benchmark]: Toolchain (without parser) took 1284.75 ms. Allocated memory is still 117.4 MB. Free memory was 73.5 MB in the beginning and 60.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,401 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:38,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.36 ms. Allocated memory is still 117.4 MB. Free memory was 73.3 MB in the beginning and 90.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,404 INFO L168 Benchmark]: Boogie Preprocessor took 63.39 ms. Allocated memory is still 117.4 MB. Free memory was 88.9 MB in the beginning and 87.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,404 INFO L168 Benchmark]: RCFGBuilder took 437.95 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 75.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,405 INFO L168 Benchmark]: TraceAbstraction took 410.91 ms. Allocated memory is still 117.4 MB. Free memory was 75.1 MB in the beginning and 61.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,405 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 117.4 MB. Free memory was 61.2 MB in the beginning and 60.8 MB in the end (delta: 423.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:38,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.36 ms. Allocated memory is still 117.4 MB. Free memory was 73.3 MB in the beginning and 90.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.39 ms. Allocated memory is still 117.4 MB. Free memory was 88.9 MB in the beginning and 87.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 437.95 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 75.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 410.91 ms. Allocated memory is still 117.4 MB. Free memory was 75.1 MB in the beginning and 61.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.31 ms. Allocated memory is still 117.4 MB. Free memory was 61.2 MB in the beginning and 60.8 MB in the end (delta: 423.4 kB). Peak memory consumption was 2.1 MB. 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) [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: 0.2s, 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: 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 02:16:38,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/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_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/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_e864bc77-9d99-4289-8356-dbb05c84ef70/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 85959357c46ee97faaa95035ab6eb151e81909e16b84617e7191fd233904f467 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:41,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:41,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:41,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:41,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:41,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:41,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:41,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:41,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:41,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:41,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:41,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:41,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:41,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:41,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:41,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:41,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:41,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:41,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:41,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:41,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:41,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:41,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:41,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:41,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:41,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:41,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:41,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:41,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:41,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:41,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:41,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:41,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:41,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:41,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:41,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:41,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:41,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:41,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:41,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:41,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:41,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:16:41,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:41,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:41,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:41,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:41,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:41,261 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:41,261 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:41,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:41,262 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:41,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:41,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:41,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:41,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:41,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:41,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:41,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:41,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:41,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:16:41,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:16:41,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:41,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:41,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:41,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:41,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:41,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:16:41,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:41,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:41,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:41,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:41,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:41,274 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:16:41,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:41,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:41,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:41,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:41,276 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_e864bc77-9d99-4289-8356-dbb05c84ef70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85959357c46ee97faaa95035ab6eb151e81909e16b84617e7191fd233904f467 [2021-11-07 02:16:41,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:41,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:41,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:41,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:41,843 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:41,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2021-11-07 02:16:41,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/062ac315d/0c8a586913474087bd51bc51b1c87307/FLAG1ed67e138 [2021-11-07 02:16:42,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:42,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2021-11-07 02:16:42,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/062ac315d/0c8a586913474087bd51bc51b1c87307/FLAG1ed67e138 [2021-11-07 02:16:42,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/data/062ac315d/0c8a586913474087bd51bc51b1c87307 [2021-11-07 02:16:42,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:42,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:42,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:42,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:42,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:42,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:42" (1/1) ... [2021-11-07 02:16:42,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb4ab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:42, skipping insertion in model container [2021-11-07 02:16:42,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:42" (1/1) ... [2021-11-07 02:16:42,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:42,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:43,116 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_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2021-11-07 02:16:43,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:43,147 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:43,215 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_e864bc77-9d99-4289-8356-dbb05c84ef70/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2021-11-07 02:16:43,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:43,259 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:43,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43 WrapperNode [2021-11-07 02:16:43,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:43,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:43,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:43,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:43,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:43,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:43,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:43,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:43,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:43,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:43,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:43,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:43,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:43,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:43,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:16:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:54,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:54,271 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-07 02:16:54,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:54 BoogieIcfgContainer [2021-11-07 02:16:54,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:54,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:54,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:54,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:54,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:42" (1/3) ... [2021-11-07 02:16:54,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfbafe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:54, skipping insertion in model container [2021-11-07 02:16:54,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43" (2/3) ... [2021-11-07 02:16:54,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfbafe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:54, skipping insertion in model container [2021-11-07 02:16:54,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:54" (3/3) ... [2021-11-07 02:16:54,284 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2021-11-07 02:16:54,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:54,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:16:54,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:54,351 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 02:16:54,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:16:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 02:16:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:16:54,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:54,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:54,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-11-07 02:16:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:54,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083759964] [2021-11-07 02:16:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:54,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:54,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:54,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:16:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:16:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:57,364 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 02:16:57,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:57,506 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 02:16:57,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:57,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083759964] [2021-11-07 02:16:57,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083759964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:57,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:57,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:16:57,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411411861] [2021-11-07 02:16:57,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:16:57,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:16:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:16:57,550 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:16:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:57,579 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-07 02:16:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:16:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-07 02:16:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:57,605 INFO L225 Difference]: With dead ends: 27 [2021-11-07 02:16:57,605 INFO L226 Difference]: Without dead ends: 11 [2021-11-07 02:16:57,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 02:16:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-07 02:16:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 02:16:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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 02:16:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-07 02:16:57,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-11-07 02:16:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:57,673 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-07 02:16:57,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:16:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-07 02:16:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:16:57,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:57,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:57,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:57,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:57,906 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-11-07 02:16:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:57,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009774470] [2021-11-07 02:16:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:57,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:57,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:57,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e864bc77-9d99-4289-8356-dbb05c84ef70/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process