./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:40:35,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:40:35,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:40:35,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:40:35,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:40:35,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:40:35,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:40:35,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:40:35,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:40:35,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:40:35,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:40:35,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:40:35,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:40:35,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:40:35,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:40:35,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:40:35,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:40:35,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:40:35,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:40:35,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:40:35,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:40:35,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:40:35,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:40:35,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:40:35,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:40:35,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:40:35,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:40:35,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:40:35,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:40:35,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:40:35,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:40:35,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:40:35,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:40:35,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:40:35,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:40:35,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:40:35,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:40:35,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:40:35,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:40:35,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:40:35,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:40:35,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:40:35,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:40:35,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:40:35,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:40:35,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:40:35,821 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:40:35,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:40:35,822 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:40:35,822 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:40:35,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:40:35,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:40:35,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:40:35,825 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:40:35,825 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:40:35,825 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:40:35,826 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:40:35,826 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:40:35,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:40:35,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:40:35,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:40:35,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:40:35,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:40:35,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:40:35,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:40:35,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:40:35,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:40:35,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:40:35,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:40:35,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:40:35,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:40:35,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:40:35,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:40:35,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:35,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:40:35,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:40:35,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:40:35,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:40:35,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:40:35,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:40:35,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:40:35,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:40:35,842 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-12 23:40:36,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:40:36,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:40:36,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:40:36,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:40:36,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:40:36,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:36,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/bddf566aa/eaeb596014ee4df7b1b294a867ac6da6/FLAG5b2e82694 [2021-11-12 23:40:36,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:40:36,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:36,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/bddf566aa/eaeb596014ee4df7b1b294a867ac6da6/FLAG5b2e82694 [2021-11-12 23:40:37,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/bddf566aa/eaeb596014ee4df7b1b294a867ac6da6 [2021-11-12 23:40:37,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:40:37,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:40:37,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:37,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:40:37,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:40:37,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799c5676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37, skipping insertion in model container [2021-11-12 23:40:37,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:40:37,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:40:37,355 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-12 23:40:37,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:37,389 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:40:37,402 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-12 23:40:37,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:37,428 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:40:37,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37 WrapperNode [2021-11-12 23:40:37,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:37,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:37,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:40:37,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:40:37,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:37,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:40:37,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:40:37,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:40:37,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:40:37,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:40:37,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:40:37,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:40:37,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (1/1) ... [2021-11-12 23:40:37,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:37,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:40:37,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:40:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:40:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:40:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:40:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:40:38,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:40:38,015 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:40:38,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:38 BoogieIcfgContainer [2021-11-12 23:40:38,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:40:38,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:40:38,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:40:38,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:40:38,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:40:37" (1/3) ... [2021-11-12 23:40:38,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc7fbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:40:38, skipping insertion in model container [2021-11-12 23:40:38,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:37" (2/3) ... [2021-11-12 23:40:38,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc7fbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:40:38, skipping insertion in model container [2021-11-12 23:40:38,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:38" (3/3) ... [2021-11-12 23:40:38,043 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:38,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:40:38,049 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:40:38,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:40:38,138 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 [2021-11-12 23:40:38,139 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:40:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2021-11-12 23:40:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:40:38,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:38,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:40:38,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash 88159642, now seen corresponding path program 1 times [2021-11-12 23:40:38,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:40:38,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027482338] [2021-11-12 23:40:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:38,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:40:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:40:38,364 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:40:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:40:38,464 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:40:38,466 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:40:38,468 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:40:38,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:40:38,475 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 23:40:38,478 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:40:38,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:40:38 BoogieIcfgContainer [2021-11-12 23:40:38,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:40:38,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:40:38,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:40:38,519 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:40:38,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:38" (3/4) ... [2021-11-12 23:40:38,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:40:38,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:40:38,526 INFO L158 Benchmark]: Toolchain (without parser) took 1379.67ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.6MB in the beginning and 75.0MB in the end (delta: -14.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:38,526 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:38,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.52ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.4MB in the beginning and 75.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:40:38,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.81ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:38,533 INFO L158 Benchmark]: Boogie Preprocessor took 53.73ms. Allocated memory is still 100.7MB. Free memory was 73.9MB in the beginning and 72.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:38,534 INFO L158 Benchmark]: RCFGBuilder took 487.38ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 60.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:40:38,535 INFO L158 Benchmark]: TraceAbstraction took 497.69ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 75.5MB in the end (delta: -15.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:38,536 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 75.0MB in the end (delta: 509.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:38,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.52ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.4MB in the beginning and 75.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.81ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.73ms. Allocated memory is still 100.7MB. Free memory was 73.9MB in the beginning and 72.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.38ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 60.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 497.69ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 75.5MB in the end (delta: -15.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 75.0MB in the end (delta: 509.0kB). 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 37, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 52. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L48] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L48] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L50] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] RET, EXPR SqrtR(dd) [L50] r = SqrtR(dd) [L52] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L13] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2021-11-12 23:40:38,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:40:41,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:40:41,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:40:41,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:40:41,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:40:41,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:40:41,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:40:41,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:40:41,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:40:41,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:40:41,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:40:41,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:40:41,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:40:41,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:40:41,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:40:41,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:40:41,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:40:41,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:40:41,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:40:41,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:40:41,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:40:41,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:40:41,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:40:41,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:40:41,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:40:41,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:40:41,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:40:41,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:40:41,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:40:41,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:40:41,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:40:41,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:40:41,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:40:41,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:40:41,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:40:41,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:40:41,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:40:41,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:40:41,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:40:41,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:40:41,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:40:41,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:40:41,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:40:41,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:40:41,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:40:41,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:40:41,407 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:40:41,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:40:41,407 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:40:41,408 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:40:41,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:40:41,408 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:40:41,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:40:41,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:40:41,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:40:41,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:40:41,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:40:41,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:40:41,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:40:41,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:40:41,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:40:41,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:40:41,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:40:41,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:40:41,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:40:41,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:40:41,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:40:41,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:40:41,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:40:41,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:41,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:40:41,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:40:41,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:40:41,415 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:40:41,416 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:41,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:40:41,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:40:41,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:40:41,417 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-12 23:40:41,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:40:41,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:40:41,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:40:41,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:40:41,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:40:41,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:42,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/7d2e05c42/d1fb1ccb66c649d9a717f30defc99940/FLAG0d2d616f1 [2021-11-12 23:40:42,718 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:40:42,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:42,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/7d2e05c42/d1fb1ccb66c649d9a717f30defc99940/FLAG0d2d616f1 [2021-11-12 23:40:43,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/data/7d2e05c42/d1fb1ccb66c649d9a717f30defc99940 [2021-11-12 23:40:43,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:40:43,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:40:43,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:43,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:40:43,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:40:43,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cbd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43, skipping insertion in model container [2021-11-12 23:40:43,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:40:43,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:40:43,219 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-12 23:40:43,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:43,257 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:40:43,272 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_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-12 23:40:43,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:43,299 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:40:43,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43 WrapperNode [2021-11-12 23:40:43,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:43,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:43,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:40:43,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:40:43,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:43,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:40:43,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:40:43,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:40:43,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:40:43,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:40:43,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:40:43,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:40:43,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (1/1) ... [2021-11-12 23:40:43,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:43,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:40:43,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:40:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:40:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:40:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:40:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:40:50,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:40:50,688 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:40:50,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:50 BoogieIcfgContainer [2021-11-12 23:40:50,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:40:50,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:40:50,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:40:50,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:40:50,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:40:43" (1/3) ... [2021-11-12 23:40:50,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109b22cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:40:50, skipping insertion in model container [2021-11-12 23:40:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:43" (2/3) ... [2021-11-12 23:40:50,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109b22cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:40:50, skipping insertion in model container [2021-11-12 23:40:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:50" (3/3) ... [2021-11-12 23:40:50,702 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-12 23:40:50,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:40:50,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:40:50,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:40:50,791 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 [2021-11-12 23:40:50,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:40:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-12 23:40:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:40:50,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:50,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:40:50,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-11-12 23:40:50,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:50,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413757376] [2021-11-12 23:40:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:50,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:50,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:50,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:40:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:52,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:40:52,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:52,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:52,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:52,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413757376] [2021-11-12 23:40:52,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413757376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:52,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:52,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:40:52,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654622077] [2021-11-12 23:40:52,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:52,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:40:52,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:40:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:40:52,965 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:52,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:52,996 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-11-12 23:40:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:40:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:40:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:53,021 INFO L225 Difference]: With dead ends: 36 [2021-11-12 23:40:53,021 INFO L226 Difference]: Without dead ends: 15 [2021-11-12 23:40:53,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:40:53,045 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:53,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 14.42ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:40:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-12 23:40:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-12 23:40:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-11-12 23:40:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-12 23:40:53,086 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-12 23:40:53,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:53,087 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-12 23:40:53,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-12 23:40:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:40:53,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:53,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:40:53,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:53,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:53,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-11-12 23:40:53,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:53,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818781229] [2021-11-12 23:40:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:53,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:53,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:53,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:40:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:55,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:40:55,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:40:55,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:06,499 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from false [2021-11-12 23:41:08,572 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from true [2021-11-12 23:41:29,345 WARN L227 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 15 DAG size of output: 11 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:41:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:41:35,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:35,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818781229] [2021-11-12 23:41:35,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818781229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:41:35,007 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:41:35,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:41:35,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844609141] [2021-11-12 23:41:35,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:41:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:41:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-11-12 23:41:35,011 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-12 23:41:38,036 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-12 23:41:41,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:44,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:47,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:49,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:52,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:54,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:57,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:59,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:59,118 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-11-12 23:41:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:41:59,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:41:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:59,333 INFO L225 Difference]: With dead ends: 35 [2021-11-12 23:41:59,334 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 23:41:59,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-11-12 23:41:59,337 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21117.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 21999.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:59,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 8 Unknown, 20 Unchecked, 21999.55ms Time] [2021-11-12 23:41:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 23:41:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-11-12 23:41:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-11-12 23:41:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-12 23:41:59,345 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-11-12 23:41:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:59,346 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-12 23:41:59,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-12 23:41:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-12 23:41:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:41:59,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:59,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:41:59,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:59,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:59,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-11-12 23:41:59,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:59,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228893930] [2021-11-12 23:41:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:59,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:59,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:59,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:59,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:42:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:42:02,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:20,678 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0))))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:43:10,372 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:43:15,382 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:43:20,402 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:43:34,711 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:43:49,614 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:43:54,666 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:44:04,669 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:44:13,244 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:45:12,598 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 |ULTIMATE.start_SqrtR_~Input#1|))) (and (= .cse0 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse1)) (let ((.cse2 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4) (fp.mul c_currentRoundingMode .cse3 .cse4))))) (or (and (not .cse2) (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|))) (= (_ bv0 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)) (and (or (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) |ULTIMATE.start_SqrtR_~Input#1|) |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|)) .cse2) (= (_ bv1 32) |c_ULTIMATE.start_SqrtR_~cond~0#1|)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:45:44,257 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.div c_currentRoundingMode .cse4 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2))) (and (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)) (not (fp.gt .cse0 (fp.mul c_currentRoundingMode .cse1 .cse2))) (= .cse3 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:45:50,036 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:45:55,422 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:01,199 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:06,889 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:12,753 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:18,380 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:20,818 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse1 .cse1))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4))) (and (= (fp.div c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_SqrtR_#res#1|) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.lt .cse2 |ULTIMATE.start_SqrtR_~linf~0#1|)) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (not (fp.gt .cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:46:26,504 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:34,616 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:42,709 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:48,352 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:53,577 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:46:59,252 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:04,922 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:10,581 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:18,662 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:24,333 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:29,990 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:35,255 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:40,929 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:46,601 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:52,288 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:47:57,939 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:03,602 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:09,267 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:14,942 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:20,597 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:28,700 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:34,381 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:40,048 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:45,749 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:51,425 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:48:57,128 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:02,829 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:08,613 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:14,360 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:20,128 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:25,937 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:31,737 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:37,572 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:43,413 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:49,410 WARN L227 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:49:55,371 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:01,337 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:03,811 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse3 .cse7))) (let ((.cse4 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse5 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse4 .cse5) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse5)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from false [2021-11-12 23:50:06,089 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse3 .cse7))) (let ((.cse4 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (.cse5 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse4 .cse5) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (or (not .cse4) (not .cse5)))))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from true [2021-11-12 23:50:14,315 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:22,494 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:28,449 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:33,779 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:39,535 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:45,222 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:50,929 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:50:59,129 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:05,216 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:11,006 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:16,386 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:22,284 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:28,083 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:33,789 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:39,576 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:45,382 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:51,112 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:51:56,950 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:52:02,774 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-12 23:52:05,198 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse3 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse2 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse1) .cse2))) (and (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse1 .cse2))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse3 .cse5))) (or (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))) (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))))) (not (fp.lt .cse0 |ULTIMATE.start_SqrtR_~linf~0#1|)))))))) is different from false [2021-11-12 23:52:06,399 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-12 23:52:06,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:06,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228893930] [2021-11-12 23:52:06,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-12 23:52:06,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827016378] [2021-11-12 23:52:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:06,400 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:06,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-12 23:52:06,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:06,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:52:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:11,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:52:11,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:11,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 23:52:11,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664189846] [2021-11-12 23:52:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:11,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:11,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:52:11,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:54:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:31,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:54:31,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:31,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 23:54:31,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:31,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 23:54:31,419 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 23:54:31,419 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 23:54:31,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:54:31,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:31,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:32,052 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-12 23:54:32,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:32,055 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:54:32,058 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:54:32,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9113fbd-8b95-4dfa-9f29-e9c6a2658a00/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:32,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:54:32 BoogieIcfgContainer [2021-11-12 23:54:32,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:54:32,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:54:32,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:54:32,090 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:54:32,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:40:50" (3/4) ... [2021-11-12 23:54:32,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:54:32,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:54:32,094 INFO L158 Benchmark]: Toolchain (without parser) took 829057.62ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 51.7MB in the beginning and 69.0MB in the end (delta: -17.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-12 23:54:32,095 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:32,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.48ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 40.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:54:32,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.76ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 38.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:32,096 INFO L158 Benchmark]: Boogie Preprocessor took 34.64ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 37.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:32,096 INFO L158 Benchmark]: RCFGBuilder took 7310.75ms. Allocated memory is still 69.2MB. Free memory was 37.3MB in the beginning and 45.5MB in the end (delta: -8.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-12 23:54:32,097 INFO L158 Benchmark]: TraceAbstraction took 821391.32ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 45.0MB in the beginning and 69.6MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:32,097 INFO L158 Benchmark]: Witness Printer took 4.50ms. Allocated memory is still 92.3MB. Free memory was 69.6MB in the beginning and 69.0MB in the end (delta: 659.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:32,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.48ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 40.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.76ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 38.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.64ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 37.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7310.75ms. Allocated memory is still 69.2MB. Free memory was 37.3MB in the beginning and 45.5MB in the end (delta: -8.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 821391.32ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 45.0MB in the beginning and 69.6MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.50ms. Allocated memory is still 92.3MB. Free memory was 69.6MB in the beginning and 69.0MB in the end (delta: 659.4kB). 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L48] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L48] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L50] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] RET, EXPR SqrtR(dd) [L50] r = SqrtR(dd) [L52] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 821.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 24.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 21999.55ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 21117.49ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 20 mSolverCounterSat, 16.04ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 643.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN