./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P --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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:28:25,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:28:25,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:28:26,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:28:26,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:28:26,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:28:26,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:28:26,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:28:26,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:28:26,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:28:26,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:28:26,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:28:26,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:28:26,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:28:26,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:28:26,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:28:26,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:28:26,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:28:26,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:28:26,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:28:26,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:28:26,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:28:26,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:28:26,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:28:26,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:28:26,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:28:26,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:28:26,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:28:26,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:28:26,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:28:26,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:28:26,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:28:26,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:28:26,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:28:26,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:28:26,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:28:26,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:28:26,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:28:26,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:28:26,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:28:26,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:28:26,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:28:26,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:28:26,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:28:26,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:28:26,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:28:26,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:28:26,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:28:26,088 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:28:26,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:28:26,089 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:28:26,089 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:28:26,089 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:28:26,090 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:28:26,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:28:26,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:28:26,091 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:28:26,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:28:26,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:28:26,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:28:26,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:28:26,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:28:26,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:28:26,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:28:26,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:28:26,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:28:26,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:28:26,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:28:26,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:28:26,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:28:26,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:28:26,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:28:26,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:28:26,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:28:26,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:26,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:28:26,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:28:26,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:28:26,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:28:26,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:28:26,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:28:26,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:28:26,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:28:26,101 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_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-11-21 01:28:26,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:28:26,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:28:26,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:28:26,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:28:26,396 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:28:26,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:26,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/49127d31b/2b4bad99db544bfe8efdab9099417f6a/FLAG928a63677 [2021-11-21 01:28:26,961 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:28:26,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:26,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/49127d31b/2b4bad99db544bfe8efdab9099417f6a/FLAG928a63677 [2021-11-21 01:28:27,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/49127d31b/2b4bad99db544bfe8efdab9099417f6a [2021-11-21 01:28:27,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:28:27,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:28:27,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:27,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:28:27,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:28:27,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a27ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27, skipping insertion in model container [2021-11-21 01:28:27,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:28:27,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:28:27,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-11-21 01:28:27,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:27,592 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:28:27,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-11-21 01:28:27,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:27,651 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:28:27,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27 WrapperNode [2021-11-21 01:28:27,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:27,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:27,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:28:27,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:28:27,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,697 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-21 01:28:27,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:27,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:28:27,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:28:27,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:28:27,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:28:27,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:28:27,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:28:27,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:28:27,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (1/1) ... [2021-11-21 01:28:27,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:27,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:28:27,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:28:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:28:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:28:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:28:27,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:28:27,894 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:28:27,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:28:28,044 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:28,105 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:28,105 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:28:28,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:28 BoogieIcfgContainer [2021-11-21 01:28:28,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:28,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:28,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:28,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:28,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:28:27" (1/3) ... [2021-11-21 01:28:28,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2401a21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:28, skipping insertion in model container [2021-11-21 01:28:28,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:27" (2/3) ... [2021-11-21 01:28:28,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2401a21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:28, skipping insertion in model container [2021-11-21 01:28:28,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:28" (3/3) ... [2021-11-21 01:28:28,117 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:28,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:28,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:28:28,172 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:28,179 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 [2021-11-21 01:28:28,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:28:28,218 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) [2021-11-21 01:28:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:28:28,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:28,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:28:28,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash 88161564, now seen corresponding path program 1 times [2021-11-21 01:28:28,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:28,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20987886] [2021-11-21 01:28:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:28,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:28,389 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:28:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:28:28,435 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:28:28,437 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:28:28,439 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:28:28,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:28:28,445 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:28:28,448 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:28:28,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:28:28 BoogieIcfgContainer [2021-11-21 01:28:28,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:28:28,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:28:28,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:28:28,474 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:28:28,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:28" (3/4) ... [2021-11-21 01:28:28,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:28:28,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:28:28,485 INFO L158 Benchmark]: Toolchain (without parser) took 1170.62ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 55.0MB in the beginning and 82.8MB in the end (delta: -27.8MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:28,486 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory was 59.2MB in the beginning and 59.2MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:28,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.47ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 54.7MB in the beginning and 112.8MB in the end (delta: -58.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:28:28,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.39ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:28:28,488 INFO L158 Benchmark]: Boogie Preprocessor took 26.02ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 110.1MB in the end (delta: 681.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:28,488 INFO L158 Benchmark]: RCFGBuilder took 382.80ms. Allocated memory is still 138.4MB. Free memory was 110.1MB in the beginning and 98.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:28:28,489 INFO L158 Benchmark]: TraceAbstraction took 362.98ms. Allocated memory is still 138.4MB. Free memory was 97.5MB in the beginning and 83.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 01:28:28,490 INFO L158 Benchmark]: Witness Printer took 5.63ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 82.8MB in the end (delta: 681.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:28:28,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory was 59.2MB in the beginning and 59.2MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.47ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 54.7MB in the beginning and 112.8MB in the end (delta: -58.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.39ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.02ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 110.1MB in the end (delta: 681.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 382.80ms. Allocated memory is still 138.4MB. Free memory was 110.1MB in the beginning and 98.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 362.98ms. Allocated memory is still 138.4MB. Free memory was 97.5MB in the beginning and 83.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.63ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 82.8MB in the end (delta: 681.2kB). 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 38, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 53. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L49] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L51] 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 VAL [\old(Input)=50, _EPS=1/1000000, cond=0, i=0, Input=50, xn=1, xn=1] [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] RET, EXPR SqrtR(dd) [L51] r = SqrtR(dd) [L53] 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, 0.0s 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 [2021-11-21 01:28:28,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/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_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P --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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:28:30,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:28:30,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:28:30,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:28:30,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:28:30,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:28:30,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:28:30,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:28:30,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:28:30,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:28:30,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:28:30,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:28:30,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:28:30,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:28:30,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:28:30,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:28:30,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:28:30,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:28:30,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:28:30,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:28:30,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:28:30,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:28:30,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:28:30,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:28:30,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:28:30,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:28:30,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:28:30,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:28:30,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:28:30,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:28:30,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:28:30,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:28:30,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:28:30,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:28:30,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:28:30,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:28:30,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:28:30,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:28:30,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:28:30,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:28:30,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:28:30,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:28:31,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:28:31,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:28:31,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:28:31,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:28:31,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:28:31,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:28:31,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:28:31,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:28:31,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:28:31,037 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:28:31,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:28:31,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:28:31,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:28:31,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:28:31,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:28:31,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:28:31,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:28:31,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:28:31,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:28:31,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:28:31,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:28:31,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:28:31,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:28:31,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:28:31,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:28:31,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:28:31,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:28:31,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:28:31,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:31,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:28:31,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:28:31,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:28:31,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:28:31,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:28:31,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:28:31,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:28:31,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:28:31,046 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_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-11-21 01:28:31,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:28:31,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:28:31,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:28:31,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:28:31,458 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:28:31,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:31,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/7dd7fcb42/1b3e4e3df2974364826967a24eaefc92/FLAG1c9416807 [2021-11-21 01:28:32,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:28:32,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:32,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/7dd7fcb42/1b3e4e3df2974364826967a24eaefc92/FLAG1c9416807 [2021-11-21 01:28:32,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/data/7dd7fcb42/1b3e4e3df2974364826967a24eaefc92 [2021-11-21 01:28:32,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:28:32,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:28:32,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:32,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:28:32,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:28:32,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337eec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32, skipping insertion in model container [2021-11-21 01:28:32,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:28:32,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:28:32,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-11-21 01:28:32,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:32,673 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:28:32,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-11-21 01:28:32,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:28:32,740 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:28:32,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32 WrapperNode [2021-11-21 01:28:32,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:28:32,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:32,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:28:32,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:28:32,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,837 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2021-11-21 01:28:32,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:28:32,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:28:32,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:28:32,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:28:32,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:28:32,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:28:32,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:28:32,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:28:32,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (1/1) ... [2021-11-21 01:28:32,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:28:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:32,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:28:32,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:28:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:28:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:28:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:28:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:28:33,075 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:28:33,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:28:41,832 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:41,839 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:41,840 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:28:41,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:41 BoogieIcfgContainer [2021-11-21 01:28:41,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:41,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:41,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:41,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:41,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:28:32" (1/3) ... [2021-11-21 01:28:41,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fa4668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:41, skipping insertion in model container [2021-11-21 01:28:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:28:32" (2/3) ... [2021-11-21 01:28:41,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fa4668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:41, skipping insertion in model container [2021-11-21 01:28:41,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:41" (3/3) ... [2021-11-21 01:28:41,852 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-11-21 01:28:41,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:41,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:28:41,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:41,924 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 [2021-11-21 01:28:41,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:28:41,940 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) [2021-11-21 01:28:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:28:41,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:41,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:41,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-11-21 01:28:41,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:28:41,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859939113] [2021-11-21 01:28:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:41,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:28:41,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:28:41,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:28:41,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:28:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:43,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:28:43,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:43,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:28:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:43,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:28:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859939113] [2021-11-21 01:28:43,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859939113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:43,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:43,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:28:43,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355143469] [2021-11-21 01:28:43,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:43,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:28:43,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:28:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:28:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:28:43,700 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) [2021-11-21 01:28:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:43,715 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-11-21 01:28:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:28:43,717 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 [2021-11-21 01:28:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:43,725 INFO L225 Difference]: With dead ends: 36 [2021-11-21 01:28:43,725 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 01:28:43,728 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 [2021-11-21 01:28:43,732 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:43,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:28:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 01:28:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-21 01:28:43,757 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) [2021-11-21 01:28:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-21 01:28:43,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-21 01:28:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:43,759 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-21 01:28:43,760 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) [2021-11-21 01:28:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-21 01:28:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:28:43,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:43,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:43,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:43,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:28:43,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-11-21 01:28:43,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:28:43,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258376752] [2021-11-21 01:28:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:43,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:28:43,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:28:43,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:28:43,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:28:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:45,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:28:45,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:28:46,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:28:57,074 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 [2021-11-21 01:28:59,138 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 [2021-11-21 01:29:05,058 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 .cse1)))) (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) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse2 .cse2))) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) is different from false [2021-11-21 01:29:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:29:21,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:29:21,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258376752] [2021-11-21 01:29:21,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258376752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:21,742 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:21,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:29:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760062162] [2021-11-21 01:29:21,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:29:21,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:29:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:29:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-11-21 01:29:21,746 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) [2021-11-21 01:29:26,166 WARN L860 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_SqrtR_~xn~0#1| ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((|v_ULTIMATE.start_SqrtR_~linf~0#1_5| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode |c_ULTIMATE.start_SqrtR_~xn~0#1| |c_ULTIMATE.start_SqrtR_~xn~0#1|)) |v_ULTIMATE.start_SqrtR_~linf~0#1_5|))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-21 01:29:28,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:31,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:34,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:35,530 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-21 01:29:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:29:35,531 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 [2021-11-21 01:29:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:35,532 INFO L225 Difference]: With dead ends: 34 [2021-11-21 01:29:35,532 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 01:29:35,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=17, Invalid=21, Unknown=4, NotChecked=30, Total=72 [2021-11-21 01:29:35,534 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:35,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 24 Unchecked, 10.0s Time] [2021-11-21 01:29:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 01:29:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 01:29:35,539 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) [2021-11-21 01:29:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-21 01:29:35,540 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-11-21 01:29:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:35,546 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-21 01:29:35,547 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) [2021-11-21 01:29:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-21 01:29:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:29:35,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:35,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:35,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:29:35,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:29:35,753 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-11-21 01:29:35,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:29:35,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421758728] [2021-11-21 01:29:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:35,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:29:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:29:35,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:29:35,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:29:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:38,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 01:29:38,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:28,817 WARN L227 SmtUtils]: Spent 13.59s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:33:16,590 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 [2021-11-21 01:33:48,031 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 [2021-11-21 01:33:53,738 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) [2021-11-21 01:33:59,115 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) [2021-11-21 01:34:04,957 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:10,777 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) [2021-11-21 01:34:16,792 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:22,626 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:25,087 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 [2021-11-21 01:34:31,122 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:39,472 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) [2021-11-21 01:34:47,809 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:53,701 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:34:59,117 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:04,963 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:10,856 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:16,580 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:24,695 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) [2021-11-21 01:35:30,508 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:36,300 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) [2021-11-21 01:35:41,583 WARN L227 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:47,477 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:53,251 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:35:58,999 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) [2021-11-21 01:36:04,891 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:10,622 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:16,285 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) [2021-11-21 01:36:21,910 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:27,515 WARN L227 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:35,567 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) [2021-11-21 01:36:41,184 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) [2021-11-21 01:36:46,805 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:52,472 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) [2021-11-21 01:36:58,110 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:03,736 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:09,344 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:14,975 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) [2021-11-21 01:37:20,598 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:26,251 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:31,975 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:37,736 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:43,449 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:49,152 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:37:54,857 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:38:00,561 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:38:06,235 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) [2021-11-21 01:38:08,665 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 [2021-11-21 01:38:09,487 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-21 01:38:09,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:38:09,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421758728] [2021-11-21 01:38:09,489 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/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") [2021-11-21 01:38:09,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728527079] [2021-11-21 01:38:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:09,489 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:38:09,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:38:09,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-21 01:38:09,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-21 01:38:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:14,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:38:14,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:14,043 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-21 01:38:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452840336] [2021-11-21 01:38:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:14,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:14,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:14,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:14,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:40:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:40:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:24,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-21 01:40:24,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:24,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-21 01:40:24,102 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-21 01:40:24,103 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-21 01:40:24,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:40:24,312 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-21 01:40:24,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:24,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-21 01:40:24,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 01:40:24,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452df36-cb01-47f4-aac5-fcf02b7bd921/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:24,731 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 01:40:24,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:40:24,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:40:24 BoogieIcfgContainer [2021-11-21 01:40:24,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:40:24,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:40:24,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:40:24,760 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:40:24,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:41" (3/4) ... [2021-11-21 01:40:24,764 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:40:24,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:40:24,766 INFO L158 Benchmark]: Toolchain (without parser) took 712332.99ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 47.7MB in the beginning and 33.4MB in the end (delta: 14.3MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2021-11-21 01:40:24,766 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:40:24,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.58ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 51.5MB in the end (delta: -4.0MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-11-21 01:40:24,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.89ms. Allocated memory is still 67.1MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:40:24,774 INFO L158 Benchmark]: Boogie Preprocessor took 60.72ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 48.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:40:24,774 INFO L158 Benchmark]: RCFGBuilder took 8941.88ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 38.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:40:24,776 INFO L158 Benchmark]: TraceAbstraction took 702907.19ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 37.7MB in the beginning and 34.2MB in the end (delta: 3.5MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-11-21 01:40:24,776 INFO L158 Benchmark]: Witness Printer took 7.46ms. Allocated memory is still 92.3MB. Free memory was 34.2MB in the beginning and 33.4MB in the end (delta: 710.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:40:24,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.58ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 51.5MB in the end (delta: -4.0MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.89ms. Allocated memory is still 67.1MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.72ms. Allocated memory is still 67.1MB. Free memory was 49.8MB in the beginning and 48.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 8941.88ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 38.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 702907.19ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 37.7MB in the beginning and 34.2MB in the end (delta: 3.5MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Witness Printer took 7.46ms. Allocated memory is still 92.3MB. Free memory was 34.2MB in the beginning and 33.4MB in the end (delta: 710.9kB). 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; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L49] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L51] 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)) [L38] return 1.0 / xnp1; [L51] RET, EXPR SqrtR(dd) [L51] r = SqrtR(dd) [L53] 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: 702.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.7s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 547.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 6 QuantifiedInterpolants, 372 SizeOfPredicates, 7 NumberOfNonLiveVariables, 120 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