./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:19:51,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:19:51,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:19:51,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:19:51,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:19:51,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:19:51,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:19:51,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:19:51,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:19:51,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:19:51,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:19:51,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:19:51,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:19:51,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:19:51,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:19:52,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:19:52,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:19:52,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:19:52,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:19:52,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:19:52,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:19:52,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:19:52,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:19:52,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:19:52,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:19:52,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:19:52,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:19:52,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:19:52,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:19:52,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:19:52,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:19:52,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:19:52,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:19:52,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:19:52,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:19:52,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:19:52,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:19:52,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:19:52,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:19:52,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:19:52,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:19:52,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:19:52,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:19:52,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:19:52,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:19:52,081 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:19:52,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:19:52,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:19:52,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:19:52,082 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:19:52,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:19:52,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:19:52,088 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:19:52,089 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:19:52,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:19:52,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:19:52,089 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:19:52,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:19:52,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:19:52,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:19:52,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:19:52,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:19:52,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:19:52,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:19:52,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:19:52,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:19:52,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:19:52,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:52,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:19:52,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:19:52,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:19:52,093 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:19:52,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:19:52,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:19:52,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:19:52,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:19:52,094 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_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-11-03 05:19:52,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:19:52,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:19:52,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:19:52,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:19:52,431 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:19:52,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-11-03 05:19:52,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/cd52d9345/394b28440a6e49e380ed2c254e767bc3/FLAG947e9a6e6 [2021-11-03 05:19:53,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:19:53,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-11-03 05:19:53,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/cd52d9345/394b28440a6e49e380ed2c254e767bc3/FLAG947e9a6e6 [2021-11-03 05:19:53,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/cd52d9345/394b28440a6e49e380ed2c254e767bc3 [2021-11-03 05:19:53,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:19:53,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:19:53,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:53,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:19:53,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:19:53,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab403b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53, skipping insertion in model container [2021-11-03 05:19:53,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:19:53,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:19:53,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-11-03 05:19:53,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:53,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:19:53,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-11-03 05:19:53,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:53,661 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:19:53,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53 WrapperNode [2021-11-03 05:19:53,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:53,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:53,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:19:53,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:19:53,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:53,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:19:53,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:19:53,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:19:53,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:19:53,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:19:53,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:19:53,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:19:53,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:53,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:19:53,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:19:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:19:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:19:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 05:19:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:19:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 05:19:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:19:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:19:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:19:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:19:54,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:19:54,066 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 05:19:54,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:19:54 BoogieIcfgContainer [2021-11-03 05:19:54,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:19:54,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:19:54,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:19:54,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:19:54,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:19:53" (1/3) ... [2021-11-03 05:19:54,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f312d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:19:54, skipping insertion in model container [2021-11-03 05:19:54,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (2/3) ... [2021-11-03 05:19:54,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f312d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:19:54, skipping insertion in model container [2021-11-03 05:19:54,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:19:54" (3/3) ... [2021-11-03 05:19:54,076 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-11-03 05:19:54,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:19:54,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:19:54,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:19:54,132 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 [2021-11-03 05:19:54,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:19:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 05:19:54,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:54,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 05:19:54,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2021-11-03 05:19:54,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:54,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834808648] [2021-11-03 05:19:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:19:54,323 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:19:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:19:54,390 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:19:54,392 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:19:54,393 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:19:54,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:19:54,398 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 05:19:54,401 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:19:54,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:19:54 BoogieIcfgContainer [2021-11-03 05:19:54,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:19:54,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:19:54,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:19:54,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:19:54,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:19:54" (3/4) ... [2021-11-03 05:19:54,424 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:19:54,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:19:54,426 INFO L168 Benchmark]: Toolchain (without parser) took 1029.09 ms. Allocated memory is still 130.0 MB. Free memory was 95.9 MB in the beginning and 74.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,427 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:19:54,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 106.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 130.0 MB. Free memory was 106.9 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,429 INFO L168 Benchmark]: Boogie Preprocessor took 20.82 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 104.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,430 INFO L168 Benchmark]: RCFGBuilder took 351.81 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 90.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,431 INFO L168 Benchmark]: TraceAbstraction took 349.01 ms. Allocated memory is still 130.0 MB. Free memory was 89.7 MB in the beginning and 75.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:19:54,431 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 130.0 MB. Free memory was 75.0 MB in the beginning and 74.6 MB in the end (delta: 397.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:19:54,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 106.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 130.0 MB. Free memory was 106.9 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.82 ms. Allocated memory is still 130.0 MB. Free memory was 105.6 MB in the beginning and 104.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 351.81 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 90.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 349.01 ms. Allocated memory is still 130.0 MB. Free memory was 89.7 MB in the beginning and 75.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 130.0 MB. Free memory was 75.0 MB in the beginning and 74.6 MB in the end (delta: 397.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:19:54,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH --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 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:19:56,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:19:56,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:19:56,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:19:56,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:19:56,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:19:56,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:19:56,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:19:56,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:19:56,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:19:56,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:19:56,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:19:56,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:19:56,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:19:56,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:19:56,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:19:56,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:19:56,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:19:56,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:19:56,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:19:56,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:19:56,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:19:56,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:19:56,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:19:56,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:19:56,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:19:56,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:19:56,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:19:56,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:19:56,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:19:56,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:19:56,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:19:56,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:19:56,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:19:56,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:19:56,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:19:56,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:19:56,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:19:56,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:19:56,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:19:56,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:19:56,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:19:57,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:19:57,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:19:57,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:19:57,007 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:19:57,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:19:57,008 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:19:57,008 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:19:57,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:19:57,009 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:19:57,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:19:57,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:19:57,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:19:57,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:19:57,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:19:57,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:19:57,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:19:57,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:19:57,012 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:19:57,012 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:19:57,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:19:57,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:19:57,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:19:57,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:19:57,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:19:57,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:19:57,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:19:57,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:57,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:19:57,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:19:57,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:19:57,020 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:19:57,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:19:57,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:19:57,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:19:57,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:19:57,021 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_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-11-03 05:19:57,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:19:57,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:19:57,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:19:57,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:19:57,385 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:19:57,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-11-03 05:19:57,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/c7e3da2c2/7b77214ec66d440d91c127fce8af6931/FLAG1f2cc6e8c [2021-11-03 05:19:57,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:19:57,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-11-03 05:19:57,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/c7e3da2c2/7b77214ec66d440d91c127fce8af6931/FLAG1f2cc6e8c [2021-11-03 05:19:58,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/data/c7e3da2c2/7b77214ec66d440d91c127fce8af6931 [2021-11-03 05:19:58,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:19:58,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:19:58,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:58,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:19:58,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:19:58,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bf9d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58, skipping insertion in model container [2021-11-03 05:19:58,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:19:58,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:19:58,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-11-03 05:19:58,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:58,577 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:19:58,592 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-11-03 05:19:58,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:58,629 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:19:58,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58 WrapperNode [2021-11-03 05:19:58,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:58,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:58,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:19:58,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:19:58,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:58,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:19:58,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:19:58,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:19:58,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:19:58,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:19:58,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:19:58,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:19:58,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (1/1) ... [2021-11-03 05:19:58,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:58,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:58,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:19:58,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:19:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:19:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:19:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 05:19:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:19:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:19:58,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:19:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-03 05:19:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:19:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:20:01,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:20:01,096 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-03 05:20:01,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:01 BoogieIcfgContainer [2021-11-03 05:20:01,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:20:01,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:20:01,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:20:01,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:20:01,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:19:58" (1/3) ... [2021-11-03 05:20:01,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cf91fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:01, skipping insertion in model container [2021-11-03 05:20:01,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:58" (2/3) ... [2021-11-03 05:20:01,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cf91fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:20:01, skipping insertion in model container [2021-11-03 05:20:01,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:01" (3/3) ... [2021-11-03 05:20:01,105 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-11-03 05:20:01,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:20:01,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:20:01,174 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:20:01,181 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 [2021-11-03 05:20:01,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:20:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-11-03 05:20:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:20:01,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:01,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:01,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:01,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-11-03 05:20:01,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:01,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36005789] [2021-11-03 05:20:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:01,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:01,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:01,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:20:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:01,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:20:01,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:01,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:01,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:01,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36005789] [2021-11-03 05:20:01,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36005789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:01,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:01,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:20:01,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036117193] [2021-11-03 05:20:01,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:20:01,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:20:01,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:20:01,619 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-03 05:20:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:01,631 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-03 05:20:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:20:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-03 05:20:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:01,640 INFO L225 Difference]: With dead ends: 21 [2021-11-03 05:20:01,640 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 05:20:01,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:20:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 05:20:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 05:20:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-11-03 05:20:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-11-03 05:20:01,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-11-03 05:20:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:01,665 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-11-03 05:20:01,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-03 05:20:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-11-03 05:20:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:20:01,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:01,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:01,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:01,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:01,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-11-03 05:20:01,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:01,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715512844] [2021-11-03 05:20:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:01,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:01,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:20:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:04,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:20:04,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:18,756 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) .cse1) .cse1)))) |c_ULTIMATE.start_InvSqrt_#res|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:21:56,551 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from false [2021-11-03 05:21:58,576 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from true [2021-11-03 05:22:47,804 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from false [2021-11-03 05:22:49,832 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from true [2021-11-03 05:22:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:49,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:23,047 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-03 05:23:23,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:23,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715512844] [2021-11-03 05:23:23,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/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") [2021-11-03 05:23:23,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [271277083] [2021-11-03 05:23:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:23,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:23:23,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:23:23,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-03 05:23:23,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:23:23,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 05:23:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:23,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:23:23,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@71167421 [2021-11-03 05:23:23,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059824550] [2021-11-03 05:23:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:23,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:23:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:23:23,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:23:23,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 05:23:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:56,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:23:56,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@71167421 [2021-11-03 05:23:56,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:56,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:23:56,566 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:23:56,566 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:23:56,572 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:23:56,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 05:23:56,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:57,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:57,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c3aac-8df5-4e49-a735-4920a756690b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:57,188 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:23:57,197 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:23:57,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:23:57 BoogieIcfgContainer [2021-11-03 05:23:57,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:23:57,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:23:57,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:23:57,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:23:57,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:20:01" (3/4) ... [2021-11-03 05:23:57,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:23:57,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:23:57,233 INFO L168 Benchmark]: Toolchain (without parser) took 238882.22 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:57,234 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:57,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.31 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 44.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:57,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.94 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:57,236 INFO L168 Benchmark]: Boogie Preprocessor took 57.78 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:57,237 INFO L168 Benchmark]: RCFGBuilder took 2349.23 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 31.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:57,238 INFO L168 Benchmark]: TraceAbstraction took 236126.33 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 30.9 MB in the beginning and 47.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:23:57,238 INFO L168 Benchmark]: Witness Printer took 5.02 ms. Allocated memory is still 86.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:23:57,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.31 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 44.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.94 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.78 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2349.23 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 31.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 236126.33 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 30.9 MB in the beginning and 47.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.02 ms. Allocated memory is still 86.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 236.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 199.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 3 QuantifiedInterpolants, 805 SizeOfPredicates, 12 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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