./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:01,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:01,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:01,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:01,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:01,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:01,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:01,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:01,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:01,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:01,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:01,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:01,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:01,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:01,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:01,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:01,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:01,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:01,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:01,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:01,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:01,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:01,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:01,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:01,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:01,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:01,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:01,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:01,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:01,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:01,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:01,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:01,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:01,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:01,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:01,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:01,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:01,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:01,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:01,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:01,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:01,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:23:01,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:01,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:01,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:01,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:01,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:01,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:01,755 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:01,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:01,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:01,756 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:01,757 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:01,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:01,758 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:01,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:01,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:01,759 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:01,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:01,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:01,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:01,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:01,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:01,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:01,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:01,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:01,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:01,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:01,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:01,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:01,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:01,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:01,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:01,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:01,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:01,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:01,765 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:01,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:01,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:01,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:01,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:01,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:01,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:01,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-10-17 17:23:02,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:02,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:02,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:02,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:02,116 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:02,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-10-17 17:23:02,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/4fd31adfd/2ff88a00f49c43a8bb9970952898fa4e/FLAGf79cb335a [2022-10-17 17:23:02,709 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:02,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-10-17 17:23:02,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/4fd31adfd/2ff88a00f49c43a8bb9970952898fa4e/FLAGf79cb335a [2022-10-17 17:23:03,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/4fd31adfd/2ff88a00f49c43a8bb9970952898fa4e [2022-10-17 17:23:03,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:03,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:03,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:03,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:03,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:03,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3078985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03, skipping insertion in model container [2022-10-17 17:23:03,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:03,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:03,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-10-17 17:23:03,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:03,332 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:03,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-10-17 17:23:03,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:03,364 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03 WrapperNode [2022-10-17 17:23:03,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:03,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:03,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:03,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:03,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,395 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-10-17 17:23:03,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:03,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:03,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:03,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:03,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:03,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:03,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:03,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:03,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (1/1) ... [2022-10-17 17:23:03,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:03,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:03,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:03,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:03,578 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:03,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:03,752 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:03,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:03,832 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:23:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03 BoogieIcfgContainer [2022-10-17 17:23:03,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:03,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:03,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:03,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:03,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:03" (1/3) ... [2022-10-17 17:23:03,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c916c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:03, skipping insertion in model container [2022-10-17 17:23:03,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:03" (2/3) ... [2022-10-17 17:23:03,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c916c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:03, skipping insertion in model container [2022-10-17 17:23:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03" (3/3) ... [2022-10-17 17:23:03,844 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-10-17 17:23:03,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:03,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:03,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:03,967 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@748976cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:03,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:03,971 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) [2022-10-17 17:23:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:23:03,979 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:03,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:23:03,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash 67880, now seen corresponding path program 1 times [2022-10-17 17:23:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:04,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430483409] [2022-10-17 17:23:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:23:04,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:23:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:23:04,218 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:23:04,221 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:23:04,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:23:04,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:04,233 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 17:23:04,241 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:23:04,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:23:04 BoogieIcfgContainer [2022-10-17 17:23:04,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:23:04,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:23:04,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:23:04,276 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:23:04,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:03" (3/4) ... [2022-10-17 17:23:04,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:23:04,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:23:04,283 INFO L158 Benchmark]: Toolchain (without parser) took 1196.98ms. Allocated memory is still 109.1MB. Free memory was 70.3MB in the beginning and 55.8MB in the end (delta: 14.5MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2022-10-17 17:23:04,284 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:04,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.02ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 83.8MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:04,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.60ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:04,287 INFO L158 Benchmark]: Boogie Preprocessor took 21.03ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 81.3MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:23:04,292 INFO L158 Benchmark]: RCFGBuilder took 416.81ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 70.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:23:04,293 INFO L158 Benchmark]: TraceAbstraction took 435.70ms. Allocated memory is still 109.1MB. Free memory was 69.4MB in the beginning and 56.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 17:23:04,295 INFO L158 Benchmark]: Witness Printer took 6.58ms. Allocated memory is still 109.1MB. Free memory was 56.1MB in the beginning and 55.8MB in the end (delta: 344.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:04,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.02ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 83.8MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.60ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.03ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 81.3MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 416.81ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 70.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 435.70ms. Allocated memory is still 109.1MB. Free memory was 69.4MB in the beginning and 56.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.58ms. Allocated memory is still 109.1MB. Free memory was 56.1MB in the beginning and 55.8MB in the end (delta: 344.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L25] CALL assume_abort_if_not(I >= 1. && I <= 3.) [L14] COND FALSE !(!cond) [L25] RET assume_abort_if_not(I >= 1. && I <= 3.) [L27] COND FALSE !(I >= 2.) [L28] S = 1.+(I-1.) * (.5+(I-1.) * (-.125+(I-1.)*.0625)) [L30] CALL __VERIFIER_assert(S >= 1. && S <= 2.) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] [L16] reach_error() VAL [\old(cond)=0, cond=0, sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 17:23:04,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:23:06,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:06,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:06,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:06,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:06,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:06,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:06,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:06,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:06,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:06,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:06,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:06,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:06,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:06,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:06,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:06,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:06,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:06,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:06,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:06,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:06,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:06,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:06,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:06,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:06,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:06,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:06,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:06,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:06,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:06,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:06,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:06,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:06,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:06,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:06,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:06,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:06,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:06,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:06,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:06,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:06,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:23:07,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:07,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:07,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:07,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:07,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:07,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:07,026 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:07,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:07,026 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:07,026 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:07,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:07,028 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:07,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:07,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:23:07,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:23:07,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:07,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:07,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:07,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:07,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:23:07,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:23:07,031 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:23:07,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:23:07,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:07,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:07,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:07,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:07,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:23:07,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:07,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:07,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:07,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:07,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:07,035 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:23:07,035 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:23:07,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:07,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:07,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:23:07,036 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_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2022-10-17 17:23:07,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:07,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:07,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:07,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:07,451 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:07,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-10-17 17:23:07,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/9f11a19af/7eb663b7606741baa566302440139593/FLAG3a69ecf9e [2022-10-17 17:23:08,095 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:08,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c [2022-10-17 17:23:08,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/9f11a19af/7eb663b7606741baa566302440139593/FLAG3a69ecf9e [2022-10-17 17:23:08,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/data/9f11a19af/7eb663b7606741baa566302440139593 [2022-10-17 17:23:08,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:08,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:08,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:08,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:08,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:08,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a341564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08, skipping insertion in model container [2022-10-17 17:23:08,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:08,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:08,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-10-17 17:23:08,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:08,702 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:08,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2022-10-17 17:23:08,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:08,734 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:08,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08 WrapperNode [2022-10-17 17:23:08,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:08,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:08,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:08,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:08,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,779 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-10-17 17:23:08,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:08,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:08,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:08,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:08,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:08,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:08,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:08,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:08,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (1/1) ... [2022-10-17 17:23:08,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:08,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:08,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:23:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:08,980 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:08,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:13,389 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:13,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:13,395 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:23:13,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:13 BoogieIcfgContainer [2022-10-17 17:23:13,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:13,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:13,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:13,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:13,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:08" (1/3) ... [2022-10-17 17:23:13,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98851e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:13, skipping insertion in model container [2022-10-17 17:23:13,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:08" (2/3) ... [2022-10-17 17:23:13,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98851e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:13, skipping insertion in model container [2022-10-17 17:23:13,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:13" (3/3) ... [2022-10-17 17:23:13,407 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2022-10-17 17:23:13,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:13,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:13,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:13,486 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ef75f49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:13,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-10-17 17:23:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:23:13,498 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:13,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:13,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-10-17 17:23:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:13,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097006720] [2022-10-17 17:23:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:13,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:13,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:23:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:14,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:23:14,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:14,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:14,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:23:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097006720] [2022-10-17 17:23:14,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097006720] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:14,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:14,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163570703] [2022-10-17 17:23:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:23:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:23:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:23:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:14,674 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:14,688 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-10-17 17:23:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:23:14,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:23:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:14,698 INFO L225 Difference]: With dead ends: 23 [2022-10-17 17:23:14,699 INFO L226 Difference]: Without dead ends: 9 [2022-10-17 17:23:14,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:14,706 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:14,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:23:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-10-17 17:23:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-10-17 17:23:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-10-17 17:23:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-10-17 17:23:14,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-10-17 17:23:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:14,739 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-10-17 17:23:14,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:23:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-10-17 17:23:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:23:14,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:14,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:14,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 17:23:14,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:23:14,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-10-17 17:23:14,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:23:14,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314657094] [2022-10-17 17:23:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:14,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:23:14,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:23:14,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:23:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4318bc-de20-430c-a79d-f86c536a85d1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:23:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:16,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:23:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:33,446 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~I~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.leq |ULTIMATE.start_main_~I~0#1| ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq |ULTIMATE.start_main_~I~0#1| .cse0) (= |c_ULTIMATE.start_main_~S~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode |ULTIMATE.start_main_~I~0#1| .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false