./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- [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-5e519f3 [2022-11-03 03:45:40,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:40,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:40,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:40,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:40,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:40,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:40,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:40,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:40,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:40,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:40,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:40,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:40,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:40,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:40,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:40,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:40,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:40,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:40,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:40,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:40,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:40,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:40,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:40,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:40,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:40,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:40,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:40,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:40,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:40,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:40,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:40,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:40,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:40,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:40,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:40,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:40,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:40,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:40,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:40,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:40,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:45:40,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:40,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:40,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:40,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:40,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:40,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:40,863 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:40,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:40,863 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:40,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:45:40,864 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:40,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:40,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:45:40,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:45:40,865 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:40,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:45:40,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:45:40,866 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:45:40,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:40,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:45:40,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:45:40,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:45:40,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:40,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:40,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:40,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:40,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:45:40,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:40,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:40,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:40,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:40,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:40,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:40,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:40,871 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:45:40,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:40,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:40,872 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:45:40,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:45:40,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:40,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:40,873 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2022-11-03 03:45:41,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:41,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:41,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:41,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:41,247 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:41,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:41,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/06d6cc80a/bb11c20949804447b249fb5cf9dfa035/FLAGfe4b82fb8 [2022-11-03 03:45:41,989 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:41,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:42,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/06d6cc80a/bb11c20949804447b249fb5cf9dfa035/FLAGfe4b82fb8 [2022-11-03 03:45:42,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/06d6cc80a/bb11c20949804447b249fb5cf9dfa035 [2022-11-03 03:45:42,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:42,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:42,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:42,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:42,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:42,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59029edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42, skipping insertion in model container [2022-11-03 03:45:42,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:42,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:42,575 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2022-11-03 03:45:42,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:42,650 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:42,668 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2022-11-03 03:45:42,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:42,716 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:42,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42 WrapperNode [2022-11-03 03:45:42,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:42,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:42,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:42,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:42,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,778 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-11-03 03:45:42,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:42,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:42,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:42,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:42,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:42,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:42,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:42,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:42,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:42,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:42,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:45:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:43,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:43,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:43,270 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:43,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:43,348 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:45:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:43 BoogieIcfgContainer [2022-11-03 03:45:43,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:43,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:43,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:43,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:43,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:42" (1/3) ... [2022-11-03 03:45:43,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e4ec86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:43, skipping insertion in model container [2022-11-03 03:45:43,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42" (2/3) ... [2022-11-03 03:45:43,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e4ec86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:43, skipping insertion in model container [2022-11-03 03:45:43,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:43" (3/3) ... [2022-11-03 03:45:43,363 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:43,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:43,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:45:43,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:43,451 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;@1c108f09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:43,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:45:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:45:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:45:43,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:43,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:45:43,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash 88161564, now seen corresponding path program 1 times [2022-11-03 03:45:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:43,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131584223] [2022-11-03 03:45:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:45:43,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:45:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:45:43,768 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:45:43,771 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:45:43,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:45:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:45:43,783 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:45:43,790 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:45:43,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:45:43 BoogieIcfgContainer [2022-11-03 03:45:43,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:45:43,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:45:43,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:45:43,833 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:45:43,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:43" (3/4) ... [2022-11-03 03:45:43,839 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:45:43,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:45:43,843 INFO L158 Benchmark]: Toolchain (without parser) took 1515.29ms. Allocated memory is still 115.3MB. Free memory was 77.0MB in the beginning and 58.1MB in the end (delta: 18.8MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,844 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:45:43,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.21ms. Allocated memory is still 115.3MB. Free memory was 76.8MB in the beginning and 90.0MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.39ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:45:43,847 INFO L158 Benchmark]: Boogie Preprocessor took 63.73ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 87.2MB in the end (delta: 996.1kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,853 INFO L158 Benchmark]: RCFGBuilder took 505.97ms. Allocated memory is still 115.3MB. Free memory was 87.2MB in the beginning and 73.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,853 INFO L158 Benchmark]: TraceAbstraction took 475.09ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 58.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,855 INFO L158 Benchmark]: Witness Printer took 7.91ms. Allocated memory is still 115.3MB. Free memory was 58.5MB in the beginning and 58.1MB in the end (delta: 349.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:45:43,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.21ms. Allocated memory is still 115.3MB. Free memory was 76.8MB in the beginning and 90.0MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.39ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.73ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 87.2MB in the end (delta: 996.1kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 505.97ms. Allocated memory is still 115.3MB. Free memory was 87.2MB in the beginning and 73.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 475.09ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 58.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 7.91ms. Allocated memory is still 115.3MB. Free memory was 58.5MB in the beginning and 58.1MB in the end (delta: 349.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 53. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. VAL [_EPS=1/1000000, d=1, epsilon=1/100000000] [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L49] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L51] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [\old(Input)=54, _EPS=1/1000000, cond=0, i=0, Input=54, xn=1, xn=1] [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] RET, EXPR SqrtR(dd) [L51] r = SqrtR(dd) [L53] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L13] reach_error() VAL [\old(cond)=0, _EPS=1/1000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 03:45:43,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- [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-5e519f3 [2022-11-03 03:45:46,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:46,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:46,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:46,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:46,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:46,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:46,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:46,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:46,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:46,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:46,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:46,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:46,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:46,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:46,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:46,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:46,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:46,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:46,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:46,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:46,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:46,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:46,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:46,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:46,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:46,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:46,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:46,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:46,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:46,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:46,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:46,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:46,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:46,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:46,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:46,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:46,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:46,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:46,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:46,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:46,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 03:45:46,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:46,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:46,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:46,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:46,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:46,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:46,818 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:46,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:46,818 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:46,819 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:46,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:46,820 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:46,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:46,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:45:46,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:45:46,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:46,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:46,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:46,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:46,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:45:46,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:45:46,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:45:46,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:45:46,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:46,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:46,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:46,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:46,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:45:46,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:46,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:46,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:46,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:46,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:46,828 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:45:46,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:46,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:46,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:46,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:45:46,829 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2022-11-03 03:45:47,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:47,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:47,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:47,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:47,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:47,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:47,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/e70f04a13/f64ea1ac33f24b1e95762101a954f2b0/FLAGb05b402db [2022-11-03 03:45:48,087 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:48,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:48,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/e70f04a13/f64ea1ac33f24b1e95762101a954f2b0/FLAGb05b402db [2022-11-03 03:45:48,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/data/e70f04a13/f64ea1ac33f24b1e95762101a954f2b0 [2022-11-03 03:45:48,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:48,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:48,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:48,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:48,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:48,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597f60cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48, skipping insertion in model container [2022-11-03 03:45:48,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:48,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:48,651 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2022-11-03 03:45:48,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:48,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:48,750 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_d8c70026-4985-45d0-b9cc-e15e75bb1c79/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2022-11-03 03:45:48,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:48,794 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:48,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48 WrapperNode [2022-11-03 03:45:48,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:48,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:48,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:48,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:48,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,860 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-11-03 03:45:48,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:48,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:48,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:48,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:48,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:48,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:48,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:48,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:48,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (1/1) ... [2022-11-03 03:45:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:48,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:48,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:48,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:45:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:49,103 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:49,105 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:59,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:59,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:59,330 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:45:59,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:59 BoogieIcfgContainer [2022-11-03 03:45:59,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:59,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:59,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:59,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:59,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:48" (1/3) ... [2022-11-03 03:45:59,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc14e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:59, skipping insertion in model container [2022-11-03 03:45:59,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:48" (2/3) ... [2022-11-03 03:45:59,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc14e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:59, skipping insertion in model container [2022-11-03 03:45:59,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:59" (3/3) ... [2022-11-03 03:45:59,345 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2022-11-03 03:45:59,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:59,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:45:59,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:59,441 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;@46b00b20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:59,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:45:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:45:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:45:59,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:59,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:59,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2022-11-03 03:45:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:59,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658605181] [2022-11-03 03:45:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:59,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:59,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:59,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:59,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:46:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:01,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 03:46:01,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:01,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:01,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658605181] [2022-11-03 03:46:01,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658605181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:01,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:01,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:46:01,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546417022] [2022-11-03 03:46:01,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:01,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:46:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:46:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:46:01,640 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:01,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:01,657 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2022-11-03 03:46:01,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:46:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:46:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:01,666 INFO L225 Difference]: With dead ends: 36 [2022-11-03 03:46:01,667 INFO L226 Difference]: Without dead ends: 15 [2022-11-03 03:46:01,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:46:01,674 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:01,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-03 03:46:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-03 03:46:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-03 03:46:01,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2022-11-03 03:46:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-03 03:46:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-03 03:46:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:46:01,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:01,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:01,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 03:46:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:01,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2022-11-03 03:46:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008139504] [2022-11-03 03:46:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:01,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:01,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:01,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:01,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:46:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:03,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:46:03,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:04,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:04,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:04,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008139504] [2022-11-03 03:46:04,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008139504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:04,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:04,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863527461] [2022-11-03 03:46:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:04,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:46:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:46:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:04,923 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:08,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:10,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:13,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:16,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:18,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:19,680 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-03 03:46:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:46:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:46:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:19,687 INFO L225 Difference]: With dead ends: 34 [2022-11-03 03:46:19,687 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 03:46:19,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:19,690 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:19,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2022-11-03 03:46:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 03:46:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 03:46:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-03 03:46:19,698 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2022-11-03 03:46:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-03 03:46:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-03 03:46:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:46:19,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:19,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:19,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:19,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:19,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2022-11-03 03:46:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:19,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650531714] [2022-11-03 03:46:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:19,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:19,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:19,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:19,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:46:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:24,372 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 03:46:24,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:44,734 WARN L833 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0)) c_~_EPS~0) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= |c_ULTIMATE.start_SqrtR_~xn~0#1| (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 03:46:54,846 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:46:59,898 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:08,430 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:18,521 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:23,574 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:28,668 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:33,749 WARN L234 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:47:38,809 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:48:02,641 WARN L234 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:48:07,709 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:48:12,737 WARN L234 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:48:20,645 WARN L833 $PredicateComparison]: unable to prove that (and (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (.cse2 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse6))) (or (and (or (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse4 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (let ((.cse5 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode .cse2 .cse5) (fp.mul c_currentRoundingMode .cse6 .cse5))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv1 32))) (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse7 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse9 (fp.add c_currentRoundingMode .cse7 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse8 (fp.mul c_currentRoundingMode .cse2 .cse9))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse7 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (not (fp.gt .cse8 (fp.mul c_currentRoundingMode .cse6 .cse9))) (not (fp.lt .cse8 |ULTIMATE.start_SqrtR_~linf~0#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 03:48:22,800 WARN L855 $PredicateComparison]: unable to prove that (and (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (.cse2 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse6))) (or (and (or (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|)) |ULTIMATE.start_SqrtR_~linf~0#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)))) (exists ((|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse4 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (let ((.cse5 (fp.add c_currentRoundingMode .cse4 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (fp.gt (fp.mul c_currentRoundingMode .cse2 .cse5) (fp.mul c_currentRoundingMode .cse6 .cse5))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv1 32))) (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse7 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse9 (fp.add c_currentRoundingMode .cse7 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse8 (fp.mul c_currentRoundingMode .cse2 .cse9))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse7 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (not (fp.gt .cse8 (fp.mul c_currentRoundingMode .cse6 .cse9))) (not (fp.lt .cse8 |ULTIMATE.start_SqrtR_~linf~0#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse3)))))) (= |c_ULTIMATE.start_SqrtR_~cond~0#1| (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-11-03 03:48:32,689 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:48:49,695 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|))) (let ((.cse2 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (= .cse1 |c_ULTIMATE.start_SqrtR_~xnp1~0#1|) (not (fp.gt .cse2 (fp.mul c_currentRoundingMode .cse3 .cse4))) (not (fp.lt .cse2 |ULTIMATE.start_SqrtR_~linf~0#1|)) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 03:48:55,214 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:01,218 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:07,239 WARN L234 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:13,507 WARN L234 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:19,390 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:21,836 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_SqrtR_~linf~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_SqrtR_~Input#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.div c_currentRoundingMode .cse0 |ULTIMATE.start_SqrtR_~Input#1|))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse4 (fp.add c_currentRoundingMode .cse2 .cse2))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse3) .cse4))) (and (not (fp.leq |ULTIMATE.start_SqrtR_~Input#1| .cse0)) (not (fp.lt .cse1 |ULTIMATE.start_SqrtR_~linf~0#1|)) (= (fp.div c_currentRoundingMode .cse0 .cse2) |c_ULTIMATE.start_SqrtR_#res#1|) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse3 .cse4))) (fp.leq |ULTIMATE.start_SqrtR_~Input#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-03 03:49:32,853 WARN L234 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:38,290 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:44,359 WARN L234 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:50,337 WARN L234 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:49:56,666 WARN L234 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:05,290 WARN L234 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:11,115 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:16,367 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:22,033 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:27,991 WARN L234 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:36,348 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:42,613 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:48,374 WARN L234 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:54,159 WARN L234 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:50:59,979 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:51:05,873 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:51:07,371 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-03 03:51:07,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:07,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650531714] [2022-11-03 03:51:07,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/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") [2022-11-03 03:51:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1960650360] [2022-11-03 03:51:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:51:07,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:51:07,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-03 03:51:07,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 03:51:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:12,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:51:12,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:12,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-03 03:51:12,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292715691] [2022-11-03 03:51:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:12,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:12,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:12,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:12,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:52:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:09,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:52:09,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:09,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-03 03:52:09,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:09,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-03 03:52:09,107 ERROR L170 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2022-11-03 03:52:09,107 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-03 03:52:09,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:52:09,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:09,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:09,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:09,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c70026-4985-45d0-b9cc-e15e75bb1c79/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:52:09,735 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-03 03:52:09,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:52:09,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:52:09 BoogieIcfgContainer [2022-11-03 03:52:09,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:52:09,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:52:09,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:52:09,756 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:52:09,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:59" (3/4) ... [2022-11-03 03:52:09,760 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:52:09,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:52:09,761 INFO L158 Benchmark]: Toolchain (without parser) took 381312.32ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 36.5MB in the end (delta: -2.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-03 03:52:09,762 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:52:09,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.84ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.0MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 03:52:09,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.09ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 37.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:52:09,763 INFO L158 Benchmark]: Boogie Preprocessor took 34.49ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 35.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:52:09,764 INFO L158 Benchmark]: RCFGBuilder took 10436.64ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.7MB in the beginning and 50.4MB in the end (delta: -14.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-11-03 03:52:09,764 INFO L158 Benchmark]: TraceAbstraction took 370418.85ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 36.6MB in the end (delta: 13.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-03 03:52:09,765 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 69.2MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 184.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:52:09,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.84ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 39.0MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.09ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 37.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.49ms. Allocated memory is still 56.6MB. Free memory was 37.3MB in the beginning and 35.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10436.64ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.7MB in the beginning and 50.4MB in the end (delta: -14.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 370418.85ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 36.6MB in the end (delta: 13.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 69.2MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 184.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L11] COND FALSE !(!cond) [L49] RET assume_abort_if_not(dd >= d-epsilon && dd <= d+epsilon) [L51] CALL, EXPR SqrtR(dd) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] RET, EXPR SqrtR(dd) [L51] r = SqrtR(dd) [L53] CALL __VERIFIER_assert(r >= 0.9 && r <= 5.) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 370.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 13.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 284.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 7 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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