./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 0e0057cc 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_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:25,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:25,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:02:25,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:25,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:25,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:25,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:25,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:25,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:25,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:25,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:25,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:25,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:25,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:25,328 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:25,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:25,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:02:25,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:25,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:02:25,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:25,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:25,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:02:25,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:25,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:02:25,335 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:25,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:02:25,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:25,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:25,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:25,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:25,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:25,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:25,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:25,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:25,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:02:25,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:02:25,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:02:25,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:25,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:25,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:02:25,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:25,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:25,342 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2023-11-24 22:02:25,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:25,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:25,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:25,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:25,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:25,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:29,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:29,229 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:29,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:29,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/1321be6b6/92d40b32ae3e465aad6c261e64f84002/FLAGb0b132af0 [2023-11-24 22:02:29,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/1321be6b6/92d40b32ae3e465aad6c261e64f84002 [2023-11-24 22:02:29,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:29,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:29,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:29,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:29,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:29,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a1551c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29, skipping insertion in model container [2023-11-24 22:02:29,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:29,517 WARN L240 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_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2023-11-24 22:02:29,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:29,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:29,583 WARN L240 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_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2023-11-24 22:02:29,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:29,624 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:29,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29 WrapperNode [2023-11-24 22:02:29,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:29,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:29,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:29,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:29,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,675 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-11-24 22:02:29,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:29,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:29,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:29,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:29,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,719 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 22:02:29,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:29,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:29,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:29,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:29,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (1/1) ... [2023-11-24 22:02:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:29,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:29,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:29,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:02:29,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:29,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:29,930 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:29,933 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:30,081 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:30,108 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:30,109 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:02:30,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:30 BoogieIcfgContainer [2023-11-24 22:02:30,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:30,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:30,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:30,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:30,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:29" (1/3) ... [2023-11-24 22:02:30,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d92c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:30, skipping insertion in model container [2023-11-24 22:02:30,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:29" (2/3) ... [2023-11-24 22:02:30,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d92c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:30, skipping insertion in model container [2023-11-24 22:02:30,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:30" (3/3) ... [2023-11-24 22:02:30,120 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:30,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:30,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:02:30,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:30,199 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7a423311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:30,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:02:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:02:30,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:30,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:30,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:30,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1989645552, now seen corresponding path program 1 times [2023-11-24 22:02:30,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:30,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710499134] [2023-11-24 22:02:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:30,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:30,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710499134] [2023-11-24 22:02:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710499134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:30,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:02:30,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900103470] [2023-11-24 22:02:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:02:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:02:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:30,456 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-24 22:02:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:30,490 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-11-24 22:02:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:02:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2023-11-24 22:02:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:30,501 INFO L225 Difference]: With dead ends: 27 [2023-11-24 22:02:30,501 INFO L226 Difference]: Without dead ends: 12 [2023-11-24 22:02:30,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:30,509 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:30,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:02:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-24 22:02:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-24 22:02:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2023-11-24 22:02:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-24 22:02:30,543 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-11-24 22:02:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:30,543 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-24 22:02:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-24 22:02:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-24 22:02:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:02:30,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:30,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:02:30,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:30,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1180179762, now seen corresponding path program 1 times [2023-11-24 22:02:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:30,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146995632] [2023-11-24 22:02:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:02:30,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:02:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:02:30,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:02:30,645 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:02:30,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 22:02:30,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:02:30,652 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 22:02:30,656 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:02:30,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:02:30 BoogieIcfgContainer [2023-11-24 22:02:30,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:02:30,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:02:30,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:02:30,679 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:02:30,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:30" (3/4) ... [2023-11-24 22:02:30,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 22:02:30,682 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:02:30,683 INFO L158 Benchmark]: Toolchain (without parser) took 1425.10ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 120.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-24 22:02:30,684 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:30,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.02ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 112.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:02:30,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:30,685 INFO L158 Benchmark]: Boogie Preprocessor took 69.74ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:02:30,686 INFO L158 Benchmark]: RCFGBuilder took 362.08ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 97.2MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 22:02:30,686 INFO L158 Benchmark]: TraceAbstraction took 564.90ms. Allocated memory is still 167.8MB. Free memory was 96.7MB in the beginning and 121.3MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:30,687 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 120.6MB in the end (delta: 686.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:30,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.02ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 112.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 69.74ms. Allocated memory is still 167.8MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.08ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 97.2MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 564.90ms. Allocated memory is still 167.8MB. Free memory was 96.7MB in the beginning and 121.3MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 120.6MB in the end (delta: 686.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38. 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) VAL [\old(cond)=1, _EPS=1/1000000, cond=1] [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; VAL [Input=53, \old(Input)=53, _EPS=1/1000000] [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 VAL [Input=53, \old(Input)=53, _EPS=1/1000000, xn=1] [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 [Input=53, \old(Input)=53, _EPS=1/1000000, cond=0, i=0, xn=1, xn=1] [L28] COND FALSE !(\read(cond)) VAL [Input=53, \old(Input)=53, _EPS=1/1000000, cond=0, i=0, xn=1, xn=1] [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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-24 22:02:30,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:33,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:33,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-24 22:02:33,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:33,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:33,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:33,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:33,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:33,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:33,462 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:33,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:33,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:33,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:33,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:33,466 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:33,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:33,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:02:33,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:33,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:33,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:33,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:02:33,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:33,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:02:33,472 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:02:33,473 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:02:33,473 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:02:33,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:33,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:02:33,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:33,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:33,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:33,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:33,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:33,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:33,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:33,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:33,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:02:33,478 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 22:02:33,479 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:02:33,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:33,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:33,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:02:33,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:33,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:33,481 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 22:02:33,481 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2023-11-24 22:02:33,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:33,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:33,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:33,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:33,852 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:33,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:36,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:37,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:37,264 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:37,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/9af152396/ce5bfc4bbc574859907d960a198de85e/FLAGac3d8f814 [2023-11-24 22:02:37,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/data/9af152396/ce5bfc4bbc574859907d960a198de85e [2023-11-24 22:02:37,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:37,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:37,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:37,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:37,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:37,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a04f9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37, skipping insertion in model container [2023-11-24 22:02:37,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:37,502 WARN L240 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_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2023-11-24 22:02:37,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:37,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:37,587 WARN L240 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_eb7b2d79-147e-41f7-b051-a828f643a657/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2023-11-24 22:02:37,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:37,647 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:37,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37 WrapperNode [2023-11-24 22:02:37,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:37,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:37,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:37,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:37,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,727 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2023-11-24 22:02:37,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:37,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:37,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:37,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:37,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,782 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 22:02:37,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:37,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:37,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:37,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:37,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (1/1) ... [2023-11-24 22:02:37,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:37,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:37,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 22:02:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:38,037 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:38,040 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:55,345 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:55,380 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:55,380 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:02:55,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:55 BoogieIcfgContainer [2023-11-24 22:02:55,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:55,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:55,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:55,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:55,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:37" (1/3) ... [2023-11-24 22:02:55,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f776aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:55, skipping insertion in model container [2023-11-24 22:02:55,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:37" (2/3) ... [2023-11-24 22:02:55,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f776aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:55, skipping insertion in model container [2023-11-24 22:02:55,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:55" (3/3) ... [2023-11-24 22:02:55,401 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2023-11-24 22:02:55,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:55,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:02:55,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:55,479 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6f626485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:55,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:02:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:55,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:02:55,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:55,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:55,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:55,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1989645552, now seen corresponding path program 1 times [2023-11-24 22:02:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:02:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512851081] [2023-11-24 22:02:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:55,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:02:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:02:55,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:02:55,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 22:02:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:57,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 22:02:57,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:02:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:57,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:02:57,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:02:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512851081] [2023-11-24 22:02:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512851081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:02:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482848536] [2023-11-24 22:02:57,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:57,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:02:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:02:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:02:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:57,210 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-24 22:02:59,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:02:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:59,860 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-11-24 22:02:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:02:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2023-11-24 22:02:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:59,875 INFO L225 Difference]: With dead ends: 27 [2023-11-24 22:02:59,875 INFO L226 Difference]: Without dead ends: 12 [2023-11-24 22:02:59,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:59,881 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:59,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 22:02:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-24 22:02:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-24 22:02:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2023-11-24 22:02:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-24 22:02:59,912 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-11-24 22:02:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:59,912 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-24 22:02:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-24 22:02:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-24 22:02:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:02:59,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:59,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:59,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:03:00,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:03:00,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:00,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1180179762, now seen corresponding path program 1 times [2023-11-24 22:03:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:03:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300028712] [2023-11-24 22:03:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:03:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:03:00,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 22:03:00,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb7b2d79-147e-41f7-b051-a828f643a657/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 22:03:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:01,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 22:03:01,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:03:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:03:02,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:03:02,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:03:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300028712] [2023-11-24 22:03:02,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300028712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:03:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987375311] [2023-11-24 22:03:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:03:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:03:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:03:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:03:02,553 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2023-11-24 22:03:08,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:12,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:14,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:18,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:22,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:26,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:32,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-24 22:03:36,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []