./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:41,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:41,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:06:41,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:41,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:41,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:41,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:41,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:41,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:41,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:41,932 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:41,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:41,934 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:41,935 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:06:41,936 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:41,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:41,937 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:06:41,938 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:06:41,938 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:41,939 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:06:41,939 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:06:41,940 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:06:41,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:41,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:06:41,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:41,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:06:41,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:41,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:41,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:06:41,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:41,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:06:41,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:41,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:06:41,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:41,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:41,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:41,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:41,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:41,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:41,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:06:41,948 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:06:41,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:06:41,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:06:41,949 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:41,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:41,949 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2023-11-06 21:06:42,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:42,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:42,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:42,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:42,321 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:42,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2023-11-06 21:06:45,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:45,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:45,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2023-11-06 21:06:45,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/28e018b8c/aa5f790c9cb9418fabc63a5325024e1b/FLAGccacbbcbc [2023-11-06 21:06:45,793 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/28e018b8c/aa5f790c9cb9418fabc63a5325024e1b [2023-11-06 21:06:45,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:45,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:45,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:45,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:45,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:45,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:45" (1/1) ... [2023-11-06 21:06:45,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be44a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:45, skipping insertion in model container [2023-11-06 21:06:45,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:45" (1/1) ... [2023-11-06 21:06:45,841 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:06:46,038 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2023-11-06 21:06:46,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:46,072 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:06:46,085 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2023-11-06 21:06:46,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:46,109 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:06:46,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46 WrapperNode [2023-11-06 21:06:46,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:46,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:46,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:06:46,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:06:46,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,147 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-06 21:06:46,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:46,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:06:46,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:06:46,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:06:46,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:06:46,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:06:46,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:06:46,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:06:46,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (1/1) ... [2023-11-06 21:06:46,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:46,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:06:46,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:06:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:06:46,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:06:46,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:06:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:06:46,319 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:06:46,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:06:46,463 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:06:46,510 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:06:46,510 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:06:46,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:46 BoogieIcfgContainer [2023-11-06 21:06:46,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:06:46,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:06:46,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:06:46,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:06:46,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:06:45" (1/3) ... [2023-11-06 21:06:46,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66582ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:46, skipping insertion in model container [2023-11-06 21:06:46,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:46" (2/3) ... [2023-11-06 21:06:46,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66582ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:46, skipping insertion in model container [2023-11-06 21:06:46,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:46" (3/3) ... [2023-11-06 21:06:46,524 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2023-11-06 21:06:46,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:06:46,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:06:46,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:06:46,606 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;@683c384b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:06:46,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:06:46,610 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) [2023-11-06 21:06:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 21:06:46,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:46,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:06:46,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:06:46,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash 82255995, now seen corresponding path program 1 times [2023-11-06 21:06:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789533070] [2023-11-06 21:06:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:06:46,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:06:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:06:46,798 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 21:06:46,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:06:46,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:06:46,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:06:46,809 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 21:06:46,814 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:06:46,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:06:46 BoogieIcfgContainer [2023-11-06 21:06:46,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:06:46,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:06:46,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:06:46,848 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:06:46,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:46" (3/4) ... [2023-11-06 21:06:46,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:06:46,855 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:06:46,857 INFO L158 Benchmark]: Toolchain (without parser) took 1053.36ms. Allocated memory is still 174.1MB. Free memory was 129.5MB in the beginning and 88.6MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-06 21:06:46,857 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:46,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.91ms. Allocated memory is still 174.1MB. Free memory was 129.5MB in the beginning and 118.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:06:46,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.90ms. Allocated memory is still 174.1MB. Free memory was 118.3MB in the beginning and 116.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:46,859 INFO L158 Benchmark]: Boogie Preprocessor took 27.02ms. Allocated memory is still 174.1MB. Free memory was 116.9MB in the beginning and 115.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:06:46,860 INFO L158 Benchmark]: RCFGBuilder took 337.75ms. Allocated memory is still 174.1MB. Free memory was 115.3MB in the beginning and 103.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:06:46,861 INFO L158 Benchmark]: TraceAbstraction took 327.20ms. Allocated memory is still 174.1MB. Free memory was 102.2MB in the beginning and 88.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:06:46,861 INFO L158 Benchmark]: Witness Printer took 8.02ms. Allocated memory is still 174.1MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 3.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:46,865 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.91ms. Allocated memory is still 174.1MB. Free memory was 129.5MB in the beginning and 118.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.90ms. Allocated memory is still 174.1MB. Free memory was 118.3MB in the beginning and 116.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.02ms. Allocated memory is still 174.1MB. Free memory was 116.9MB in the beginning and 115.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.75ms. Allocated memory is still 174.1MB. Free memory was 115.3MB in the beginning and 103.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 327.20ms. Allocated memory is still 174.1MB. Free memory was 102.2MB in the beginning and 88.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 8.02ms. Allocated memory is still 174.1MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 3.7kB). 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: 20]: 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 someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 55. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000, d=1] [L51] COND TRUE d <= 20. [L53] CALL, EXPR SqrtR(d) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [Input=1, \old(Input)=1, _EPS=1/1000000, cond=0, i=0, xn=1, xn=1] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L53] RET, EXPR SqrtR(d) [L53] r = SqrtR(d) [L55] CALL __VERIFIER_assert(r >= 1.0 && r <= 5.0) [L20] COND TRUE !(cond) VAL [\old(cond)=0, _EPS=1/1000000, cond=0] [L20] 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: 0.2s, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 21:06:46,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/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_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp --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 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:49,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:49,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-06 21:06:49,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:49,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:49,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:49,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:49,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:49,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:49,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:49,847 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:49,847 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:49,847 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:49,849 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:49,850 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:49,850 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:49,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:49,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:06:49,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:49,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:49,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:49,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:06:49,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:49,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:06:49,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:06:49,855 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:06:49,855 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:06:49,856 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:49,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:06:49,857 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:49,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:49,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:06:49,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:49,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:49,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:49,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:49,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:06:49,860 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:06:49,860 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:06:49,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:06:49,861 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:49,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:49,868 INFO L153 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736ab1a5e950f94d10703cde0979d12465a57eb1332dc067f0dbd06f88e9370a [2023-11-06 21:06:50,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:50,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:50,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:50,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:50,334 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:50,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2023-11-06 21:06:53,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:53,619 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:53,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2023-11-06 21:06:53,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/45659a4b4/b1ab07cd5a964527868d53936f6a69a0/FLAG7d90f72fb [2023-11-06 21:06:53,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/data/45659a4b4/b1ab07cd5a964527868d53936f6a69a0 [2023-11-06 21:06:53,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:53,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:53,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:53,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:53,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:53,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:53" (1/1) ... [2023-11-06 21:06:53,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a9dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:53, skipping insertion in model container [2023-11-06 21:06:53,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:53" (1/1) ... [2023-11-06 21:06:53,704 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:06:53,901 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2023-11-06 21:06:53,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:53,967 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:06:53,983 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_d21b5fcf-2bc0-4413-bac2-d29043222c25/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c[831,844] [2023-11-06 21:06:54,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:54,030 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:06:54,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54 WrapperNode [2023-11-06 21:06:54,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:54,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:54,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:06:54,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:06:54,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,094 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-11-06 21:06:54,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:54,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:06:54,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:06:54,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:06:54,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:06:54,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:06:54,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:06:54,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:06:54,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (1/1) ... [2023-11-06 21:06:54,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:54,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:06:54,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:06:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:06:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:06:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:06:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:06:54,392 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:06:54,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:03,657 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:03,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:03,667 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:07:03,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:03 BoogieIcfgContainer [2023-11-06 21:07:03,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:03,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:03,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:03,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:03,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:06:53" (1/3) ... [2023-11-06 21:07:03,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a560de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:03, skipping insertion in model container [2023-11-06 21:07:03,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:54" (2/3) ... [2023-11-06 21:07:03,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a560de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:03, skipping insertion in model container [2023-11-06 21:07:03,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:03" (3/3) ... [2023-11-06 21:07:03,682 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2023-11-06 21:07:03,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:03,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:07:03,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:03,772 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;@380047f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:03,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:07:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-11-06 21:07:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 21:07:03,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:03,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:03,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:07:03,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2023-11-06 21:07:03,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:07:03,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357462182] [2023-11-06 21:07:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:03,810 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 [2023-11-06 21:07:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:07:03,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:07:03,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d21b5fcf-2bc0-4413-bac2-d29043222c25/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:07:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:05,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:07:05,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:07:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:06,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:07:06,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:07:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357462182] [2023-11-06 21:07:06,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357462182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:06,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:06,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361343560] [2023-11-06 21:07:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:06,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:07:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:06,257 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 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) [2023-11-06 21:07:09,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:11,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:13,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:15,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:18,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:20,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:22,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 21:07:25,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []