./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:38:15,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:38:15,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:38:15,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:38:15,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:38:15,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:38:15,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:38:15,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:38:15,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:38:15,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:38:15,310 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:38:15,310 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:38:15,311 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:38:15,311 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:38:15,311 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:38:15,311 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:38:15,311 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:38:15,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:38:15,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:38:15,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:38:15,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:38:15,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:38:15,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:38:15,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:38:15,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:38:15,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:38:15,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:38:15,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:38:15,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:38:15,315 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E 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 -> 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 -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2024-11-13 23:38:15,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:38:15,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:38:15,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:38:15,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:38:15,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:38:15,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c Unable to find full path for "g++" [2024-11-13 23:38:17,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:38:17,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:38:17,926 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2024-11-13 23:38:17,934 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/47611a287/bcb3bda8f68d4264adfd6160ca288f60/FLAGd360a80d5 [2024-11-13 23:38:17,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/47611a287/bcb3bda8f68d4264adfd6160ca288f60 [2024-11-13 23:38:17,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:38:17,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:38:17,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:38:17,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:38:17,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:38:17,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:38:17" (1/1) ... [2024-11-13 23:38:17,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4d8786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:17, skipping insertion in model container [2024-11-13 23:38:17,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:38:17" (1/1) ... [2024-11-13 23:38:17,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:38:18,150 WARN L250 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2024-11-13 23:38:18,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:38:18,193 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:38:18,201 WARN L250 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2024-11-13 23:38:18,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:38:18,227 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:38:18,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18 WrapperNode [2024-11-13 23:38:18,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:38:18,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:38:18,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:38:18,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:38:18,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,262 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 90 [2024-11-13 23:38:18,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:38:18,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:38:18,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:38:18,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:38:18,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:38:18,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:38:18,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:38:18,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:38:18,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (1/1) ... [2024-11-13 23:38:18,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:38:18,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:38:18,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:38:18,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:38:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:38:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:38:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:38:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-13 23:38:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:38:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-13 23:38:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:38:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:38:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:38:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:38:18,446 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:38:18,448 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:38:18,660 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-13 23:38:18,660 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:38:18,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:38:18,932 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 23:38:18,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:18 BoogieIcfgContainer [2024-11-13 23:38:18,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:38:18,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:38:18,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:38:18,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:38:18,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:38:17" (1/3) ... [2024-11-13 23:38:18,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212968d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:38:18, skipping insertion in model container [2024-11-13 23:38:18,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:18" (2/3) ... [2024-11-13 23:38:18,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212968d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:38:18, skipping insertion in model container [2024-11-13 23:38:18,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:18" (3/3) ... [2024-11-13 23:38:18,948 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2024-11-13 23:38:18,963 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:38:18,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sqrt_poly2.c that has 1 procedures, 6 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:38:19,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:38:19,022 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@e43b5fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:38:19,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:38:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:38:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 23:38:19,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:38:19,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 23:38:19,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:38:19,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:38:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash 124898, now seen corresponding path program 1 times [2024-11-13 23:38:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:38:19,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75444590] [2024-11-13 23:38:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:38:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 23:38:19,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 23:38:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 23:38:19,258 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-13 23:38:19,260 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 23:38:19,261 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 23:38:19,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:38:19,268 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-13 23:38:19,286 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 23:38:19,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 11:38:19 BoogieIcfgContainer [2024-11-13 23:38:19,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 23:38:19,290 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 23:38:19,290 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 23:38:19,290 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 23:38:19,291 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:18" (3/4) ... [2024-11-13 23:38:19,293 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 23:38:19,294 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 23:38:19,295 INFO L158 Benchmark]: Toolchain (without parser) took 1345.72ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 60.4MB in the end (delta: 58.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-13 23:38:19,295 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:38:19,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.62ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 107.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:38:19,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.95ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 105.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:38:19,297 INFO L158 Benchmark]: Boogie Preprocessor took 22.15ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.8MB in the end (delta: 961.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:38:19,297 INFO L158 Benchmark]: RCFGBuilder took 646.78ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 79.0MB in the end (delta: 25.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 23:38:19,298 INFO L158 Benchmark]: TraceAbstraction took 354.79ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 60.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 23:38:19,298 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 142.6MB. Free memory was 60.7MB in the beginning and 60.4MB in the end (delta: 348.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:38:19,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.62ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 107.3MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.95ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 105.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.15ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.8MB in the end (delta: 961.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 646.78ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 79.0MB in the end (delta: 25.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 354.79ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 60.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 142.6MB. Free memory was 60.7MB in the beginning and 60.4MB in the end (delta: 348.9kB). 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: 14]: 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 39, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 61. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] EXPR x.i[0] & 0x7FF00000 [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] EXPR x.i[0] & 0x800FFFFF [L38] EXPR (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r [L43] COND TRUE exp % 2 == 0 [L44] exp++ [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 23:38:19,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:38:21,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:38:22,041 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-13 23:38:22,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:38:22,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:38:22,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:38:22,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:38:22,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:38:22,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:38:22,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:38:22,131 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:38:22,131 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:38:22,131 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:38:22,131 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:38:22,131 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:38:22,132 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:38:22,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:38:22,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:38:22,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 23:38:22,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:38:22,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:38:22,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E 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 -> 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 -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2024-11-13 23:38:22,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:38:22,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:38:22,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:38:22,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:38:22,458 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:38:22,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c Unable to find full path for "g++" [2024-11-13 23:38:24,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:38:24,757 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:38:24,758 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2024-11-13 23:38:24,772 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/46f8fad32/8b9a91992ffd4e8ca33240c692501dc1/FLAG63e200b2c [2024-11-13 23:38:24,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/data/46f8fad32/8b9a91992ffd4e8ca33240c692501dc1 [2024-11-13 23:38:24,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:38:24,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:38:24,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:38:24,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:38:24,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:38:24,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:38:24" (1/1) ... [2024-11-13 23:38:24,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bea97c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:24, skipping insertion in model container [2024-11-13 23:38:24,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:38:24" (1/1) ... [2024-11-13 23:38:24,831 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:38:25,012 WARN L250 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2024-11-13 23:38:25,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:38:25,072 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:38:25,083 WARN L250 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_dc60faaf-42a8-4b64-aa81-2a00c48267f6/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2024-11-13 23:38:25,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:38:25,134 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:38:25,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25 WrapperNode [2024-11-13 23:38:25,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:38:25,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:38:25,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:38:25,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:38:25,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,185 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-13 23:38:25,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:38:25,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:38:25,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:38:25,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:38:25,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:38:25,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:38:25,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:38:25,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:38:25,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (1/1) ... [2024-11-13 23:38:25,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:38:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:38:25,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:38:25,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-13 23:38:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:38:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:38:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:38:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-13 23:38:25,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:38:25,391 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:38:29,903 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-13 23:38:29,904 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:38:29,918 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:38:29,918 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 23:38:29,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:29 BoogieIcfgContainer [2024-11-13 23:38:29,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:38:29,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:38:29,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:38:29,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:38:29,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:38:24" (1/3) ... [2024-11-13 23:38:29,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138eb312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:38:29, skipping insertion in model container [2024-11-13 23:38:29,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:38:25" (2/3) ... [2024-11-13 23:38:29,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138eb312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:38:29, skipping insertion in model container [2024-11-13 23:38:29,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:29" (3/3) ... [2024-11-13 23:38:29,930 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2024-11-13 23:38:29,945 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:38:29,947 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sqrt_poly2.c that has 1 procedures, 14 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:38:30,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:38:30,030 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@7ed7ad49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:38:30,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:38:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-13 23:38:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:38:30,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:38:30,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:38:30,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:38:30,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:38:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2024-11-13 23:38:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:38:30,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348947101] [2024-11-13 23:38:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:30,065 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 [2024-11-13 23:38:30,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:38:30,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-13 23:38:30,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:38:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:38:31,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 23:38:31,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:38:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:38:31,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:38:31,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-13 23:38:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348947101] [2024-11-13 23:38:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348947101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:38:31,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:38:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:38:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301866248] [2024-11-13 23:38:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:38:31,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:38:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-13 23:38:31,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:38:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:38:31,349 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:38:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:38:31,360 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-13 23:38:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:38:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 23:38:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:38:31,367 INFO L225 Difference]: With dead ends: 25 [2024-11-13 23:38:31,367 INFO L226 Difference]: Without dead ends: 10 [2024-11-13 23:38:31,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:38:31,372 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:38:31,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:38:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-13 23:38:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-13 23:38:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2024-11-13 23:38:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-11-13 23:38:31,397 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2024-11-13 23:38:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:38:31,398 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-11-13 23:38:31,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:38:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-11-13 23:38:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:38:31,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:38:31,398 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:38:31,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-13 23:38:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:38:31,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:38:31,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:38:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2024-11-13 23:38:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-13 23:38:31,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119249028] [2024-11-13 23:38:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:31,602 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 [2024-11-13 23:38:31,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-13 23:38:31,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-13 23:38:31,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:39:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 23:39:06,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 23:39:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 23:39:09,914 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-13 23:39:09,914 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 23:39:09,916 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 23:39:09,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-13 23:39:10,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-13 23:39:10,123 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 23:39:10,150 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 23:39:10,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 11:39:10 BoogieIcfgContainer [2024-11-13 23:39:10,153 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 23:39:10,154 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 23:39:10,154 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 23:39:10,154 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 23:39:10,155 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:38:29" (3/4) ... [2024-11-13 23:39:10,155 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 23:39:10,207 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-13 23:39:10,207 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 23:39:10,207 INFO L158 Benchmark]: Toolchain (without parser) took 45404.46ms. Allocated memory is still 117.4MB. Free memory was 95.2MB in the beginning and 40.3MB in the end (delta: 54.9MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-13 23:39:10,208 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:39:10,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.49ms. Allocated memory is still 117.4MB. Free memory was 95.0MB in the beginning and 82.8MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:39:10,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.20ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:39:10,208 INFO L158 Benchmark]: Boogie Preprocessor took 47.52ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:39:10,209 INFO L158 Benchmark]: RCFGBuilder took 4684.48ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 68.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:39:10,209 INFO L158 Benchmark]: TraceAbstraction took 40231.40ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 42.8MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 23:39:10,209 INFO L158 Benchmark]: Witness Printer took 53.15ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 40.3MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:39:10,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.49ms. Allocated memory is still 117.4MB. Free memory was 95.0MB in the beginning and 82.8MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.20ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.52ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4684.48ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 68.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 40231.40ms. Allocated memory is still 117.4MB. Free memory was 67.7MB in the beginning and 42.8MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 53.15ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 40.3MB in the end (delta: 2.5MB). 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=962, r=-1178110404862490500000000000, x={7:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=963, r=-1178110404862490500000000000, x={7:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, \result=-5059946828647238000000000000000000000] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L14] reach_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 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, 35.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2024-11-13 23:39:10,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc60faaf-42a8-4b64-aa81-2a00c48267f6/bin/utaipan-verify-sOmjnqqW8E/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE