./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2 --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 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:24:15,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:24:15,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:24:15,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:24:15,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:24:15,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:24:15,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:24:15,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:24:15,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:24:15,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:24:15,635 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:24:15,636 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:24:15,640 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:24:15,640 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:24:15,641 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:24:15,641 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:24:15,641 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:24:15,642 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:24:15,642 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:24:15,642 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:24:15,643 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:24:15,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:24:15,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:24:15,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:24:15,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:24:15,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:24:15,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:24:15,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:24:15,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:24:15,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:24:15,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:24:15,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:24:15,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:24:15,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:24:15,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:24:15,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:24:15,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:24:15,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:24:15,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:15,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:24:15,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:24:15,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:24:15,660 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:24:15,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:24:15,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:24:15,661 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:24:15,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:24:15,662 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2024-11-02 12:24:15,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:24:15,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:24:15,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:24:15,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:24:15,975 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:24:15,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i Unable to find full path for "g++" [2024-11-02 12:24:18,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:18,311 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:18,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2024-11-02 12:24:18,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/7ca89d903/109a269bab6b4c83b8f313ef71cea436/FLAGb7cf2d1b3 [2024-11-02 12:24:18,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/7ca89d903/109a269bab6b4c83b8f313ef71cea436 [2024-11-02 12:24:18,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:18,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:18,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:18,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:18,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:18,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:18" (1/1) ... [2024-11-02 12:24:18,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712c3673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:18, skipping insertion in model container [2024-11-02 12:24:18,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:18" (1/1) ... [2024-11-02 12:24:18,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:19,044 WARN L251 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2024-11-02 12:24:19,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:19,059 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:19,077 WARN L251 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2024-11-02 12:24:19,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:19,095 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:19,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19 WrapperNode [2024-11-02 12:24:19,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:19,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:19,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:19,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:19,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,136 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-02 12:24:19,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:19,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:19,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:19,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:19,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:19,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:19,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:19,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:19,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (1/1) ... [2024-11-02 12:24:19,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:19,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:19,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-02 12:24:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-02 12:24:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-02 12:24:19,230 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-02 12:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:19,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:19,306 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:19,308 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:19,454 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:19,454 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:19,500 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:19,500 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:24:19,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:19 BoogieIcfgContainer [2024-11-02 12:24:19,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:19,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:19,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:19,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:19,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:18" (1/3) ... [2024-11-02 12:24:19,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:19, skipping insertion in model container [2024-11-02 12:24:19,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:19" (2/3) ... [2024-11-02 12:24:19,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9c55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:19, skipping insertion in model container [2024-11-02 12:24:19,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:19" (3/3) ... [2024-11-02 12:24:19,511 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2024-11-02 12:24:19,531 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:19,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:24:19,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:19,602 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;@5cc9144b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:19,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:24:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:24:19,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:19,615 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:19,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:19,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1034421533, now seen corresponding path program 1 times [2024-11-02 12:24:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206838478] [2024-11-02 12:24:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:24:19,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:24:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:24:19,799 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:24:19,801 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:24:19,802 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:24:19,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:19,810 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:24:19,830 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:24:19,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:24:19 BoogieIcfgContainer [2024-11-02 12:24:19,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:24:19,834 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:24:19,834 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:24:19,834 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:24:19,835 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:19" (3/4) ... [2024-11-02 12:24:19,837 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:24:19,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:24:19,839 INFO L158 Benchmark]: Toolchain (without parser) took 1130.91ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 103.7MB in the beginning and 139.5MB in the end (delta: -35.7MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,840 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 136.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.93ms. Allocated memory is still 136.3MB. Free memory was 103.3MB in the beginning and 90.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.94ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 89.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,842 INFO L158 Benchmark]: Boogie Preprocessor took 29.78ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 88.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,842 INFO L158 Benchmark]: RCFGBuilder took 330.96ms. Allocated memory is still 136.3MB. Free memory was 88.0MB in the beginning and 75.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:24:19,843 INFO L158 Benchmark]: TraceAbstraction took 328.92ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.6MB in the beginning and 140.5MB in the end (delta: -65.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:24:19,844 INFO L158 Benchmark]: Witness Printer took 4.88ms. Allocated memory is still 172.0MB. Free memory was 140.5MB in the beginning and 139.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:24:19,847 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 136.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.93ms. Allocated memory is still 136.3MB. Free memory was 103.3MB in the beginning and 90.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.94ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 89.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.78ms. Allocated memory is still 136.3MB. Free memory was 89.2MB in the beginning and 88.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.96ms. Allocated memory is still 136.3MB. Free memory was 88.0MB in the beginning and 75.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 328.92ms. Allocated memory was 136.3MB in the beginning and 172.0MB in the end (delta: 35.7MB). Free memory was 74.6MB in the beginning and 140.5MB in the end (delta: -65.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.88ms. Allocated memory is still 172.0MB. Free memory was 140.5MB in the beginning and 139.5MB in the end (delta: 1.0MB). 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: 51]: 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 someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L42] CALL, EXPR f(IN) VAL [\old(x)=55] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) VAL [IN=55] [L42] CALL, EXPR fp(IN) VAL [\old(x)=55] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) VAL [IN=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=53] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [IN=55, x=53] [L44] CALL, EXPR fp(x) VAL [\old(x)=53] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [IN=55, x=53] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) VAL [IN=55, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) VAL [IN=55, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=55] [L51] reach_error() VAL [IN=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, 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=19occurred 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, 24 NumberOfCodeBlocks, 24 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 [2024-11-02 12:24:19,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2 --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 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:24:22,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:24:22,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-02 12:24:22,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:24:22,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:24:22,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:24:22,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:24:22,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:24:22,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:24:22,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:24:22,572 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:24:22,573 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:24:22,573 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:24:22,576 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:24:22,576 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:24:22,577 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:24:22,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:24:22,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:24:22,580 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:24:22,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:24:22,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:24:22,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:24:22,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:24:22,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:24:22,585 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:24:22,585 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:24:22,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:24:22,586 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:24:22,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:24:22,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:24:22,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:24:22,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:24:22,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:24:22,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:24:22,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:24:22,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:22,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:24:22,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:24:22,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:24:22,589 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:24:22,589 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:24:22,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:24:22,601 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:24:22,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:24:22,602 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2024-11-02 12:24:23,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:24:23,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:24:23,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:24:23,049 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:24:23,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:24:23,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i Unable to find full path for "g++" [2024-11-02 12:24:25,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:25,735 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:25,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2024-11-02 12:24:25,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/82bb913e2/6139e5934c97428ab1bb4fbe81ad48ce/FLAG35ae90f69 [2024-11-02 12:24:25,767 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/data/82bb913e2/6139e5934c97428ab1bb4fbe81ad48ce [2024-11-02 12:24:25,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:25,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:25,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:25,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:25,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:25,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:25" (1/1) ... [2024-11-02 12:24:25,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e1bec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:25, skipping insertion in model container [2024-11-02 12:24:25,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:25" (1/1) ... [2024-11-02 12:24:25,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:26,064 WARN L251 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2024-11-02 12:24:26,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:26,093 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:26,119 WARN L251 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_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2024-11-02 12:24:26,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:26,144 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:26,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26 WrapperNode [2024-11-02 12:24:26,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:26,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:26,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:26,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:26,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,185 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-11-02 12:24:26,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:26,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:26,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:26,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:26,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:26,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:26,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:26,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:26,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (1/1) ... [2024-11-02 12:24:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:26,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:26,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-02 12:24:26,310 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-02 12:24:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:24:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-02 12:24:26,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-02 12:24:26,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:26,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:26,423 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:26,426 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:36,912 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:36,912 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:36,927 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:36,931 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:24:36,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:36 BoogieIcfgContainer [2024-11-02 12:24:36,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:36,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:36,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:36,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:36,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:25" (1/3) ... [2024-11-02 12:24:36,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be30dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:36, skipping insertion in model container [2024-11-02 12:24:36,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:26" (2/3) ... [2024-11-02 12:24:36,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be30dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:36, skipping insertion in model container [2024-11-02 12:24:36,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:36" (3/3) ... [2024-11-02 12:24:36,945 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2024-11-02 12:24:36,964 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:36,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:24:37,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:37,053 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;@28635671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:37,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:24:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:24:37,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:37,070 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:37,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:37,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2024-11-02 12:24:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:24:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352464195] [2024-11-02 12:24:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:37,098 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 [2024-11-02 12:24:37,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:24:37,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:24:37,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:24:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:40,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 12:24:40,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:24:40,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:40,642 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:24:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352464195] [2024-11-02 12:24:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352464195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:24:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703538811] [2024-11-02 12:24:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:24:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:24:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:24:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:24:40,689 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:24:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:40,709 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-02 12:24:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:24:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2024-11-02 12:24:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:40,718 INFO L225 Difference]: With dead ends: 49 [2024-11-02 12:24:40,719 INFO L226 Difference]: Without dead ends: 22 [2024-11-02 12:24:40,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:24:40,726 INFO L432 NwaCegarLoop]: 29 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, 29 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 [2024-11-02 12:24:40,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:24:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-02 12:24:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-02 12:24:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:24:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-02 12:24:40,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2024-11-02 12:24:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:40,769 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-02 12:24:40,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 12:24:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-02 12:24:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:24:40,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:40,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:40,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:24:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:24:40,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2024-11-02 12:24:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:24:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848034939] [2024-11-02 12:24:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,977 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 [2024-11-02 12:24:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:24:40,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:24:40,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac4604e-7a21-4d9d-b6a1-ccf7593b5463/bin/utaipan-verify-DbMuA5NWw2/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