./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.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_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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_5ae3482e-c314-404d-a586-33ed35dfd368/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 bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:25:49,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:25:49,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:25:49,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:25:49,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:25:49,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:25:49,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:25:49,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:25:49,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:25:49,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:25:49,287 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:25:49,287 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:25:49,287 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:25:49,287 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:25:49,287 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:25:49,288 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:25:49,288 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:25:49,289 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:25:49,289 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:25:49,289 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:25:49,290 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:25:49,290 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:25:49,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:25:49,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:25:49,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:25:49,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:25:49,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:25:49,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:25:49,294 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:25:49,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:25:49,294 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_5ae3482e-c314-404d-a586-33ed35dfd368/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 -> bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 [2024-11-14 05:25:49,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:25:49,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:25:49,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:25:49,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:25:49,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:25:49,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:25:51,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:25:51,771 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:25:51,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2024-11-14 05:25:51,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/8d2bd1aa1/9bf8c34e288c4287bace61b5631bdfb1/FLAG76fb22d55 [2024-11-14 05:25:51,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/8d2bd1aa1/9bf8c34e288c4287bace61b5631bdfb1 [2024-11-14 05:25:51,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:25:51,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:25:51,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:51,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:25:51,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:25:51,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:51" (1/1) ... [2024-11-14 05:25:51,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de12597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:51, skipping insertion in model container [2024-11-14 05:25:51,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:51" (1/1) ... [2024-11-14 05:25:51,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:25:52,042 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2024-11-14 05:25:52,048 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2024-11-14 05:25:52,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:52,137 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:25:52,151 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2024-11-14 05:25:52,155 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2024-11-14 05:25:52,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:52,197 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:25:52,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52 WrapperNode [2024-11-14 05:25:52,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:52,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:52,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:25:52,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:25:52,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,253 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2024-11-14 05:25:52,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:52,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:25:52,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:25:52,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:25:52,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:25:52,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:25:52,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:25:52,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:25:52,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (1/1) ... [2024-11-14 05:25:52,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:25:52,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:52,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:25:52,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:25:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:25:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:25:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:25:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:25:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:25:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:25:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:25:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:25:52,482 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:25:52,484 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:25:53,047 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-11-14 05:25:53,048 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:25:53,366 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:25:53,366 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:25:53,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:53 BoogieIcfgContainer [2024-11-14 05:25:53,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:25:53,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:25:53,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:25:53,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:25:53,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:25:51" (1/3) ... [2024-11-14 05:25:53,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9bb444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:25:53, skipping insertion in model container [2024-11-14 05:25:53,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:52" (2/3) ... [2024-11-14 05:25:53,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9bb444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:25:53, skipping insertion in model container [2024-11-14 05:25:53,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:53" (3/3) ... [2024-11-14 05:25:53,375 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-2a.c.cil.c [2024-11-14 05:25:53,390 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:25:53,391 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-2a.c.cil.c that has 3 procedures, 51 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:25:53,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:25:53,449 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;@7502c611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:25:53,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:25:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:25:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:25:53,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:53,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:25:53,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:53,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 12600982, now seen corresponding path program 1 times [2024-11-14 05:25:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:53,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150848600] [2024-11-14 05:25:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:25:53,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:25:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:25:53,568 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:25:53,570 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:25:53,571 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 05:25:53,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 05:25:53,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:25:53,577 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:25:53,588 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:25:53,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:25:53 BoogieIcfgContainer [2024-11-14 05:25:53,592 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:25:53,592 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:25:53,592 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:25:53,592 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:25:53,593 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:53" (3/4) ... [2024-11-14 05:25:53,595 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 05:25:53,596 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:25:53,597 INFO L158 Benchmark]: Toolchain (without parser) took 1782.95ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 61.9MB in the end (delta: 32.1MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2024-11-14 05:25:53,598 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:25:53,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.34ms. Allocated memory is still 117.4MB. Free memory was 93.6MB in the beginning and 78.9MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:25:53,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.50ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 76.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:25:53,599 INFO L158 Benchmark]: Boogie Preprocessor took 26.46ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 75.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:25:53,599 INFO L158 Benchmark]: RCFGBuilder took 1085.69ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 74.6MB in the end (delta: 784.2kB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2024-11-14 05:25:53,600 INFO L158 Benchmark]: TraceAbstraction took 223.24ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 61.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:25:53,600 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 117.4MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:25:53,604 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.34ms. Allocated memory is still 117.4MB. Free memory was 93.6MB in the beginning and 78.9MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.50ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 76.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.46ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 75.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1085.69ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 74.6MB in the end (delta: 784.2kB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * TraceAbstraction took 223.24ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 61.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 117.4MB. Free memory is still 61.9MB. 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: 48]: 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 someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) [L48] reach_error() - UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 NumberOfCodeBlocks, 4 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 [2024-11-14 05:25:53,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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_5ae3482e-c314-404d-a586-33ed35dfd368/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 bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:25:56,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:25:56,377 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:25:56,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:25:56,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:25:56,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:25:56,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:25:56,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:25:56,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:25:56,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:25:56,435 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:25:56,435 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:25:56,436 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:25:56,436 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:25:56,436 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:25:56,436 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:25:56,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:25:56,437 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:25:56,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:25:56,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:25:56,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:25:56,439 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:25:56,439 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:25:56,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:25:56,439 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:25:56,439 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_5ae3482e-c314-404d-a586-33ed35dfd368/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 -> bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 [2024-11-14 05:25:56,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:25:56,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:25:56,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:25:56,767 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:25:56,767 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:25:56,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-11-14 05:25:58,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:25:58,934 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:25:58,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2024-11-14 05:25:58,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/7cdf87cc6/87f93b447fe54e61a68d7d21cc624353/FLAG9b8409366 [2024-11-14 05:25:59,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/data/7cdf87cc6/87f93b447fe54e61a68d7d21cc624353 [2024-11-14 05:25:59,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:25:59,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:25:59,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:59,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:25:59,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:25:59,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a3cea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59, skipping insertion in model container [2024-11-14 05:25:59,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:25:59,417 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2024-11-14 05:25:59,425 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2024-11-14 05:25:59,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:59,532 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:25:59,551 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2024-11-14 05:25:59,553 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_5ae3482e-c314-404d-a586-33ed35dfd368/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2024-11-14 05:25:59,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:59,623 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:25:59,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59 WrapperNode [2024-11-14 05:25:59,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:59,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:59,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:25:59,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:25:59,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,665 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-14 05:25:59,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:59,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:25:59,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:25:59,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:25:59,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:25:59,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:25:59,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:25:59,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:25:59,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (1/1) ... [2024-11-14 05:25:59,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:25:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:59,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:25:59,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:25:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:25:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:25:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-14 05:25:59,781 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-14 05:25:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:25:59,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:25:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:25:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:25:59,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:25:59,862 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:26:02,495 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-14 05:26:02,495 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:26:02,510 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:26:02,510 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:26:02,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:26:02 BoogieIcfgContainer [2024-11-14 05:26:02,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:26:02,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:26:02,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:26:02,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:26:02,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:25:59" (1/3) ... [2024-11-14 05:26:02,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630ba808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:26:02, skipping insertion in model container [2024-11-14 05:26:02,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:59" (2/3) ... [2024-11-14 05:26:02,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630ba808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:26:02, skipping insertion in model container [2024-11-14 05:26:02,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:26:02" (3/3) ... [2024-11-14 05:26:02,529 INFO L112 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-2a.c.cil.c [2024-11-14 05:26:02,542 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:26:02,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-2a.c.cil.c that has 3 procedures, 81 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:26:02,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:26:02,599 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;@64659542, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:26:02,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:26:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:26:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:26:02,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:02,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:02,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:02,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-14 05:26:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059436132] [2024-11-14 05:26:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:02,625 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 [2024-11-14 05:26:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:02,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:26:02,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:26:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:03,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 05:26:03,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:03,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:26:03,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:26:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059436132] [2024-11-14 05:26:03,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059436132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:03,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:03,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:26:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824765499] [2024-11-14 05:26:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:03,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:26:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:26:03,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:26:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:26:03,140 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-14 05:26:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:03,165 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2024-11-14 05:26:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:26:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-11-14 05:26:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:03,174 INFO L225 Difference]: With dead ends: 157 [2024-11-14 05:26:03,174 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 05:26:03,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:26:03,180 INFO L432 NwaCegarLoop]: 116 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, 116 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 [2024-11-14 05:26:03,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:26:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 05:26:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-14 05:26:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:26:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2024-11-14 05:26:03,218 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2024-11-14 05:26:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:03,219 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2024-11-14 05:26:03,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-14 05:26:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2024-11-14 05:26:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:26:03,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:03,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:03,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:26:03,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:26:03,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:26:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-14 05:26:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:26:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682561548] [2024-11-14 05:26:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:03,426 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 [2024-11-14 05:26:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:26:03,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:26:03,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:32:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:32:14,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:32:14,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:32:29,216 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-14 05:33:02,686 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-14 05:33:04,758 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-14 05:33:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:33:04,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:04,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682561548] [2024-11-14 05:33:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682561548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:04,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:33:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063498219] [2024-11-14 05:33:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:04,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:33:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:33:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-14 05:33:04,773 INFO L87 Difference]: Start difference. First operand 74 states and 107 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-11-14 05:33:07,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:33:09,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:33:11,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 05:33:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:11,694 INFO L93 Difference]: Finished difference Result 74 states and 107 transitions. [2024-11-14 05:33:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:33:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2024-11-14 05:33:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:11,696 INFO L225 Difference]: With dead ends: 74 [2024-11-14 05:33:11,697 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 05:33:11,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-14 05:33:11,698 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 101 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:11,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 274 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 3 Unknown, 214 Unchecked, 6.9s Time] [2024-11-14 05:33:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 05:33:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 05:33:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.5) internal successors, (87), 60 states have internal predecessors, (87), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:33:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 102 transitions. [2024-11-14 05:33:11,710 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 102 transitions. Word has length 7 [2024-11-14 05:33:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:11,711 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 102 transitions. [2024-11-14 05:33:11,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-11-14 05:33:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 102 transitions. [2024-11-14 05:33:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:33:11,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:11,712 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] [2024-11-14 05:33:11,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:11,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:11,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:11,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash -549432071, now seen corresponding path program 1 times [2024-11-14 05:33:11,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:11,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067713897] [2024-11-14 05:33:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:11,914 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 [2024-11-14 05:33:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:11,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:11,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (4)] Waiting until timeout for monitored process [2024-11-14 05:33:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:11,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:33:12,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:12,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:13,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067713897] [2024-11-14 05:33:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067713897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1325140264] [2024-11-14 05:33:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:33:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:33:13,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:33:13,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-14 05:33:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:13,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:33:13,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:14,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1325140264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103362431] [2024-11-14 05:33:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:14,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:14,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:14,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:33:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:14,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:33:14,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:14,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103362431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:15,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:33:15,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2024-11-14 05:33:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188814805] [2024-11-14 05:33:15,370 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:15,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:33:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:33:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:33:15,373 INFO L87 Difference]: Start difference. First operand 69 states and 102 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:33:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:18,336 INFO L93 Difference]: Finished difference Result 162 states and 253 transitions. [2024-11-14 05:33:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:33:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2024-11-14 05:33:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:18,340 INFO L225 Difference]: With dead ends: 162 [2024-11-14 05:33:18,340 INFO L226 Difference]: Without dead ends: 117 [2024-11-14 05:33:18,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:33:18,342 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 39 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:18,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 779 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:33:18,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-14 05:33:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-14 05:33:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 96 states have internal predecessors, (135), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-14 05:33:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 169 transitions. [2024-11-14 05:33:18,365 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 169 transitions. Word has length 33 [2024-11-14 05:33:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:18,365 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 169 transitions. [2024-11-14 05:33:18,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:33:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 169 transitions. [2024-11-14 05:33:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:33:18,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:18,368 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:18,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-14 05:33:18,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:33:18,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (4)] Ended with exit code 0 [2024-11-14 05:33:18,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:18,970 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:18,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1466896535, now seen corresponding path program 1 times [2024-11-14 05:33:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716796332] [2024-11-14 05:33:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:18,971 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 [2024-11-14 05:33:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:18,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:18,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (7)] Waiting until timeout for monitored process [2024-11-14 05:33:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:19,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:33:19,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:19,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:19,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:19,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716796332] [2024-11-14 05:33:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716796332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:33:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764220808] [2024-11-14 05:33:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:19,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:33:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:33:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:33:19,694 INFO L87 Difference]: Start difference. First operand 113 states and 169 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:20,660 INFO L93 Difference]: Finished difference Result 247 states and 371 transitions. [2024-11-14 05:33:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:33:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-14 05:33:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:20,671 INFO L225 Difference]: With dead ends: 247 [2024-11-14 05:33:20,671 INFO L226 Difference]: Without dead ends: 186 [2024-11-14 05:33:20,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:33:20,675 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 46 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:20,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 440 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:33:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-14 05:33:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2024-11-14 05:33:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 160 states have (on average 1.4125) internal successors, (226), 159 states have internal predecessors, (226), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-14 05:33:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2024-11-14 05:33:20,724 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 41 [2024-11-14 05:33:20,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:20,731 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2024-11-14 05:33:20,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2024-11-14 05:33:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:33:20,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:20,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:20,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (7)] Forceful destruction successful, exit code 0 [2024-11-14 05:33:20,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:20,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:20,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:20,937 INFO L85 PathProgramCache]: Analyzing trace with hash -786838165, now seen corresponding path program 1 times [2024-11-14 05:33:20,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:20,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346038257] [2024-11-14 05:33:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:20,937 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 [2024-11-14 05:33:20,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:20,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:20,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (8)] Waiting until timeout for monitored process [2024-11-14 05:33:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:21,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:33:21,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:33:23,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:24,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346038257] [2024-11-14 05:33:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346038257] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:33:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2024-11-14 05:33:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695208304] [2024-11-14 05:33:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:24,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:33:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:33:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:33:24,609 INFO L87 Difference]: Start difference. First operand 184 states and 272 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:26,613 INFO L93 Difference]: Finished difference Result 239 states and 352 transitions. [2024-11-14 05:33:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:33:26,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-14 05:33:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:26,618 INFO L225 Difference]: With dead ends: 239 [2024-11-14 05:33:26,618 INFO L226 Difference]: Without dead ends: 184 [2024-11-14 05:33:26,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:33:26,621 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 37 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:26,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 447 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:33:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-14 05:33:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-14 05:33:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 160 states have (on average 1.4) internal successors, (224), 159 states have internal predecessors, (224), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-14 05:33:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 270 transitions. [2024-11-14 05:33:26,659 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 270 transitions. Word has length 41 [2024-11-14 05:33:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:26,659 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 270 transitions. [2024-11-14 05:33:26,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 270 transitions. [2024-11-14 05:33:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:33:26,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:26,662 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:26,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (8)] Ended with exit code 0 [2024-11-14 05:33:26,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:26,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:26,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash -729579863, now seen corresponding path program 1 times [2024-11-14 05:33:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693598795] [2024-11-14 05:33:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:26,863 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 [2024-11-14 05:33:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:26,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:26,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (9)] Waiting until timeout for monitored process [2024-11-14 05:33:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:26,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:33:26,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:27,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:27,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693598795] [2024-11-14 05:33:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693598795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:27,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:27,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:33:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147640084] [2024-11-14 05:33:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:27,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:33:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:33:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:33:27,724 INFO L87 Difference]: Start difference. First operand 184 states and 270 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:28,825 INFO L93 Difference]: Finished difference Result 215 states and 314 transitions. [2024-11-14 05:33:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:33:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-14 05:33:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:28,829 INFO L225 Difference]: With dead ends: 215 [2024-11-14 05:33:28,829 INFO L226 Difference]: Without dead ends: 177 [2024-11-14 05:33:28,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:33:28,831 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 32 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:28,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 517 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:33:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-14 05:33:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2024-11-14 05:33:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 153 states have (on average 1.392156862745098) internal successors, (213), 152 states have internal predecessors, (213), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-14 05:33:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2024-11-14 05:33:28,848 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 41 [2024-11-14 05:33:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:28,848 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2024-11-14 05:33:28,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2024-11-14 05:33:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 05:33:28,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:28,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:28,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (9)] Ended with exit code 0 [2024-11-14 05:33:29,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:29,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:29,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash 728518674, now seen corresponding path program 1 times [2024-11-14 05:33:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755036737] [2024-11-14 05:33:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:29,053 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 [2024-11-14 05:33:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:29,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:29,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (10)] Waiting until timeout for monitored process [2024-11-14 05:33:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:29,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:33:29,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:33:29,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:29,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755036737] [2024-11-14 05:33:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755036737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:29,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:33:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805520470] [2024-11-14 05:33:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:29,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:29,534 INFO L87 Difference]: Start difference. First operand 175 states and 255 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:29,765 INFO L93 Difference]: Finished difference Result 290 states and 426 transitions. [2024-11-14 05:33:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:33:29,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-14 05:33:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:29,770 INFO L225 Difference]: With dead ends: 290 [2024-11-14 05:33:29,771 INFO L226 Difference]: Without dead ends: 224 [2024-11-14 05:33:29,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:29,772 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 15 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:29,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 325 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:33:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-14 05:33:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-11-14 05:33:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 200 states have (on average 1.35) internal successors, (270), 199 states have internal predecessors, (270), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-14 05:33:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 316 transitions. [2024-11-14 05:33:29,813 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 316 transitions. Word has length 44 [2024-11-14 05:33:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:29,817 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 316 transitions. [2024-11-14 05:33:29,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 316 transitions. [2024-11-14 05:33:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 05:33:29,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:29,825 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:29,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (10)] Ended with exit code 0 [2024-11-14 05:33:30,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:30,026 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:30,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1141622334, now seen corresponding path program 1 times [2024-11-14 05:33:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874132423] [2024-11-14 05:33:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:30,027 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 [2024-11-14 05:33:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:30,030 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:30,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (11)] Waiting until timeout for monitored process [2024-11-14 05:33:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:30,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:33:30,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:33:30,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:30,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874132423] [2024-11-14 05:33:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874132423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:30,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:30,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:33:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822143243] [2024-11-14 05:33:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:30,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:30,424 INFO L87 Difference]: Start difference. First operand 224 states and 316 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:33:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:31,028 INFO L93 Difference]: Finished difference Result 368 states and 519 transitions. [2024-11-14 05:33:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:33:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-14 05:33:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:31,030 INFO L225 Difference]: With dead ends: 368 [2024-11-14 05:33:31,031 INFO L226 Difference]: Without dead ends: 148 [2024-11-14 05:33:31,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:33:31,032 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 26 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:31,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 261 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:33:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-14 05:33:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 136. [2024-11-14 05:33:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 120 states have (on average 1.325) internal successors, (159), 122 states have internal predecessors, (159), 11 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-14 05:33:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 186 transitions. [2024-11-14 05:33:31,047 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 186 transitions. Word has length 44 [2024-11-14 05:33:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:31,048 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 186 transitions. [2024-11-14 05:33:31,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:33:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 186 transitions. [2024-11-14 05:33:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:33:31,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:31,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:31,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (11)] Forceful destruction successful, exit code 0 [2024-11-14 05:33:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:31,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:31,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1015579738, now seen corresponding path program 1 times [2024-11-14 05:33:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002311805] [2024-11-14 05:33:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:31,251 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 [2024-11-14 05:33:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:31,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:31,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (12)] Waiting until timeout for monitored process [2024-11-14 05:33:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:31,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:33:31,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:33:32,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:33:34,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002311805] [2024-11-14 05:33:34,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002311805] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:34,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:33:34,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-14 05:33:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760789773] [2024-11-14 05:33:34,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:34,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:33:34,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:33:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:33:34,125 INFO L87 Difference]: Start difference. First operand 136 states and 186 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:35,841 INFO L93 Difference]: Finished difference Result 206 states and 290 transitions. [2024-11-14 05:33:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:33:35,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-14 05:33:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:35,844 INFO L225 Difference]: With dead ends: 206 [2024-11-14 05:33:35,844 INFO L226 Difference]: Without dead ends: 170 [2024-11-14 05:33:35,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:33:35,846 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 25 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:35,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 424 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:33:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-14 05:33:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2024-11-14 05:33:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 148 states have internal predecessors, (191), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-14 05:33:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 224 transitions. [2024-11-14 05:33:35,864 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 224 transitions. Word has length 45 [2024-11-14 05:33:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:35,865 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 224 transitions. [2024-11-14 05:33:35,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 224 transitions. [2024-11-14 05:33:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:33:35,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:35,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:35,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (12)] Ended with exit code 0 [2024-11-14 05:33:36,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:36,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:36,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:36,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1504380196, now seen corresponding path program 1 times [2024-11-14 05:33:36,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:36,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763516394] [2024-11-14 05:33:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:36,068 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 [2024-11-14 05:33:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:36,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:36,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (13)] Waiting until timeout for monitored process [2024-11-14 05:33:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:36,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:33:36,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:33:36,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:36,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763516394] [2024-11-14 05:33:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763516394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:36,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:33:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949419645] [2024-11-14 05:33:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:33:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:33:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:33:36,426 INFO L87 Difference]: Start difference. First operand 164 states and 224 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:36,686 INFO L93 Difference]: Finished difference Result 171 states and 230 transitions. [2024-11-14 05:33:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:33:36,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-14 05:33:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:36,689 INFO L225 Difference]: With dead ends: 171 [2024-11-14 05:33:36,689 INFO L226 Difference]: Without dead ends: 164 [2024-11-14 05:33:36,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:33:36,690 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 3 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:36,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 383 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:33:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-14 05:33:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-14 05:33:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 145 states have (on average 1.296551724137931) internal successors, (188), 148 states have internal predecessors, (188), 14 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-14 05:33:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 221 transitions. [2024-11-14 05:33:36,702 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 221 transitions. Word has length 45 [2024-11-14 05:33:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:36,702 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 221 transitions. [2024-11-14 05:33:36,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 221 transitions. [2024-11-14 05:33:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:33:36,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:36,704 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:36,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (13)] Ended with exit code 0 [2024-11-14 05:33:36,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:36,908 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:36,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2051114471, now seen corresponding path program 2 times [2024-11-14 05:33:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239849227] [2024-11-14 05:33:36,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:33:36,909 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 [2024-11-14 05:33:36,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:36,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:36,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (14)] Waiting until timeout for monitored process [2024-11-14 05:33:36,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-14 05:33:36,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:33:36,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:33:36,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:33:38,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:38,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239849227] [2024-11-14 05:33:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239849227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:33:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891547131] [2024-11-14 05:33:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:38,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:33:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:33:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:33:38,606 INFO L87 Difference]: Start difference. First operand 164 states and 221 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:42,267 INFO L93 Difference]: Finished difference Result 290 states and 399 transitions. [2024-11-14 05:33:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:33:42,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-14 05:33:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:42,270 INFO L225 Difference]: With dead ends: 290 [2024-11-14 05:33:42,270 INFO L226 Difference]: Without dead ends: 249 [2024-11-14 05:33:42,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:33:42,275 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 57 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:42,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1166 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 05:33:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-14 05:33:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2024-11-14 05:33:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 223 states have internal predecessors, (286), 21 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (29), 25 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-14 05:33:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 336 transitions. [2024-11-14 05:33:42,297 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 336 transitions. Word has length 45 [2024-11-14 05:33:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:42,298 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 336 transitions. [2024-11-14 05:33:42,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 336 transitions. [2024-11-14 05:33:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:33:42,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:42,302 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:42,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (14)] Ended with exit code 0 [2024-11-14 05:33:42,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:42,505 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:42,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1132557739, now seen corresponding path program 1 times [2024-11-14 05:33:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701005773] [2024-11-14 05:33:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:42,506 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 [2024-11-14 05:33:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:42,507 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:42,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (15)] Waiting until timeout for monitored process [2024-11-14 05:33:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:42,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:33:42,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:43,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:33:44,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701005773] [2024-11-14 05:33:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701005773] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:33:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:33:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-14 05:33:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791359003] [2024-11-14 05:33:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:44,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:33:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:33:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:33:44,275 INFO L87 Difference]: Start difference. First operand 247 states and 336 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:44,879 INFO L93 Difference]: Finished difference Result 253 states and 341 transitions. [2024-11-14 05:33:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:33:44,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-11-14 05:33:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:44,882 INFO L225 Difference]: With dead ends: 253 [2024-11-14 05:33:44,882 INFO L226 Difference]: Without dead ends: 251 [2024-11-14 05:33:44,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:33:44,884 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 3 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:44,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 455 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:33:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-14 05:33:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-14 05:33:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 222 states have (on average 1.3018018018018018) internal successors, (289), 226 states have internal predecessors, (289), 21 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (29), 25 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-14 05:33:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 339 transitions. [2024-11-14 05:33:44,903 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 339 transitions. Word has length 45 [2024-11-14 05:33:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:44,903 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 339 transitions. [2024-11-14 05:33:44,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 339 transitions. [2024-11-14 05:33:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 05:33:44,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:44,905 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:44,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (15)] Ended with exit code 0 [2024-11-14 05:33:45,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:45,106 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:45,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1891124004, now seen corresponding path program 1 times [2024-11-14 05:33:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221109396] [2024-11-14 05:33:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:45,107 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 [2024-11-14 05:33:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:45,111 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:45,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (16)] Waiting until timeout for monitored process [2024-11-14 05:33:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:45,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:33:45,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:33:45,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:45,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221109396] [2024-11-14 05:33:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221109396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:45,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:45,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:33:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701037263] [2024-11-14 05:33:45,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:45,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:45,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:45,522 INFO L87 Difference]: Start difference. First operand 251 states and 339 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:45,684 INFO L93 Difference]: Finished difference Result 433 states and 597 transitions. [2024-11-14 05:33:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:33:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-14 05:33:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:45,687 INFO L225 Difference]: With dead ends: 433 [2024-11-14 05:33:45,687 INFO L226 Difference]: Without dead ends: 353 [2024-11-14 05:33:45,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:45,690 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 28 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:45,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 318 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:33:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-14 05:33:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 297. [2024-11-14 05:33:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 264 states have (on average 1.3068181818181819) internal successors, (345), 267 states have internal predecessors, (345), 25 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (33), 29 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-14 05:33:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 403 transitions. [2024-11-14 05:33:45,721 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 403 transitions. Word has length 46 [2024-11-14 05:33:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:45,722 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 403 transitions. [2024-11-14 05:33:45,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 403 transitions. [2024-11-14 05:33:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 05:33:45,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:45,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:45,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (16)] Ended with exit code 0 [2024-11-14 05:33:45,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:45,926 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:45,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1508403527, now seen corresponding path program 1 times [2024-11-14 05:33:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:45,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689622298] [2024-11-14 05:33:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:45,928 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 [2024-11-14 05:33:45,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:45,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:45,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (17)] Waiting until timeout for monitored process [2024-11-14 05:33:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:46,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:33:46,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:33:46,166 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:46,166 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689622298] [2024-11-14 05:33:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689622298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:46,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:33:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714654436] [2024-11-14 05:33:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:46,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:46,168 INFO L87 Difference]: Start difference. First operand 297 states and 403 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:46,279 INFO L93 Difference]: Finished difference Result 316 states and 424 transitions. [2024-11-14 05:33:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:33:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2024-11-14 05:33:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:46,282 INFO L225 Difference]: With dead ends: 316 [2024-11-14 05:33:46,282 INFO L226 Difference]: Without dead ends: 272 [2024-11-14 05:33:46,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:46,283 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:46,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:33:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-14 05:33:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-14 05:33:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 239 states have (on average 1.3096234309623431) internal successors, (313), 243 states have internal predecessors, (313), 25 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (31), 28 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-14 05:33:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 369 transitions. [2024-11-14 05:33:46,302 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 369 transitions. Word has length 49 [2024-11-14 05:33:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:46,302 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 369 transitions. [2024-11-14 05:33:46,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 369 transitions. [2024-11-14 05:33:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:33:46,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:46,304 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:46,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (17)] Forceful destruction successful, exit code 0 [2024-11-14 05:33:46,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:46,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:46,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1580177556, now seen corresponding path program 1 times [2024-11-14 05:33:46,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:46,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145299109] [2024-11-14 05:33:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:46,505 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 [2024-11-14 05:33:46,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:46,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:46,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (18)] Waiting until timeout for monitored process [2024-11-14 05:33:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:46,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:33:46,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:33:48,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:48,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145299109] [2024-11-14 05:33:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145299109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:33:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710975860] [2024-11-14 05:33:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:48,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:33:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:33:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:33:48,070 INFO L87 Difference]: Start difference. First operand 272 states and 369 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:33:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:50,738 INFO L93 Difference]: Finished difference Result 537 states and 742 transitions. [2024-11-14 05:33:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:33:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2024-11-14 05:33:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:50,743 INFO L225 Difference]: With dead ends: 537 [2024-11-14 05:33:50,743 INFO L226 Difference]: Without dead ends: 431 [2024-11-14 05:33:50,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:33:50,746 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 94 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:50,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 929 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-14 05:33:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-14 05:33:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2024-11-14 05:33:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 296 states have (on average 1.3108108108108107) internal successors, (388), 298 states have internal predecessors, (388), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-14 05:33:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 465 transitions. [2024-11-14 05:33:50,785 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 465 transitions. Word has length 50 [2024-11-14 05:33:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:50,785 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 465 transitions. [2024-11-14 05:33:50,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:33:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 465 transitions. [2024-11-14 05:33:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:33:50,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:50,788 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:50,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (18)] Ended with exit code 0 [2024-11-14 05:33:50,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:50,989 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1459428528, now seen corresponding path program 1 times [2024-11-14 05:33:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058445180] [2024-11-14 05:33:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:50,990 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 [2024-11-14 05:33:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:50,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:50,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (19)] Waiting until timeout for monitored process [2024-11-14 05:33:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:51,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:33:51,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:52,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:53,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058445180] [2024-11-14 05:33:53,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058445180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875722022] [2024-11-14 05:33:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:53,512 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:33:53,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:33:53,514 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:33:53,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 05:33:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:53,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:33:53,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:53,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [875722022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062178930] [2024-11-14 05:33:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:54,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:33:54,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:33:54,436 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:33:54,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:33:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:54,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:33:54,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:54,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:33:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:33:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062178930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:33:55,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:33:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2024-11-14 05:33:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497725450] [2024-11-14 05:33:55,363 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:33:55,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:33:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:33:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:33:55,365 INFO L87 Difference]: Start difference. First operand 338 states and 465 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:33:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:58,223 INFO L93 Difference]: Finished difference Result 520 states and 713 transitions. [2024-11-14 05:33:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:33:58,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-11-14 05:33:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:58,227 INFO L225 Difference]: With dead ends: 520 [2024-11-14 05:33:58,227 INFO L226 Difference]: Without dead ends: 411 [2024-11-14 05:33:58,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:33:58,228 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 122 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:58,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1039 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:33:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-14 05:33:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 338. [2024-11-14 05:33:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 296 states have (on average 1.2905405405405406) internal successors, (382), 298 states have internal predecessors, (382), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-14 05:33:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2024-11-14 05:33:58,256 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 50 [2024-11-14 05:33:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:58,256 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2024-11-14 05:33:58,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:33:58,256 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2024-11-14 05:33:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:33:58,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:58,258 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:58,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (19)] Forceful destruction successful, exit code 0 [2024-11-14 05:33:58,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 05:33:58,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 05:33:58,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:33:58,859 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:58,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2134474190, now seen corresponding path program 1 times [2024-11-14 05:33:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:58,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576919968] [2024-11-14 05:33:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:58,860 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 [2024-11-14 05:33:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:58,862 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:58,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (22)] Waiting until timeout for monitored process [2024-11-14 05:33:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:33:58,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:33:58,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:33:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:33:59,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:33:59,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:33:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576919968] [2024-11-14 05:33:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576919968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:33:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:33:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:33:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791652074] [2024-11-14 05:33:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:33:59,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:33:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:33:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:33:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:33:59,170 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:59,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:33:59,752 INFO L93 Difference]: Finished difference Result 405 states and 544 transitions. [2024-11-14 05:33:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:33:59,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2024-11-14 05:33:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:33:59,756 INFO L225 Difference]: With dead ends: 405 [2024-11-14 05:33:59,756 INFO L226 Difference]: Without dead ends: 378 [2024-11-14 05:33:59,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:33:59,757 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:33:59,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 257 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:33:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-14 05:33:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 338. [2024-11-14 05:33:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 296 states have (on average 1.2837837837837838) internal successors, (380), 298 states have internal predecessors, (380), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (43), 39 states have call predecessors, (43), 33 states have call successors, (43) [2024-11-14 05:33:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 457 transitions. [2024-11-14 05:33:59,784 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 457 transitions. Word has length 50 [2024-11-14 05:33:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:33:59,784 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 457 transitions. [2024-11-14 05:33:59,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:33:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 457 transitions. [2024-11-14 05:33:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:33:59,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:33:59,787 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:33:59,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (22)] Ended with exit code 0 [2024-11-14 05:33:59,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:33:59,987 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:33:59,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:33:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1251141765, now seen corresponding path program 1 times [2024-11-14 05:33:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:33:59,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510182783] [2024-11-14 05:33:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:33:59,988 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 [2024-11-14 05:33:59,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:33:59,990 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:33:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (23)] Waiting until timeout for monitored process [2024-11-14 05:34:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:00,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:34:00,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:34:02,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:02,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:02,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510182783] [2024-11-14 05:34:02,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510182783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:02,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:34:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965336659] [2024-11-14 05:34:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:02,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:34:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:34:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:34:02,069 INFO L87 Difference]: Start difference. First operand 338 states and 457 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:05,705 INFO L93 Difference]: Finished difference Result 410 states and 555 transitions. [2024-11-14 05:34:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:34:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-14 05:34:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:05,708 INFO L225 Difference]: With dead ends: 410 [2024-11-14 05:34:05,709 INFO L226 Difference]: Without dead ends: 375 [2024-11-14 05:34:05,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:34:05,710 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 49 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:05,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 747 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 05:34:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-14 05:34:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 368. [2024-11-14 05:34:05,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 322 states have (on average 1.2670807453416149) internal successors, (408), 326 states have internal predecessors, (408), 38 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (46), 42 states have call predecessors, (46), 36 states have call successors, (46) [2024-11-14 05:34:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 492 transitions. [2024-11-14 05:34:05,740 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 492 transitions. Word has length 51 [2024-11-14 05:34:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:05,740 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 492 transitions. [2024-11-14 05:34:05,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 492 transitions. [2024-11-14 05:34:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:34:05,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:05,742 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:05,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (23)] Ended with exit code 0 [2024-11-14 05:34:05,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:05,943 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:05,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1393357641, now seen corresponding path program 1 times [2024-11-14 05:34:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142978777] [2024-11-14 05:34:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:05,944 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 [2024-11-14 05:34:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:05,946 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:05,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (24)] Waiting until timeout for monitored process [2024-11-14 05:34:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:06,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:34:06,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:34:06,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:06,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142978777] [2024-11-14 05:34:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142978777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:06,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:06,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:34:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923881172] [2024-11-14 05:34:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:06,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:34:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:34:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:34:06,650 INFO L87 Difference]: Start difference. First operand 368 states and 492 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:08,749 INFO L93 Difference]: Finished difference Result 483 states and 651 transitions. [2024-11-14 05:34:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:34:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-14 05:34:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:08,753 INFO L225 Difference]: With dead ends: 483 [2024-11-14 05:34:08,753 INFO L226 Difference]: Without dead ends: 459 [2024-11-14 05:34:08,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:34:08,754 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 27 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:08,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 485 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 05:34:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-14 05:34:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 381. [2024-11-14 05:34:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 331 states have (on average 1.2809667673716012) internal successors, (424), 337 states have internal predecessors, (424), 42 states have call successors, (42), 4 states have call predecessors, (42), 7 states have return successors, (50), 45 states have call predecessors, (50), 40 states have call successors, (50) [2024-11-14 05:34:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 516 transitions. [2024-11-14 05:34:08,799 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 516 transitions. Word has length 51 [2024-11-14 05:34:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:08,799 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 516 transitions. [2024-11-14 05:34:08,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 516 transitions. [2024-11-14 05:34:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:34:08,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:08,801 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:08,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (24)] Ended with exit code 0 [2024-11-14 05:34:09,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:09,002 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:09,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash -609523299, now seen corresponding path program 1 times [2024-11-14 05:34:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371389212] [2024-11-14 05:34:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:09,003 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 [2024-11-14 05:34:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:09,005 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:09,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (25)] Waiting until timeout for monitored process [2024-11-14 05:34:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:09,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:34:09,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:34:09,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:09,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371389212] [2024-11-14 05:34:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371389212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:34:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691551675] [2024-11-14 05:34:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:09,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:34:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:34:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:34:09,375 INFO L87 Difference]: Start difference. First operand 381 states and 516 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:09,584 INFO L93 Difference]: Finished difference Result 428 states and 575 transitions. [2024-11-14 05:34:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:34:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-14 05:34:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:09,587 INFO L225 Difference]: With dead ends: 428 [2024-11-14 05:34:09,588 INFO L226 Difference]: Without dead ends: 381 [2024-11-14 05:34:09,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:34:09,590 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 26 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:09,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 267 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:34:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-14 05:34:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-14 05:34:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 331 states have (on average 1.2175226586102719) internal successors, (403), 337 states have internal predecessors, (403), 42 states have call successors, (42), 4 states have call predecessors, (42), 7 states have return successors, (50), 45 states have call predecessors, (50), 40 states have call successors, (50) [2024-11-14 05:34:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 495 transitions. [2024-11-14 05:34:09,630 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 495 transitions. Word has length 51 [2024-11-14 05:34:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:09,631 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 495 transitions. [2024-11-14 05:34:09,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 495 transitions. [2024-11-14 05:34:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:34:09,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:09,633 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:09,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (25)] Ended with exit code 0 [2024-11-14 05:34:09,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:09,834 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:09,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash -317311561, now seen corresponding path program 1 times [2024-11-14 05:34:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572366997] [2024-11-14 05:34:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:09,835 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 [2024-11-14 05:34:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:09,840 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:09,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (26)] Waiting until timeout for monitored process [2024-11-14 05:34:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:09,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:34:09,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:34:10,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:10,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:10,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572366997] [2024-11-14 05:34:10,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572366997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:10,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:34:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205906626] [2024-11-14 05:34:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:10,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:34:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:34:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:34:10,137 INFO L87 Difference]: Start difference. First operand 381 states and 495 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:10,273 INFO L93 Difference]: Finished difference Result 390 states and 503 transitions. [2024-11-14 05:34:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:34:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2024-11-14 05:34:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:10,276 INFO L225 Difference]: With dead ends: 390 [2024-11-14 05:34:10,276 INFO L226 Difference]: Without dead ends: 343 [2024-11-14 05:34:10,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:34:10,277 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:10,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:34:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-14 05:34:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 318. [2024-11-14 05:34:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 276 states have (on average 1.2173913043478262) internal successors, (336), 281 states have internal predecessors, (336), 34 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (39), 36 states have call predecessors, (39), 32 states have call successors, (39) [2024-11-14 05:34:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 409 transitions. [2024-11-14 05:34:10,315 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 409 transitions. Word has length 53 [2024-11-14 05:34:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:10,316 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 409 transitions. [2024-11-14 05:34:10,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 409 transitions. [2024-11-14 05:34:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:34:10,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:10,319 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:10,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (26)] Forceful destruction successful, exit code 0 [2024-11-14 05:34:10,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:10,520 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:10,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 685169853, now seen corresponding path program 1 times [2024-11-14 05:34:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:10,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178260369] [2024-11-14 05:34:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:10,520 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 [2024-11-14 05:34:10,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:10,522 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:10,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (27)] Waiting until timeout for monitored process [2024-11-14 05:34:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:10,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:34:10,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:34:12,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:34:13,205 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178260369] [2024-11-14 05:34:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178260369] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:13,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:34:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-14 05:34:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520961842] [2024-11-14 05:34:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:13,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:34:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:34:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:34:13,207 INFO L87 Difference]: Start difference. First operand 318 states and 409 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:14,823 INFO L93 Difference]: Finished difference Result 394 states and 503 transitions. [2024-11-14 05:34:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:34:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2024-11-14 05:34:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:14,828 INFO L225 Difference]: With dead ends: 394 [2024-11-14 05:34:14,829 INFO L226 Difference]: Without dead ends: 333 [2024-11-14 05:34:14,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:34:14,831 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 22 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:14,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 333 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:34:14,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-14 05:34:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 310. [2024-11-14 05:34:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 268 states have (on average 1.212686567164179) internal successors, (325), 272 states have internal predecessors, (325), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-14 05:34:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 396 transitions. [2024-11-14 05:34:14,856 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 396 transitions. Word has length 53 [2024-11-14 05:34:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:14,857 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 396 transitions. [2024-11-14 05:34:14,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 05:34:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 396 transitions. [2024-11-14 05:34:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:34:14,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:14,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:14,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (27)] Forceful destruction successful, exit code 0 [2024-11-14 05:34:15,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:15,062 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:15,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1804015042, now seen corresponding path program 1 times [2024-11-14 05:34:15,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:15,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979120418] [2024-11-14 05:34:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:15,062 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 [2024-11-14 05:34:15,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:15,064 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:15,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (28)] Waiting until timeout for monitored process [2024-11-14 05:34:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:15,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:34:15,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:17,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:17,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:17,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979120418] [2024-11-14 05:34:17,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979120418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:17,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-14 05:34:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111653782] [2024-11-14 05:34:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:17,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:34:17,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:34:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:34:17,570 INFO L87 Difference]: Start difference. First operand 310 states and 396 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:22,194 INFO L93 Difference]: Finished difference Result 396 states and 504 transitions. [2024-11-14 05:34:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:34:22,194 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2024-11-14 05:34:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:22,196 INFO L225 Difference]: With dead ends: 396 [2024-11-14 05:34:22,196 INFO L226 Difference]: Without dead ends: 351 [2024-11-14 05:34:22,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:34:22,197 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 69 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:22,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1086 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-14 05:34:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-14 05:34:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 310. [2024-11-14 05:34:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 268 states have (on average 1.2014925373134329) internal successors, (322), 272 states have internal predecessors, (322), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-14 05:34:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 393 transitions. [2024-11-14 05:34:22,225 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 393 transitions. Word has length 55 [2024-11-14 05:34:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:22,225 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 393 transitions. [2024-11-14 05:34:22,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 393 transitions. [2024-11-14 05:34:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:34:22,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:22,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:22,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (28)] Ended with exit code 0 [2024-11-14 05:34:22,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:22,428 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:22,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1661799166, now seen corresponding path program 1 times [2024-11-14 05:34:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727794100] [2024-11-14 05:34:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:22,429 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 [2024-11-14 05:34:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:22,431 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:22,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (29)] Waiting until timeout for monitored process [2024-11-14 05:34:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:22,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:34:22,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:24,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:25,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727794100] [2024-11-14 05:34:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727794100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156080815] [2024-11-14 05:34:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:25,510 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:34:25,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:34:25,512 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:34:25,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-14 05:34:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:25,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:34:25,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:26,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1156080815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156725676] [2024-11-14 05:34:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:27,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:27,196 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:27,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-14 05:34:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:27,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:34:27,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:28,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156725676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:28,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:34:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-14 05:34:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505260014] [2024-11-14 05:34:28,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:34:28,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:34:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:34:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:34:28,607 INFO L87 Difference]: Start difference. First operand 310 states and 393 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:31,529 INFO L93 Difference]: Finished difference Result 391 states and 498 transitions. [2024-11-14 05:34:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:34:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2024-11-14 05:34:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:31,531 INFO L225 Difference]: With dead ends: 391 [2024-11-14 05:34:31,531 INFO L226 Difference]: Without dead ends: 351 [2024-11-14 05:34:31,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 175 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:34:31,533 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 45 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:31,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1006 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 05:34:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-14 05:34:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 310. [2024-11-14 05:34:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 268 states have (on average 1.1940298507462686) internal successors, (320), 272 states have internal predecessors, (320), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-14 05:34:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 391 transitions. [2024-11-14 05:34:31,561 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 391 transitions. Word has length 55 [2024-11-14 05:34:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:31,561 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 391 transitions. [2024-11-14 05:34:31,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 391 transitions. [2024-11-14 05:34:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:34:31,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:31,563 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:31,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-14 05:34:31,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (29)] Ended with exit code 0 [2024-11-14 05:34:31,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-14 05:34:32,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:32,165 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:32,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash 212141896, now seen corresponding path program 1 times [2024-11-14 05:34:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113272743] [2024-11-14 05:34:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:32,166 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 [2024-11-14 05:34:32,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:32,168 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:32,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (32)] Waiting until timeout for monitored process [2024-11-14 05:34:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:32,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:34:32,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:33,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:33,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113272743] [2024-11-14 05:34:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113272743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:34:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144887518] [2024-11-14 05:34:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:33,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:34:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:34:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:34:33,947 INFO L87 Difference]: Start difference. First operand 310 states and 391 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:34:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:37,122 INFO L93 Difference]: Finished difference Result 375 states and 471 transitions. [2024-11-14 05:34:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:34:37,124 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-14 05:34:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:37,126 INFO L225 Difference]: With dead ends: 375 [2024-11-14 05:34:37,126 INFO L226 Difference]: Without dead ends: 327 [2024-11-14 05:34:37,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:34:37,127 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 50 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:37,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 726 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 05:34:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-14 05:34:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 310. [2024-11-14 05:34:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 268 states have (on average 1.1865671641791045) internal successors, (318), 272 states have internal predecessors, (318), 35 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (36), 36 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-14 05:34:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 389 transitions. [2024-11-14 05:34:37,156 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 389 transitions. Word has length 55 [2024-11-14 05:34:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:37,157 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 389 transitions. [2024-11-14 05:34:37,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:34:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 389 transitions. [2024-11-14 05:34:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:34:37,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:37,158 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:37,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (32)] Ended with exit code 0 [2024-11-14 05:34:37,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:37,359 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:37,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 69926020, now seen corresponding path program 1 times [2024-11-14 05:34:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829154721] [2024-11-14 05:34:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:37,360 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 [2024-11-14 05:34:37,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:37,363 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:37,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (33)] Waiting until timeout for monitored process [2024-11-14 05:34:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:37,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:34:37,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:34:40,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:40,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829154721] [2024-11-14 05:34:40,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829154721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:40,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:34:40,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:34:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326186322] [2024-11-14 05:34:40,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:40,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:34:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:34:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2024-11-14 05:34:40,558 INFO L87 Difference]: Start difference. First operand 310 states and 389 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:34:43,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:34:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:44,015 INFO L93 Difference]: Finished difference Result 326 states and 406 transitions. [2024-11-14 05:34:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:34:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-14 05:34:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:44,017 INFO L225 Difference]: With dead ends: 326 [2024-11-14 05:34:44,017 INFO L226 Difference]: Without dead ends: 324 [2024-11-14 05:34:44,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2024-11-14 05:34:44,017 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 8 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:44,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 409 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2024-11-14 05:34:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-14 05:34:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 316. [2024-11-14 05:34:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 271 states have (on average 1.1845018450184501) internal successors, (321), 277 states have internal predecessors, (321), 37 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (38), 36 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-14 05:34:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 396 transitions. [2024-11-14 05:34:44,047 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 396 transitions. Word has length 55 [2024-11-14 05:34:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:44,047 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 396 transitions. [2024-11-14 05:34:44,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:34:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 396 transitions. [2024-11-14 05:34:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:34:44,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:44,049 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:44,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (33)] Forceful destruction successful, exit code 0 [2024-11-14 05:34:44,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:44,250 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:44,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash -225389381, now seen corresponding path program 1 times [2024-11-14 05:34:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:44,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922485909] [2024-11-14 05:34:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:44,251 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 [2024-11-14 05:34:44,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:44,253 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:44,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (34)] Waiting until timeout for monitored process [2024-11-14 05:34:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:44,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:34:44,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:45,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:46,740 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:46,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922485909] [2024-11-14 05:34:46,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922485909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:46,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1457907678] [2024-11-14 05:34:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:46,741 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:34:46,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:34:46,743 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:34:46,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-14 05:34:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:46,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:34:46,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:47,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1457907678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:47,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276415272] [2024-11-14 05:34:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:47,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:47,978 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:47,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 05:34:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:48,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:34:48,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:34:50,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:34:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276415272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:34:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 05:34:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 8, 8, 8] total 19 [2024-11-14 05:34:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309312581] [2024-11-14 05:34:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:34:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:34:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:34:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:34:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:34:50,428 INFO L87 Difference]: Start difference. First operand 316 states and 396 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:56,086 INFO L93 Difference]: Finished difference Result 372 states and 464 transitions. [2024-11-14 05:34:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:34:56,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2024-11-14 05:34:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:56,089 INFO L225 Difference]: With dead ends: 372 [2024-11-14 05:34:56,089 INFO L226 Difference]: Without dead ends: 325 [2024-11-14 05:34:56,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-14 05:34:56,091 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 57 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:56,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1087 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-14 05:34:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-14 05:34:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 291. [2024-11-14 05:34:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 249 states have (on average 1.1847389558232932) internal successors, (295), 254 states have internal predecessors, (295), 34 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (35), 33 states have call predecessors, (35), 32 states have call successors, (35) [2024-11-14 05:34:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 364 transitions. [2024-11-14 05:34:56,122 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 364 transitions. Word has length 56 [2024-11-14 05:34:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:56,123 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 364 transitions. [2024-11-14 05:34:56,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:34:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 364 transitions. [2024-11-14 05:34:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:34:56,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:56,125 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:34:56,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-14 05:34:56,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-14 05:34:56,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (34)] Ended with exit code 0 [2024-11-14 05:34:56,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:34:56,726 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:34:56,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash -339114241, now seen corresponding path program 1 times [2024-11-14 05:34:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:34:56,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387997851] [2024-11-14 05:34:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:56,727 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 [2024-11-14 05:34:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:34:56,729 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:34:56,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (37)] Waiting until timeout for monitored process [2024-11-14 05:34:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:56,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:34:56,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:57,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:34:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:34:59,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:34:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387997851] [2024-11-14 05:34:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387997851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:34:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141627905] [2024-11-14 05:34:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:59,618 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:34:59,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:34:59,620 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:34:59,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-14 05:34:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:59,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:34:59,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:35:00,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:35:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:35:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141627905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:35:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839135513] [2024-11-14 05:35:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:35:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:35:00,989 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:35:00,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 05:35:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:01,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:35:01,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:35:01,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:35:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:35:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839135513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:35:02,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:35:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2024-11-14 05:35:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530933305] [2024-11-14 05:35:02,341 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:35:02,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:35:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:35:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:35:02,346 INFO L87 Difference]: Start difference. First operand 291 states and 364 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:35:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:04,248 INFO L93 Difference]: Finished difference Result 342 states and 426 transitions. [2024-11-14 05:35:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:35:04,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 56 [2024-11-14 05:35:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:04,250 INFO L225 Difference]: With dead ends: 342 [2024-11-14 05:35:04,250 INFO L226 Difference]: Without dead ends: 291 [2024-11-14 05:35:04,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:35:04,251 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 60 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:04,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 983 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:35:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-14 05:35:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 267. [2024-11-14 05:35:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 228 states have (on average 1.1842105263157894) internal successors, (270), 232 states have internal predecessors, (270), 31 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (32), 30 states have call predecessors, (32), 29 states have call successors, (32) [2024-11-14 05:35:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 333 transitions. [2024-11-14 05:35:04,279 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 333 transitions. Word has length 56 [2024-11-14 05:35:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:04,280 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 333 transitions. [2024-11-14 05:35:04,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:35:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 333 transitions. [2024-11-14 05:35:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:35:04,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:04,281 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:04,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-14 05:35:04,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (37)] Ended with exit code 0 [2024-11-14 05:35:04,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-14 05:35:04,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:35:04,883 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:04,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1966150645, now seen corresponding path program 1 times [2024-11-14 05:35:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:04,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576960702] [2024-11-14 05:35:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:04,884 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 [2024-11-14 05:35:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:04,886 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:04,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (40)] Waiting until timeout for monitored process [2024-11-14 05:35:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:04,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:35:04,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:35:06,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:06,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576960702] [2024-11-14 05:35:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576960702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:06,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:06,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:35:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716604124] [2024-11-14 05:35:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:06,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:35:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:35:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:35:06,262 INFO L87 Difference]: Start difference. First operand 267 states and 333 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:35:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:08,499 INFO L93 Difference]: Finished difference Result 295 states and 362 transitions. [2024-11-14 05:35:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:35:08,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2024-11-14 05:35:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:08,501 INFO L225 Difference]: With dead ends: 295 [2024-11-14 05:35:08,501 INFO L226 Difference]: Without dead ends: 235 [2024-11-14 05:35:08,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:35:08,503 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 36 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:08,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 631 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:35:08,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-14 05:35:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 219. [2024-11-14 05:35:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 188 states have (on average 1.1702127659574468) internal successors, (220), 192 states have internal predecessors, (220), 23 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2024-11-14 05:35:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 267 transitions. [2024-11-14 05:35:08,538 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 267 transitions. Word has length 56 [2024-11-14 05:35:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:08,538 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 267 transitions. [2024-11-14 05:35:08,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:35:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 267 transitions. [2024-11-14 05:35:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:35:08,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:08,540 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:08,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (40)] Forceful destruction successful, exit code 0 [2024-11-14 05:35:08,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:08,742 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:08,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1852425785, now seen corresponding path program 1 times [2024-11-14 05:35:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387786783] [2024-11-14 05:35:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:08,744 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 [2024-11-14 05:35:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:08,747 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:08,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (41)] Waiting until timeout for monitored process [2024-11-14 05:35:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:08,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:35:08,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:35:15,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:15,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387786783] [2024-11-14 05:35:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387786783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:35:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761743404] [2024-11-14 05:35:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:15,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:35:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:35:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=38, Unknown=2, NotChecked=0, Total=56 [2024-11-14 05:35:15,558 INFO L87 Difference]: Start difference. First operand 219 states and 267 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:35:17,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:21,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:23,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:25,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:26,099 INFO L93 Difference]: Finished difference Result 233 states and 280 transitions. [2024-11-14 05:35:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:35:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2024-11-14 05:35:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:26,101 INFO L225 Difference]: With dead ends: 233 [2024-11-14 05:35:26,101 INFO L226 Difference]: Without dead ends: 231 [2024-11-14 05:35:26,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=38, Invalid=92, Unknown=2, NotChecked=0, Total=132 [2024-11-14 05:35:26,103 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 13 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:26,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 485 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2024-11-14 05:35:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-14 05:35:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 217. [2024-11-14 05:35:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 188 states have (on average 1.1702127659574468) internal successors, (220), 190 states have internal predecessors, (220), 21 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-14 05:35:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 263 transitions. [2024-11-14 05:35:26,126 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 263 transitions. Word has length 56 [2024-11-14 05:35:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:26,127 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 263 transitions. [2024-11-14 05:35:26,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:35:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 263 transitions. [2024-11-14 05:35:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 05:35:26,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:26,128 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:26,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (41)] Forceful destruction successful, exit code 0 [2024-11-14 05:35:26,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:26,329 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:26,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:26,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1667634451, now seen corresponding path program 1 times [2024-11-14 05:35:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:26,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055953642] [2024-11-14 05:35:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:26,331 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 [2024-11-14 05:35:26,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:26,333 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:26,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (42)] Waiting until timeout for monitored process [2024-11-14 05:35:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:26,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:35:26,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:35:26,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:26,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055953642] [2024-11-14 05:35:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055953642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:26,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:35:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323970913] [2024-11-14 05:35:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:35:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:35:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:35:26,811 INFO L87 Difference]: Start difference. First operand 217 states and 263 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 05:35:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:27,194 INFO L93 Difference]: Finished difference Result 229 states and 275 transitions. [2024-11-14 05:35:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:35:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-14 05:35:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:27,195 INFO L225 Difference]: With dead ends: 229 [2024-11-14 05:35:27,195 INFO L226 Difference]: Without dead ends: 227 [2024-11-14 05:35:27,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:35:27,196 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:27,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 444 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:35:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-14 05:35:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-11-14 05:35:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 192 states have (on average 1.1666666666666667) internal successors, (224), 195 states have internal predecessors, (224), 22 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-14 05:35:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 269 transitions. [2024-11-14 05:35:27,217 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 269 transitions. Word has length 61 [2024-11-14 05:35:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:27,218 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 269 transitions. [2024-11-14 05:35:27,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 05:35:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 269 transitions. [2024-11-14 05:35:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 05:35:27,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:27,220 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:27,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (42)] Ended with exit code 0 [2024-11-14 05:35:27,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:27,420 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:27,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1651005049, now seen corresponding path program 1 times [2024-11-14 05:35:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244866027] [2024-11-14 05:35:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:27,421 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 [2024-11-14 05:35:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:27,424 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:27,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (43)] Waiting until timeout for monitored process [2024-11-14 05:35:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:27,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:35:27,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 05:35:27,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:27,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:27,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244866027] [2024-11-14 05:35:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244866027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:27,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:35:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928100108] [2024-11-14 05:35:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:27,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:35:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:35:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:35:27,898 INFO L87 Difference]: Start difference. First operand 223 states and 269 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 05:35:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:28,335 INFO L93 Difference]: Finished difference Result 244 states and 290 transitions. [2024-11-14 05:35:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:35:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-14 05:35:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:28,337 INFO L225 Difference]: With dead ends: 244 [2024-11-14 05:35:28,337 INFO L226 Difference]: Without dead ends: 242 [2024-11-14 05:35:28,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:35:28,338 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 19 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:28,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 523 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:35:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-14 05:35:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2024-11-14 05:35:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 198 states have internal predecessors, (227), 22 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (23), 22 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-14 05:35:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2024-11-14 05:35:28,372 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 61 [2024-11-14 05:35:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:28,373 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2024-11-14 05:35:28,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 05:35:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2024-11-14 05:35:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 05:35:28,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:28,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:28,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (43)] Ended with exit code 0 [2024-11-14 05:35:28,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:28,576 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:28,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 970484103, now seen corresponding path program 1 times [2024-11-14 05:35:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217563503] [2024-11-14 05:35:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:28,577 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 [2024-11-14 05:35:28,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:28,579 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:28,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (44)] Waiting until timeout for monitored process [2024-11-14 05:35:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:28,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:35:28,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 05:35:33,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:33,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217563503] [2024-11-14 05:35:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217563503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:33,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-14 05:35:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473899039] [2024-11-14 05:35:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:33,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:35:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:35:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:35:33,253 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:35:39,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:45,121 INFO L93 Difference]: Finished difference Result 316 states and 384 transitions. [2024-11-14 05:35:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:35:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2024-11-14 05:35:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:45,125 INFO L225 Difference]: With dead ends: 316 [2024-11-14 05:35:45,125 INFO L226 Difference]: Without dead ends: 286 [2024-11-14 05:35:45,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:35:45,127 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 28 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:45,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 886 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2024-11-14 05:35:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-14 05:35:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 245. [2024-11-14 05:35:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 210 states have (on average 1.1666666666666667) internal successors, (245), 213 states have internal predecessors, (245), 25 states have call successors, (25), 7 states have call predecessors, (25), 9 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26) [2024-11-14 05:35:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 296 transitions. [2024-11-14 05:35:45,154 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 296 transitions. Word has length 66 [2024-11-14 05:35:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:45,155 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 296 transitions. [2024-11-14 05:35:45,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:35:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 296 transitions. [2024-11-14 05:35:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 05:35:45,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:45,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:45,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (44)] Forceful destruction successful, exit code 0 [2024-11-14 05:35:45,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:45,358 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:45,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:45,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1401255159, now seen corresponding path program 1 times [2024-11-14 05:35:45,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:45,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694420136] [2024-11-14 05:35:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:45,358 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 [2024-11-14 05:35:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:45,364 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:45,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (45)] Waiting until timeout for monitored process [2024-11-14 05:35:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:45,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:35:45,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:35:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 05:35:48,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:35:48,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:35:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694420136] [2024-11-14 05:35:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694420136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:35:48,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:35:48,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 05:35:48,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292826132] [2024-11-14 05:35:48,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:35:48,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:35:48,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:35:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:35:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:35:48,310 INFO L87 Difference]: Start difference. First operand 245 states and 296 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:35:54,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:35:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:35:57,890 INFO L93 Difference]: Finished difference Result 332 states and 405 transitions. [2024-11-14 05:35:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:35:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2024-11-14 05:35:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:35:57,893 INFO L225 Difference]: With dead ends: 332 [2024-11-14 05:35:57,893 INFO L226 Difference]: Without dead ends: 312 [2024-11-14 05:35:57,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:35:57,894 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 30 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:35:57,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 549 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2024-11-14 05:35:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-14 05:35:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 240. [2024-11-14 05:35:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 205 states have (on average 1.1658536585365853) internal successors, (239), 208 states have internal predecessors, (239), 25 states have call successors, (25), 7 states have call predecessors, (25), 9 states have return successors, (26), 25 states have call predecessors, (26), 23 states have call successors, (26) [2024-11-14 05:35:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2024-11-14 05:35:57,925 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 66 [2024-11-14 05:35:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:35:57,926 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2024-11-14 05:35:57,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:35:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2024-11-14 05:35:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 05:35:57,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:35:57,927 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:35:57,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (45)] Ended with exit code 0 [2024-11-14 05:35:58,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:35:58,128 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:35:58,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:35:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1769850328, now seen corresponding path program 1 times [2024-11-14 05:35:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:35:58,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578014092] [2024-11-14 05:35:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:35:58,129 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 [2024-11-14 05:35:58,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:35:58,131 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:35:58,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (46)] Waiting until timeout for monitored process [2024-11-14 05:35:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:35:58,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:35:58,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:36:02,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:36:06,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578014092] [2024-11-14 05:36:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578014092] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:36:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-14 05:36:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155641163] [2024-11-14 05:36:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:06,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:36:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:36:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-14 05:36:06,087 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:10,245 INFO L93 Difference]: Finished difference Result 305 states and 369 transitions. [2024-11-14 05:36:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:36:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2024-11-14 05:36:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:10,249 INFO L225 Difference]: With dead ends: 305 [2024-11-14 05:36:10,249 INFO L226 Difference]: Without dead ends: 286 [2024-11-14 05:36:10,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:36:10,250 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 17 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:10,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 511 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 05:36:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-14 05:36:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 268. [2024-11-14 05:36:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 229 states have (on average 1.1572052401746724) internal successors, (265), 233 states have internal predecessors, (265), 29 states have call successors, (29), 7 states have call predecessors, (29), 9 states have return successors, (30), 29 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-14 05:36:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2024-11-14 05:36:10,294 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 67 [2024-11-14 05:36:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:10,295 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2024-11-14 05:36:10,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2024-11-14 05:36:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 05:36:10,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:10,297 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:10,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (46)] Forceful destruction successful, exit code 0 [2024-11-14 05:36:10,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:36:10,498 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:10,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2008290126, now seen corresponding path program 1 times [2024-11-14 05:36:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:36:10,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79528404] [2024-11-14 05:36:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:10,499 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 [2024-11-14 05:36:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:36:10,504 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:36:10,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (47)] Waiting until timeout for monitored process [2024-11-14 05:36:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:10,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:36:10,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 05:36:17,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:19,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79528404] [2024-11-14 05:36:19,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79528404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:19,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481150910] [2024-11-14 05:36:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:19,602 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:36:19,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:36:19,605 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:36:19,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-14 05:36:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:19,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:36:19,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 05:36:28,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:36:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [481150910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:28,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:36:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 22 [2024-11-14 05:36:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906434512] [2024-11-14 05:36:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:28,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:36:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:36:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=581, Unknown=1, NotChecked=0, Total=650 [2024-11-14 05:36:28,802 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:37,483 INFO L93 Difference]: Finished difference Result 363 states and 442 transitions. [2024-11-14 05:36:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:36:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2024-11-14 05:36:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:37,487 INFO L225 Difference]: With dead ends: 363 [2024-11-14 05:36:37,487 INFO L226 Difference]: Without dead ends: 327 [2024-11-14 05:36:37,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=73, Invalid=628, Unknown=1, NotChecked=0, Total=702 [2024-11-14 05:36:37,488 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 28 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:37,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 856 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-14 05:36:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-14 05:36:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 277. [2024-11-14 05:36:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 237 states have (on average 1.1645569620253164) internal successors, (276), 241 states have internal predecessors, (276), 30 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (31), 30 states have call predecessors, (31), 28 states have call successors, (31) [2024-11-14 05:36:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 337 transitions. [2024-11-14 05:36:37,535 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 337 transitions. Word has length 67 [2024-11-14 05:36:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:37,536 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 337 transitions. [2024-11-14 05:36:37,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 337 transitions. [2024-11-14 05:36:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-14 05:36:37,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:37,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:37,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (47)] Ended with exit code 0 [2024-11-14 05:36:37,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2024-11-14 05:36:37,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:36:37,943 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:37,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1777204080, now seen corresponding path program 1 times [2024-11-14 05:36:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:36:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092255147] [2024-11-14 05:36:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:37,944 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 [2024-11-14 05:36:37,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:36:37,946 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:36:37,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (49)] Waiting until timeout for monitored process [2024-11-14 05:36:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:38,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:36:38,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 05:36:39,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:36:39,315 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092255147] [2024-11-14 05:36:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092255147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:39,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:36:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:36:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843488239] [2024-11-14 05:36:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:39,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:36:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:36:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:36:39,317 INFO L87 Difference]: Start difference. First operand 277 states and 337 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:42,530 INFO L93 Difference]: Finished difference Result 333 states and 402 transitions. [2024-11-14 05:36:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:36:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2024-11-14 05:36:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:42,532 INFO L225 Difference]: With dead ends: 333 [2024-11-14 05:36:42,532 INFO L226 Difference]: Without dead ends: 297 [2024-11-14 05:36:42,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:36:42,533 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 27 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:42,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 584 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-14 05:36:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-14 05:36:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 240. [2024-11-14 05:36:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 206 states have (on average 1.1504854368932038) internal successors, (237), 210 states have internal predecessors, (237), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (25), 24 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-14 05:36:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2024-11-14 05:36:42,558 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 67 [2024-11-14 05:36:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:42,559 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2024-11-14 05:36:42,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2024-11-14 05:36:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:36:42,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:42,561 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:42,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (49)] Ended with exit code 0 [2024-11-14 05:36:42,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:36:42,765 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:42,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash -899188034, now seen corresponding path program 1 times [2024-11-14 05:36:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:36:42,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589672319] [2024-11-14 05:36:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:42,766 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 [2024-11-14 05:36:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:36:42,771 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:36:42,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (50)] Waiting until timeout for monitored process [2024-11-14 05:36:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:42,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:36:42,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:36:43,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:36:43,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:43,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589672319] [2024-11-14 05:36:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589672319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:43,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:36:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:36:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672350781] [2024-11-14 05:36:43,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:43,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:36:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:36:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:36:43,327 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 05:36:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:43,978 INFO L93 Difference]: Finished difference Result 261 states and 307 transitions. [2024-11-14 05:36:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:36:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2024-11-14 05:36:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:43,981 INFO L225 Difference]: With dead ends: 261 [2024-11-14 05:36:43,981 INFO L226 Difference]: Without dead ends: 257 [2024-11-14 05:36:43,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:36:43,982 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 13 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:43,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 481 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:36:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-14 05:36:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 234. [2024-11-14 05:36:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.150753768844221) internal successors, (229), 204 states have internal predecessors, (229), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-14 05:36:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 278 transitions. [2024-11-14 05:36:44,012 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 278 transitions. Word has length 69 [2024-11-14 05:36:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:44,012 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 278 transitions. [2024-11-14 05:36:44,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 05:36:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 278 transitions. [2024-11-14 05:36:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:36:44,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:44,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:44,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (50)] Ended with exit code 0 [2024-11-14 05:36:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:36:44,218 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:44,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash -841929732, now seen corresponding path program 1 times [2024-11-14 05:36:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:36:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167269575] [2024-11-14 05:36:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:44,219 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 [2024-11-14 05:36:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:36:44,221 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:36:44,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (51)] Waiting until timeout for monitored process [2024-11-14 05:36:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:44,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:36:44,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 05:36:48,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:36:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:36:51,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:51,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167269575] [2024-11-14 05:36:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167269575] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:36:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:36:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-14 05:36:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568183230] [2024-11-14 05:36:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:51,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:36:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:36:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-14 05:36:51,878 INFO L87 Difference]: Start difference. First operand 234 states and 278 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:36:55,508 INFO L93 Difference]: Finished difference Result 266 states and 311 transitions. [2024-11-14 05:36:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:36:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2024-11-14 05:36:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:36:55,510 INFO L225 Difference]: With dead ends: 266 [2024-11-14 05:36:55,510 INFO L226 Difference]: Without dead ends: 248 [2024-11-14 05:36:55,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:36:55,511 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 11 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:36:55,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 548 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 05:36:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-14 05:36:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 230. [2024-11-14 05:36:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 195 states have (on average 1.1384615384615384) internal successors, (222), 201 states have internal predecessors, (222), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-14 05:36:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 271 transitions. [2024-11-14 05:36:55,544 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 271 transitions. Word has length 69 [2024-11-14 05:36:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:36:55,544 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 271 transitions. [2024-11-14 05:36:55,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:36:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 271 transitions. [2024-11-14 05:36:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:36:55,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:36:55,546 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:36:55,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (51)] Ended with exit code 0 [2024-11-14 05:36:55,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:36:55,746 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:36:55,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:36:55,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1496112838, now seen corresponding path program 1 times [2024-11-14 05:36:55,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:36:55,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776104720] [2024-11-14 05:36:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:36:55,748 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 [2024-11-14 05:36:55,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:36:55,750 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:36:55,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (52)] Waiting until timeout for monitored process [2024-11-14 05:36:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:36:55,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:36:55,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:36:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 05:36:59,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:36:59,480 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:36:59,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776104720] [2024-11-14 05:36:59,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776104720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:36:59,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:36:59,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-14 05:36:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277965324] [2024-11-14 05:36:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:36:59,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 05:36:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:36:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 05:36:59,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:36:59,482 INFO L87 Difference]: Start difference. First operand 230 states and 271 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:37:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:07,019 INFO L93 Difference]: Finished difference Result 284 states and 329 transitions. [2024-11-14 05:37:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:37:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2024-11-14 05:37:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:07,022 INFO L225 Difference]: With dead ends: 284 [2024-11-14 05:37:07,022 INFO L226 Difference]: Without dead ends: 268 [2024-11-14 05:37:07,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2024-11-14 05:37:07,023 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 44 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:07,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 916 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-14 05:37:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-14 05:37:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 236. [2024-11-14 05:37:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 201 states have (on average 1.1343283582089552) internal successors, (228), 207 states have internal predecessors, (228), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-14 05:37:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 277 transitions. [2024-11-14 05:37:07,063 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 277 transitions. Word has length 69 [2024-11-14 05:37:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:07,063 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 277 transitions. [2024-11-14 05:37:07,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:37:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 277 transitions. [2024-11-14 05:37:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:37:07,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:07,066 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:07,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (52)] Ended with exit code 0 [2024-11-14 05:37:07,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:07,266 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:07,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1787737208, now seen corresponding path program 1 times [2024-11-14 05:37:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492606773] [2024-11-14 05:37:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:07,267 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 [2024-11-14 05:37:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:07,269 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:07,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (53)] Waiting until timeout for monitored process [2024-11-14 05:37:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:07,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:37:07,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:37:07,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:07,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492606773] [2024-11-14 05:37:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492606773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:37:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:37:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138654255] [2024-11-14 05:37:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:07,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:37:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:37:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:37:07,734 INFO L87 Difference]: Start difference. First operand 236 states and 277 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 05:37:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:08,195 INFO L93 Difference]: Finished difference Result 254 states and 294 transitions. [2024-11-14 05:37:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:37:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2024-11-14 05:37:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:08,197 INFO L225 Difference]: With dead ends: 254 [2024-11-14 05:37:08,198 INFO L226 Difference]: Without dead ends: 166 [2024-11-14 05:37:08,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:37:08,199 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 13 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:08,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 474 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:37:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-14 05:37:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2024-11-14 05:37:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 129 states have internal predecessors, (144), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 05:37:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2024-11-14 05:37:08,238 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 69 [2024-11-14 05:37:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:08,239 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2024-11-14 05:37:08,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 05:37:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2024-11-14 05:37:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 05:37:08,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:08,240 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:08,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (53)] Forceful destruction successful, exit code 0 [2024-11-14 05:37:08,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:08,441 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:08,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1706797641, now seen corresponding path program 1 times [2024-11-14 05:37:08,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:08,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108396759] [2024-11-14 05:37:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:08,442 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 [2024-11-14 05:37:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:08,444 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:08,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (54)] Waiting until timeout for monitored process [2024-11-14 05:37:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:08,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:37:08,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:37:08,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:08,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108396759] [2024-11-14 05:37:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108396759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:37:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:37:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087871848] [2024-11-14 05:37:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:08,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:37:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:37:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:37:08,953 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:37:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:09,108 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2024-11-14 05:37:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:37:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-11-14 05:37:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:09,111 INFO L225 Difference]: With dead ends: 177 [2024-11-14 05:37:09,111 INFO L226 Difference]: Without dead ends: 131 [2024-11-14 05:37:09,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:37:09,113 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 15 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:09,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 267 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:37:09,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-14 05:37:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2024-11-14 05:37:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 107 states have internal predecessors, (118), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:37:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2024-11-14 05:37:09,139 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 70 [2024-11-14 05:37:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:09,140 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2024-11-14 05:37:09,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:37:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2024-11-14 05:37:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 05:37:09,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:09,141 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:09,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (54)] Ended with exit code 0 [2024-11-14 05:37:09,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:09,343 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:09,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash -537185657, now seen corresponding path program 1 times [2024-11-14 05:37:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935501840] [2024-11-14 05:37:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:09,344 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 [2024-11-14 05:37:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:09,347 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:09,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (55)] Waiting until timeout for monitored process [2024-11-14 05:37:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:09,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:37:09,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:37:11,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:12,841 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:12,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935501840] [2024-11-14 05:37:12,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935501840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1211581231] [2024-11-14 05:37:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:12,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:37:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:37:12,844 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:37:12,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2024-11-14 05:37:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:12,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:37:12,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 05:37:14,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1211581231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:14,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:37:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-14 05:37:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409663365] [2024-11-14 05:37:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:14,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:37:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:37:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:37:14,037 INFO L87 Difference]: Start difference. First operand 123 states and 140 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:37:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:14,929 INFO L93 Difference]: Finished difference Result 171 states and 190 transitions. [2024-11-14 05:37:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:37:14,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-11-14 05:37:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:14,932 INFO L225 Difference]: With dead ends: 171 [2024-11-14 05:37:14,932 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:37:14,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:37:14,934 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:14,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 312 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:37:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:37:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-14 05:37:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 107 states have internal predecessors, (117), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:37:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2024-11-14 05:37:14,957 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 70 [2024-11-14 05:37:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:14,958 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2024-11-14 05:37:14,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:37:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2024-11-14 05:37:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 05:37:14,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:14,959 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:14,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2024-11-14 05:37:15,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (55)] Ended with exit code 0 [2024-11-14 05:37:15,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:15,360 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:15,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash 164414217, now seen corresponding path program 1 times [2024-11-14 05:37:15,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244101907] [2024-11-14 05:37:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:15,361 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 [2024-11-14 05:37:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:15,365 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:15,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (57)] Waiting until timeout for monitored process [2024-11-14 05:37:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:15,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:37:15,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:37:17,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:19,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244101907] [2024-11-14 05:37:19,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244101907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [257336633] [2024-11-14 05:37:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:19,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:37:19,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:37:19,851 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:37:19,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2024-11-14 05:37:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:19,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:37:19,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:37:20,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:37:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [257336633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072279465] [2024-11-14 05:37:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:21,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:37:21,104 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:37:21,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-14 05:37:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:21,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:37:21,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 05:37:21,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 05:37:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072279465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:37:22,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:37:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8, 8, 8] total 11 [2024-11-14 05:37:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91315631] [2024-11-14 05:37:22,308 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-14 05:37:22,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:37:22,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:37:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:37:22,309 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:23,571 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2024-11-14 05:37:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:37:23,572 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 70 [2024-11-14 05:37:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:23,573 INFO L225 Difference]: With dead ends: 135 [2024-11-14 05:37:23,573 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 05:37:23,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 366 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:37:23,573 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 2 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:23,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 581 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:37:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 05:37:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-14 05:37:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 70 states have internal predecessors, (77), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:37:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-11-14 05:37:23,584 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 70 [2024-11-14 05:37:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:23,584 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-11-14 05:37:23,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-11-14 05:37:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:37:23,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:23,585 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:23,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2024-11-14 05:37:23,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (57)] Ended with exit code 0 [2024-11-14 05:37:24,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-14 05:37:24,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:37:24,186 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:24,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1862373464, now seen corresponding path program 1 times [2024-11-14 05:37:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190219658] [2024-11-14 05:37:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:24,187 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 [2024-11-14 05:37:24,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:24,189 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:24,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (60)] Waiting until timeout for monitored process [2024-11-14 05:37:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:24,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:37:24,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 05:37:26,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:26,984 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:26,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190219658] [2024-11-14 05:37:26,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190219658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:26,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:37:26,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:37:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405956470] [2024-11-14 05:37:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:26,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:37:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:37:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:37:26,985 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:31,803 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2024-11-14 05:37:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:37:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2024-11-14 05:37:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:31,805 INFO L225 Difference]: With dead ends: 105 [2024-11-14 05:37:31,805 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 05:37:31,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:37:31,807 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 14 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:31,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 537 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 05:37:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 05:37:31,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-14 05:37:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 70 states have internal predecessors, (76), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:37:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2024-11-14 05:37:31,829 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 74 [2024-11-14 05:37:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:31,829 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2024-11-14 05:37:31,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2024-11-14 05:37:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:37:31,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:31,830 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:31,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (60)] Ended with exit code 0 [2024-11-14 05:37:32,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:32,031 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:32,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1276533400, now seen corresponding path program 1 times [2024-11-14 05:37:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361306426] [2024-11-14 05:37:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:32,032 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 [2024-11-14 05:37:32,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:32,034 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:32,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (61)] Waiting until timeout for monitored process [2024-11-14 05:37:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:32,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:37:32,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 05:37:39,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:37:44,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:44,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361306426] [2024-11-14 05:37:44,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361306426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:37:44,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1265671072] [2024-11-14 05:37:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:44,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:37:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:37:44,091 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:37:44,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2024-11-14 05:37:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:44,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:37:44,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 05:37:45,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1265671072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:45,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:37:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 19 [2024-11-14 05:37:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513050640] [2024-11-14 05:37:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:45,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:37:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:37:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:37:45,485 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:37:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:46,329 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2024-11-14 05:37:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:37:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2024-11-14 05:37:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:46,331 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:37:46,331 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 05:37:46,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:37:46,331 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 8 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:46,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 240 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:37:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 05:37:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 05:37:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 57 states have internal predecessors, (60), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:37:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-14 05:37:46,338 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 74 [2024-11-14 05:37:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:46,339 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-14 05:37:46,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:37:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-14 05:37:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 05:37:46,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:37:46,339 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:46,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (61)] Ended with exit code 0 [2024-11-14 05:37:46,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2024-11-14 05:37:46,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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=3,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:37:46,740 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:37:46,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:37:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2034190205, now seen corresponding path program 1 times [2024-11-14 05:37:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:37:46,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866465952] [2024-11-14 05:37:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:37:46,741 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 [2024-11-14 05:37:46,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:37:46,745 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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) [2024-11-14 05:37:46,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (63)] Waiting until timeout for monitored process [2024-11-14 05:37:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:37:46,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:37:46,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:37:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 05:37:50,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:37:50,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:37:50,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866465952] [2024-11-14 05:37:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866465952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:37:50,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:37:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 05:37:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254052537] [2024-11-14 05:37:50,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:37:50,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:37:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:37:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:37:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:37:50,306 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:37:53,890 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2024-11-14 05:37:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:37:53,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 75 [2024-11-14 05:37:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:37:53,892 INFO L225 Difference]: With dead ends: 69 [2024-11-14 05:37:53,893 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:37:53,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:37:53,893 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 3 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:37:53,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 426 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 05:37:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:37:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:37:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-14 05:37:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:37:53,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2024-11-14 05:37:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:37:53,895 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:37:53,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:37:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:37:53,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:37:53,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-14 05:37:53,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-14 05:37:53,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 (63)] Ended with exit code 0 [2024-11-14 05:37:54,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ae3482e-c314-404d-a586-33ed35dfd368/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 [2024-11-14 05:37:54,104 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:37:54,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:39:57,376 WARN L286 SmtUtils]: Spent 2.05m on a formula simplification. DAG size of input: 172 DAG size of output: 213 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-14 05:40:04,083 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 215 DAG size of output: 234 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-14 05:40:12,181 WARN L286 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 169 DAG size of output: 102 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-14 05:40:23,052 WARN L286 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 213 DAG size of output: 38 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)