./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje --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 0ace7a09f7f3838d487cff246c419fb4727963d1c82067e9bae91cd3f078ad54 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:04:01,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:04:01,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:04:01,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:04:01,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:04:01,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:04:01,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:04:01,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:04:01,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:04:01,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:04:01,275 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:04:01,276 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:04:01,276 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:04:01,277 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:04:01,277 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:04:01,277 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:04:01,278 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:04:01,278 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:04:01,278 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:04:01,279 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:04:01,282 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:04:01,283 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:04:01,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:04:01,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:04:01,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:04:01,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:04:01,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:04:01,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:04:01,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:04:01,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:04:01,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:04:01,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:04:01,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:04:01,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:04:01,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:04:01,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:04:01,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:04:01,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:04:01,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:04:01,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:04:01,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:04:01,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:04:01,311 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:04:01,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:04:01,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:04:01,312 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:04:01,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:04:01,313 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ace7a09f7f3838d487cff246c419fb4727963d1c82067e9bae91cd3f078ad54 [2024-11-09 05:04:01,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:04:01,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:04:01,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:04:01,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:04:01,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:04:01,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-09 05:04:03,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:04:04,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:04:04,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2024-11-09 05:04:04,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/e5c3f53e6/69915f127fd64a3c932a97a0f078efcb/FLAG92f20789c [2024-11-09 05:04:04,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/e5c3f53e6/69915f127fd64a3c932a97a0f078efcb [2024-11-09 05:04:04,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:04:04,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:04:04,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:04:04,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:04:04,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:04:04,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:04,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1656999f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04, skipping insertion in model container [2024-11-09 05:04:04,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:04,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:04:04,789 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_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2024-11-09 05:04:04,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:04:04,825 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:04:04,970 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_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2024-11-09 05:04:04,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:04:04,996 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:04:04,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04 WrapperNode [2024-11-09 05:04:04,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:04:04,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:04:04,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:04:04,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:04:05,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,085 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1022 [2024-11-09 05:04:05,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:04:05,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:04:05,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:04:05,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:04:05,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:04:05,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:04:05,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:04:05,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:04:05,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (1/1) ... [2024-11-09 05:04:05,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:04:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:05,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:04:05,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:04:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:04:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:04:05,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:04:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:04:05,502 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:04:05,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:04:07,127 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-09 05:04:07,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:04:08,601 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:04:08,603 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:04:08,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:08 BoogieIcfgContainer [2024-11-09 05:04:08,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:04:08,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:04:08,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:04:08,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:04:08,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:04:04" (1/3) ... [2024-11-09 05:04:08,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fdd806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:08, skipping insertion in model container [2024-11-09 05:04:08,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:04:04" (2/3) ... [2024-11-09 05:04:08,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fdd806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:04:08, skipping insertion in model container [2024-11-09 05:04:08,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:04:08" (3/3) ... [2024-11-09 05:04:08,620 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2024-11-09 05:04:08,647 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:04:08,649 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:04:08,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:04:08,770 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;@6fdcbc15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:04:08,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:04:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.6231884057971016) internal successors, (224), 139 states have internal predecessors, (224), 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) [2024-11-09 05:04:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 05:04:08,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:08,794 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:08,795 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:08,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash -898230460, now seen corresponding path program 1 times [2024-11-09 05:04:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312549495] [2024-11-09 05:04:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:16,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:16,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312549495] [2024-11-09 05:04:16,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312549495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:16,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307469920] [2024-11-09 05:04:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:16,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:16,075 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.6231884057971016) internal successors, (224), 139 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-09 05:04:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:16,433 INFO L93 Difference]: Finished difference Result 177 states and 288 transitions. [2024-11-09 05:04:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-09 05:04:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:16,446 INFO L225 Difference]: With dead ends: 177 [2024-11-09 05:04:16,446 INFO L226 Difference]: Without dead ends: 158 [2024-11-09 05:04:16,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:16,453 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 26 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:16,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 539 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-09 05:04:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2024-11-09 05:04:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6122448979591837) internal successors, (237), 147 states have internal predecessors, (237), 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) [2024-11-09 05:04:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 237 transitions. [2024-11-09 05:04:16,504 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 237 transitions. Word has length 54 [2024-11-09 05:04:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:16,506 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 237 transitions. [2024-11-09 05:04:16,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-09 05:04:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 237 transitions. [2024-11-09 05:04:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 05:04:16,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:16,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:16,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:04:16,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:16,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2143544066, now seen corresponding path program 1 times [2024-11-09 05:04:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304306406] [2024-11-09 05:04:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:20,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304306406] [2024-11-09 05:04:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304306406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:20,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244339399] [2024-11-09 05:04:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:20,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:20,262 INFO L87 Difference]: Start difference. First operand 148 states and 237 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-09 05:04:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:20,602 INFO L93 Difference]: Finished difference Result 180 states and 285 transitions. [2024-11-09 05:04:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-09 05:04:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:20,605 INFO L225 Difference]: With dead ends: 180 [2024-11-09 05:04:20,605 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 05:04:20,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:20,608 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 24 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:20,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 552 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 05:04:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-09 05:04:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6054421768707483) internal successors, (236), 147 states have internal predecessors, (236), 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) [2024-11-09 05:04:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 236 transitions. [2024-11-09 05:04:20,629 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 236 transitions. Word has length 55 [2024-11-09 05:04:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:20,630 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 236 transitions. [2024-11-09 05:04:20,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-09 05:04:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 236 transitions. [2024-11-09 05:04:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 05:04:20,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:20,636 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:20,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:04:20,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:20,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:20,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2088108435, now seen corresponding path program 1 times [2024-11-09 05:04:20,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:20,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396196592] [2024-11-09 05:04:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:24,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396196592] [2024-11-09 05:04:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396196592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623461140] [2024-11-09 05:04:24,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:24,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:24,240 INFO L87 Difference]: Start difference. First operand 148 states and 236 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-09 05:04:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:24,528 INFO L93 Difference]: Finished difference Result 180 states and 284 transitions. [2024-11-09 05:04:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2024-11-09 05:04:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:24,531 INFO L225 Difference]: With dead ends: 180 [2024-11-09 05:04:24,531 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 05:04:24,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:24,534 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:24,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 552 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 05:04:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-09 05:04:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.598639455782313) internal successors, (235), 147 states have internal predecessors, (235), 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) [2024-11-09 05:04:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 235 transitions. [2024-11-09 05:04:24,545 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 235 transitions. Word has length 56 [2024-11-09 05:04:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:24,546 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 235 transitions. [2024-11-09 05:04:24,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-09 05:04:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 235 transitions. [2024-11-09 05:04:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 05:04:24,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:24,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:24,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:04:24,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:24,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash -364152121, now seen corresponding path program 1 times [2024-11-09 05:04:24,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:24,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347775109] [2024-11-09 05:04:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:24,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:27,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347775109] [2024-11-09 05:04:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347775109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:27,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:27,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162771151] [2024-11-09 05:04:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:27,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:27,701 INFO L87 Difference]: Start difference. First operand 148 states and 235 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 05:04:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:28,053 INFO L93 Difference]: Finished difference Result 180 states and 283 transitions. [2024-11-09 05:04:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2024-11-09 05:04:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:28,056 INFO L225 Difference]: With dead ends: 180 [2024-11-09 05:04:28,057 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 05:04:28,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:28,059 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 20 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:28,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 383 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 05:04:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-09 05:04:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5918367346938775) internal successors, (234), 147 states have internal predecessors, (234), 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) [2024-11-09 05:04:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 234 transitions. [2024-11-09 05:04:28,078 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 234 transitions. Word has length 57 [2024-11-09 05:04:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:28,078 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 234 transitions. [2024-11-09 05:04:28,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 05:04:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 234 transitions. [2024-11-09 05:04:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:04:28,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:28,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:28,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:04:28,085 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:28,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1544337814, now seen corresponding path program 1 times [2024-11-09 05:04:28,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:28,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844615955] [2024-11-09 05:04:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:28,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:31,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844615955] [2024-11-09 05:04:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844615955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447980922] [2024-11-09 05:04:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:31,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:31,138 INFO L87 Difference]: Start difference. First operand 148 states and 234 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-09 05:04:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:31,414 INFO L93 Difference]: Finished difference Result 180 states and 282 transitions. [2024-11-09 05:04:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:31,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2024-11-09 05:04:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:31,417 INFO L225 Difference]: With dead ends: 180 [2024-11-09 05:04:31,417 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 05:04:31,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:31,419 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 18 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:31,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 552 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 05:04:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-09 05:04:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5850340136054422) internal successors, (233), 147 states have internal predecessors, (233), 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) [2024-11-09 05:04:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 233 transitions. [2024-11-09 05:04:31,429 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 233 transitions. Word has length 58 [2024-11-09 05:04:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:31,430 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 233 transitions. [2024-11-09 05:04:31,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-11-09 05:04:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 233 transitions. [2024-11-09 05:04:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:04:31,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:31,433 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:31,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:04:31,433 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:31,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 867620062, now seen corresponding path program 1 times [2024-11-09 05:04:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:31,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937965854] [2024-11-09 05:04:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:35,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:35,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937965854] [2024-11-09 05:04:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937965854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:35,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808545053] [2024-11-09 05:04:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:35,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:35,250 INFO L87 Difference]: Start difference. First operand 148 states and 233 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-09 05:04:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:35,481 INFO L93 Difference]: Finished difference Result 178 states and 278 transitions. [2024-11-09 05:04:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:35,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2024-11-09 05:04:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:35,487 INFO L225 Difference]: With dead ends: 178 [2024-11-09 05:04:35,487 INFO L226 Difference]: Without dead ends: 158 [2024-11-09 05:04:35,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:35,488 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 15 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:35,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 377 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:04:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-09 05:04:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 149. [2024-11-09 05:04:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5810810810810811) internal successors, (234), 148 states have internal predecessors, (234), 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) [2024-11-09 05:04:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 234 transitions. [2024-11-09 05:04:35,497 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 234 transitions. Word has length 60 [2024-11-09 05:04:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:35,498 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 234 transitions. [2024-11-09 05:04:35,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-09 05:04:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 234 transitions. [2024-11-09 05:04:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:04:35,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:35,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:35,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:04:35,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:35,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1038373758, now seen corresponding path program 1 times [2024-11-09 05:04:35,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:35,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850302888] [2024-11-09 05:04:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:38,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850302888] [2024-11-09 05:04:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850302888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641144086] [2024-11-09 05:04:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:38,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:38,845 INFO L87 Difference]: Start difference. First operand 149 states and 234 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-09 05:04:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:39,052 INFO L93 Difference]: Finished difference Result 179 states and 279 transitions. [2024-11-09 05:04:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:39,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2024-11-09 05:04:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:39,056 INFO L225 Difference]: With dead ends: 179 [2024-11-09 05:04:39,056 INFO L226 Difference]: Without dead ends: 159 [2024-11-09 05:04:39,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:39,058 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 12 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:39,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 389 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:04:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-09 05:04:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2024-11-09 05:04:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 150 states have internal predecessors, (235), 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) [2024-11-09 05:04:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 235 transitions. [2024-11-09 05:04:39,077 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 235 transitions. Word has length 61 [2024-11-09 05:04:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:39,078 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 235 transitions. [2024-11-09 05:04:39,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-09 05:04:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 235 transitions. [2024-11-09 05:04:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 05:04:39,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:39,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:39,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:04:39,083 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:39,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1340165372, now seen corresponding path program 1 times [2024-11-09 05:04:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11447459] [2024-11-09 05:04:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:43,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11447459] [2024-11-09 05:04:43,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11447459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:43,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:43,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879369374] [2024-11-09 05:04:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:43,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:04:43,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:04:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:43,102 INFO L87 Difference]: Start difference. First operand 151 states and 235 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-09 05:04:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:43,279 INFO L93 Difference]: Finished difference Result 179 states and 276 transitions. [2024-11-09 05:04:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:04:43,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2024-11-09 05:04:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:43,281 INFO L225 Difference]: With dead ends: 179 [2024-11-09 05:04:43,281 INFO L226 Difference]: Without dead ends: 159 [2024-11-09 05:04:43,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:04:43,283 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:43,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 380 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:04:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-09 05:04:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2024-11-09 05:04:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 151 states have internal predecessors, (236), 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) [2024-11-09 05:04:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 236 transitions. [2024-11-09 05:04:43,290 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 236 transitions. Word has length 63 [2024-11-09 05:04:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:43,290 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 236 transitions. [2024-11-09 05:04:43,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-09 05:04:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 236 transitions. [2024-11-09 05:04:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 05:04:43,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:43,292 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:43,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:04:43,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:43,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1392826582, now seen corresponding path program 1 times [2024-11-09 05:04:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706510578] [2024-11-09 05:04:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:45,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706510578] [2024-11-09 05:04:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706510578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:04:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995604122] [2024-11-09 05:04:45,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:45,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:04:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:04:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:04:45,692 INFO L87 Difference]: Start difference. First operand 152 states and 236 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-09 05:04:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:45,978 INFO L93 Difference]: Finished difference Result 181 states and 279 transitions. [2024-11-09 05:04:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:04:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2024-11-09 05:04:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:45,982 INFO L225 Difference]: With dead ends: 181 [2024-11-09 05:04:45,982 INFO L226 Difference]: Without dead ends: 161 [2024-11-09 05:04:45,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:04:45,983 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 10 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:45,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 748 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-09 05:04:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2024-11-09 05:04:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.5454545454545454) internal successors, (238), 154 states have internal predecessors, (238), 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) [2024-11-09 05:04:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 238 transitions. [2024-11-09 05:04:45,989 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 238 transitions. Word has length 64 [2024-11-09 05:04:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:45,989 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 238 transitions. [2024-11-09 05:04:45,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-09 05:04:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 238 transitions. [2024-11-09 05:04:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:04:45,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:45,991 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:45,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:04:45,991 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:45,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1852499606, now seen corresponding path program 1 times [2024-11-09 05:04:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277353784] [2024-11-09 05:04:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:04:53,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:53,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277353784] [2024-11-09 05:04:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277353784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:53,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317614712] [2024-11-09 05:04:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:53,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:53,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:53,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:53,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:04:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:54,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:04:54,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:05:24,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:13:07,968 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 05:13:07,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-09 05:13:07,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 05:13:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1109566361] [2024-11-09 05:13:07,999 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2024-11-09 05:13:07,999 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:13:08,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:13:08,012 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:13:08,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:13:08,122 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 05:13:08,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:13:08,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-09 05:13:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815623143] [2024-11-09 05:13:08,131 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:13:08,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:13:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:13:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:13:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:13:08,133 INFO L87 Difference]: Start difference. First operand 155 states and 238 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-09 05:13:08,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:13:08,136 INFO L432 NwaCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 [2024-11-09 05:13:08,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:13:08,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:13:08,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:13:08,338 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 05:13:08,340 INFO L158 Benchmark]: Toolchain (without parser) took 544074.26ms. Allocated memory was 157.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 112.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 437.1MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,340 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 124.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:13:08,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 729.99ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 84.1MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.12ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 78.5MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,341 INFO L158 Benchmark]: Boogie Preprocessor took 74.56ms. Allocated memory is still 157.3MB. Free memory was 78.5MB in the beginning and 73.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,342 INFO L158 Benchmark]: RCFGBuilder took 3442.52ms. Allocated memory was 157.3MB in the beginning and 228.6MB in the end (delta: 71.3MB). Free memory was 73.1MB in the beginning and 166.6MB in the end (delta: -93.4MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,342 INFO L158 Benchmark]: TraceAbstraction took 539732.84ms. Allocated memory was 228.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 165.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. [2024-11-09 05:13:08,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 124.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 729.99ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 84.1MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.12ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 78.5MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.56ms. Allocated memory is still 157.3MB. Free memory was 78.5MB in the beginning and 73.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3442.52ms. Allocated memory was 157.3MB in the beginning and 228.6MB in the end (delta: 71.3MB). Free memory was 73.1MB in the beginning and 166.6MB in the end (delta: -93.4MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. * TraceAbstraction took 539732.84ms. Allocated memory was 228.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 165.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 415.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje --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 0ace7a09f7f3838d487cff246c419fb4727963d1c82067e9bae91cd3f078ad54 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:13:10,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:13:10,732 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 05:13:10,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:13:10,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:13:10,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:13:10,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:13:10,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:13:10,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:13:10,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:13:10,778 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:13:10,778 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:13:10,779 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:13:10,780 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:13:10,781 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:13:10,781 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:13:10,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:13:10,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:13:10,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:13:10,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:13:10,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:13:10,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:13:10,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:13:10,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:13:10,788 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:13:10,788 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:13:10,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:13:10,789 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:13:10,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:13:10,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:13:10,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:13:10,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:13:10,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:13:10,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:13:10,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:13:10,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:13:10,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:13:10,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:13:10,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:13:10,795 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:13:10,796 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:13:10,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:13:10,797 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:13:10,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ace7a09f7f3838d487cff246c419fb4727963d1c82067e9bae91cd3f078ad54 [2024-11-09 05:13:11,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:13:11,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:13:11,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:13:11,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:13:11,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:13:11,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-09 05:13:13,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:13:13,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:13:13,612 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2024-11-09 05:13:13,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/9cb2a3dda/2a775e77c4744db5b2b10617ac80fedc/FLAGc37e14b2c [2024-11-09 05:13:13,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/data/9cb2a3dda/2a775e77c4744db5b2b10617ac80fedc [2024-11-09 05:13:13,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:13:13,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:13:13,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:13:13,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:13:13,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:13:13,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:13:13" (1/1) ... [2024-11-09 05:13:13,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143db610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:13, skipping insertion in model container [2024-11-09 05:13:13,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:13:13" (1/1) ... [2024-11-09 05:13:13,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:13:14,195 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_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2024-11-09 05:13:14,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:13:14,248 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:13:14,400 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_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2024-11-09 05:13:14,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:13:14,425 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:13:14,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14 WrapperNode [2024-11-09 05:13:14,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:13:14,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:13:14,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:13:14,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:13:14,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,534 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1000 [2024-11-09 05:13:14,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:13:14,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:13:14,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:13:14,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:13:14,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:13:14,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:13:14,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:13:14,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:13:14,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (1/1) ... [2024-11-09 05:13:14,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:13:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:13:14,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:13:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:13:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:13:14,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:13:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:13:14,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:13:14,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:13:14,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:13:16,239 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-09 05:13:16,239 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:13:16,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:13:16,273 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:13:16,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:13:16 BoogieIcfgContainer [2024-11-09 05:13:16,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:13:16,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:13:16,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:13:16,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:13:16,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:13:13" (1/3) ... [2024-11-09 05:13:16,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656e5957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:13:16, skipping insertion in model container [2024-11-09 05:13:16,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:14" (2/3) ... [2024-11-09 05:13:16,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656e5957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:13:16, skipping insertion in model container [2024-11-09 05:13:16,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:13:16" (3/3) ... [2024-11-09 05:13:16,283 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2024-11-09 05:13:16,304 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:13:16,304 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:13:16,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:13:16,391 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;@1986abee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:13:16,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:13:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 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) [2024-11-09 05:13:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:13:16,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:16,412 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:16,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:16,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash 280674384, now seen corresponding path program 1 times [2024-11-09 05:13:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617254090] [2024-11-09 05:13:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:16,432 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 [2024-11-09 05:13:16,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:16,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:16,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:16,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 05:13:16,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:16,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:16,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:16,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617254090] [2024-11-09 05:13:16,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617254090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:16,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:16,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:13:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711879453] [2024-11-09 05:13:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:16,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:13:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:13:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:13:16,823 INFO L87 Difference]: Start difference. First operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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) [2024-11-09 05:13:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:16,876 INFO L93 Difference]: Finished difference Result 417 states and 751 transitions. [2024-11-09 05:13:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:13:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2024-11-09 05:13:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:16,890 INFO L225 Difference]: With dead ends: 417 [2024-11-09 05:13:16,890 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 05:13:16,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:13:16,900 INFO L432 NwaCegarLoop]: 551 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, 551 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 [2024-11-09 05:13:16,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:13:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 05:13:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-11-09 05:13:16,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.8184818481848184) internal successors, (551), 303 states have internal predecessors, (551), 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) [2024-11-09 05:13:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 551 transitions. [2024-11-09 05:13:16,963 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 551 transitions. Word has length 77 [2024-11-09 05:13:16,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:16,964 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 551 transitions. [2024-11-09 05:13:16,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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) [2024-11-09 05:13:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 551 transitions. [2024-11-09 05:13:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:13:16,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:16,969 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:16,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:17,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:17,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:17,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 146660878, now seen corresponding path program 1 times [2024-11-09 05:13:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849444456] [2024-11-09 05:13:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:17,172 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 [2024-11-09 05:13:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:17,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:17,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:17,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:13:17,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:17,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:17,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:17,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849444456] [2024-11-09 05:13:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849444456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:17,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:13:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271193772] [2024-11-09 05:13:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:17,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:13:17,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:13:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:17,540 INFO L87 Difference]: Start difference. First operand 304 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-09 05:13:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:17,724 INFO L93 Difference]: Finished difference Result 416 states and 744 transitions. [2024-11-09 05:13:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-09 05:13:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:17,728 INFO L225 Difference]: With dead ends: 416 [2024-11-09 05:13:17,731 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 05:13:17,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:17,733 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 0 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:17,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2145 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 05:13:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-11-09 05:13:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.6666666666666667) internal successors, (505), 303 states have internal predecessors, (505), 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) [2024-11-09 05:13:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 505 transitions. [2024-11-09 05:13:17,770 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 505 transitions. Word has length 77 [2024-11-09 05:13:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:17,770 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 505 transitions. [2024-11-09 05:13:17,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-09 05:13:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 505 transitions. [2024-11-09 05:13:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 05:13:17,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:17,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:17,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:13:17,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:17,982 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:17,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -73747132, now seen corresponding path program 1 times [2024-11-09 05:13:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789566873] [2024-11-09 05:13:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:17,984 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 [2024-11-09 05:13:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:17,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:17,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:18,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:13:18,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:18,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:18,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789566873] [2024-11-09 05:13:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789566873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:13:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360763503] [2024-11-09 05:13:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:18,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:13:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:13:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:18,354 INFO L87 Difference]: Start difference. First operand 304 states and 505 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2024-11-09 05:13:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:18,429 INFO L93 Difference]: Finished difference Result 508 states and 861 transitions. [2024-11-09 05:13:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:13:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2024-11-09 05:13:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:18,434 INFO L225 Difference]: With dead ends: 508 [2024-11-09 05:13:18,436 INFO L226 Difference]: Without dead ends: 400 [2024-11-09 05:13:18,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:18,438 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 158 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:18,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 946 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-09 05:13:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 397. [2024-11-09 05:13:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.6767676767676767) internal successors, (664), 396 states have internal predecessors, (664), 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) [2024-11-09 05:13:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 664 transitions. [2024-11-09 05:13:18,469 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 664 transitions. Word has length 122 [2024-11-09 05:13:18,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:18,471 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 664 transitions. [2024-11-09 05:13:18,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2024-11-09 05:13:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 664 transitions. [2024-11-09 05:13:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:13:18,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:18,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:18,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:13:18,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:18,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:18,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1021142728, now seen corresponding path program 1 times [2024-11-09 05:13:18,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089454257] [2024-11-09 05:13:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:18,682 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 [2024-11-09 05:13:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:18,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:18,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 05:13:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:18,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:18,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:19,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:19,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:19,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089454257] [2024-11-09 05:13:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089454257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:19,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720643658] [2024-11-09 05:13:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:19,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:19,153 INFO L87 Difference]: Start difference. First operand 397 states and 664 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-09 05:13:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:19,286 INFO L93 Difference]: Finished difference Result 1517 states and 2509 transitions. [2024-11-09 05:13:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 125 [2024-11-09 05:13:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:19,292 INFO L225 Difference]: With dead ends: 1517 [2024-11-09 05:13:19,292 INFO L226 Difference]: Without dead ends: 1131 [2024-11-09 05:13:19,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:19,295 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 1159 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:19,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1430 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2024-11-09 05:13:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 779. [2024-11-09 05:13:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 1.6619537275064267) internal successors, (1293), 778 states have internal predecessors, (1293), 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) [2024-11-09 05:13:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1293 transitions. [2024-11-09 05:13:19,326 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1293 transitions. Word has length 125 [2024-11-09 05:13:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:19,326 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1293 transitions. [2024-11-09 05:13:19,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-09 05:13:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1293 transitions. [2024-11-09 05:13:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 05:13:19,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:19,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:19,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-09 05:13:19,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:19,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:19,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1072451911, now seen corresponding path program 1 times [2024-11-09 05:13:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051076709] [2024-11-09 05:13:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:19,535 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 [2024-11-09 05:13:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:19,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:19,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 05:13:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:19,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:13:19,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:19,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:19,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051076709] [2024-11-09 05:13:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051076709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:19,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:13:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839963107] [2024-11-09 05:13:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:19,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:13:19,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:13:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:19,795 INFO L87 Difference]: Start difference. First operand 779 states and 1293 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-09 05:13:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:19,844 INFO L93 Difference]: Finished difference Result 1381 states and 2337 transitions. [2024-11-09 05:13:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:13:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2024-11-09 05:13:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:19,849 INFO L225 Difference]: With dead ends: 1381 [2024-11-09 05:13:19,849 INFO L226 Difference]: Without dead ends: 985 [2024-11-09 05:13:19,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:19,851 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 176 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:19,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:13:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-11-09 05:13:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 965. [2024-11-09 05:13:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.6711618257261411) internal successors, (1611), 964 states have internal predecessors, (1611), 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) [2024-11-09 05:13:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1611 transitions. [2024-11-09 05:13:19,878 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1611 transitions. Word has length 126 [2024-11-09 05:13:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:19,879 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1611 transitions. [2024-11-09 05:13:19,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-09 05:13:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1611 transitions. [2024-11-09 05:13:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 05:13:19,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:19,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:19,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-09 05:13:20,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:20,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:20,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1291306629, now seen corresponding path program 1 times [2024-11-09 05:13:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434218052] [2024-11-09 05:13:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:20,085 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 [2024-11-09 05:13:20,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:20,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:20,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:20,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:20,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:20,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:20,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434218052] [2024-11-09 05:13:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434218052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:20,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704017021] [2024-11-09 05:13:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:20,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:20,619 INFO L87 Difference]: Start difference. First operand 965 states and 1611 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-09 05:13:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:20,770 INFO L93 Difference]: Finished difference Result 3555 states and 5878 transitions. [2024-11-09 05:13:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2024-11-09 05:13:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:20,779 INFO L225 Difference]: With dead ends: 3555 [2024-11-09 05:13:20,780 INFO L226 Difference]: Without dead ends: 2602 [2024-11-09 05:13:20,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:20,782 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 1154 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:20,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1431 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-11-09 05:13:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1900. [2024-11-09 05:13:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 1.6587677725118484) internal successors, (3150), 1899 states have internal predecessors, (3150), 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) [2024-11-09 05:13:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 3150 transitions. [2024-11-09 05:13:20,854 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 3150 transitions. Word has length 126 [2024-11-09 05:13:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:20,855 INFO L471 AbstractCegarLoop]: Abstraction has 1900 states and 3150 transitions. [2024-11-09 05:13:20,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-09 05:13:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 3150 transitions. [2024-11-09 05:13:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 05:13:20,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:20,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:20,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 05:13:21,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:21,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:21,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash -814003390, now seen corresponding path program 1 times [2024-11-09 05:13:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118601856] [2024-11-09 05:13:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:21,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:21,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:21,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:21,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:21,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:21,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:21,540 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:21,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118601856] [2024-11-09 05:13:21,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118601856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:21,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:21,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343015053] [2024-11-09 05:13:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:21,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:21,543 INFO L87 Difference]: Start difference. First operand 1900 states and 3150 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-09 05:13:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:21,677 INFO L93 Difference]: Finished difference Result 5533 states and 9164 transitions. [2024-11-09 05:13:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 127 [2024-11-09 05:13:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:21,689 INFO L225 Difference]: With dead ends: 5533 [2024-11-09 05:13:21,689 INFO L226 Difference]: Without dead ends: 3660 [2024-11-09 05:13:21,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:21,693 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 395 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:21,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1444 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2024-11-09 05:13:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3658. [2024-11-09 05:13:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 1.6439704675963904) internal successors, (6012), 3657 states have internal predecessors, (6012), 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) [2024-11-09 05:13:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 6012 transitions. [2024-11-09 05:13:21,791 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 6012 transitions. Word has length 127 [2024-11-09 05:13:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:21,792 INFO L471 AbstractCegarLoop]: Abstraction has 3658 states and 6012 transitions. [2024-11-09 05:13:21,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-09 05:13:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 6012 transitions. [2024-11-09 05:13:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 05:13:21,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:21,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:21,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:22,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:22,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:22,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1624226049, now seen corresponding path program 1 times [2024-11-09 05:13:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:22,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299266966] [2024-11-09 05:13:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:22,002 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 [2024-11-09 05:13:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:22,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:22,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:22,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:13:22,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:22,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:22,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:22,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299266966] [2024-11-09 05:13:22,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299266966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:22,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:22,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:13:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124996855] [2024-11-09 05:13:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:22,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:13:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:13:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:22,331 INFO L87 Difference]: Start difference. First operand 3658 states and 6012 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-09 05:13:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:22,409 INFO L93 Difference]: Finished difference Result 7811 states and 13068 transitions. [2024-11-09 05:13:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:13:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2024-11-09 05:13:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:22,426 INFO L225 Difference]: With dead ends: 7811 [2024-11-09 05:13:22,427 INFO L226 Difference]: Without dead ends: 5625 [2024-11-09 05:13:22,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:22,431 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 156 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:22,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 959 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:13:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5625 states. [2024-11-09 05:13:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5625 to 5600. [2024-11-09 05:13:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 1.6574388283622075) internal successors, (9280), 5599 states have internal predecessors, (9280), 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) [2024-11-09 05:13:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 9280 transitions. [2024-11-09 05:13:22,616 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 9280 transitions. Word has length 128 [2024-11-09 05:13:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:22,617 INFO L471 AbstractCegarLoop]: Abstraction has 5600 states and 9280 transitions. [2024-11-09 05:13:22,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-09 05:13:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 9280 transitions. [2024-11-09 05:13:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 05:13:22,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:22,626 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:22,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 05:13:22,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:22,827 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:22,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash -317839209, now seen corresponding path program 1 times [2024-11-09 05:13:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396629393] [2024-11-09 05:13:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:22,828 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 [2024-11-09 05:13:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:22,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:23,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:23,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:23,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:23,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396629393] [2024-11-09 05:13:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396629393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799549057] [2024-11-09 05:13:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:23,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:23,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:23,383 INFO L87 Difference]: Start difference. First operand 5600 states and 9280 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-09 05:13:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:23,594 INFO L93 Difference]: Finished difference Result 18978 states and 31132 transitions. [2024-11-09 05:13:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:23,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2024-11-09 05:13:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:23,636 INFO L225 Difference]: With dead ends: 18978 [2024-11-09 05:13:23,636 INFO L226 Difference]: Without dead ends: 13514 [2024-11-09 05:13:23,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:23,645 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 1052 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:23,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1445 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13514 states. [2024-11-09 05:13:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13514 to 11000. [2024-11-09 05:13:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11000 states, 10999 states have (on average 1.6451495590508227) internal successors, (18095), 10999 states have internal predecessors, (18095), 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) [2024-11-09 05:13:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11000 states to 11000 states and 18095 transitions. [2024-11-09 05:13:24,008 INFO L78 Accepts]: Start accepts. Automaton has 11000 states and 18095 transitions. Word has length 131 [2024-11-09 05:13:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:24,009 INFO L471 AbstractCegarLoop]: Abstraction has 11000 states and 18095 transitions. [2024-11-09 05:13:24,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-09 05:13:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11000 states and 18095 transitions. [2024-11-09 05:13:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 05:13:24,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:24,020 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:24,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:24,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:24,223 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:24,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1854666040, now seen corresponding path program 1 times [2024-11-09 05:13:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699025407] [2024-11-09 05:13:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:24,225 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 [2024-11-09 05:13:24,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:24,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:24,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:24,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:24,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:24,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699025407] [2024-11-09 05:13:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699025407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195200880] [2024-11-09 05:13:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:24,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:24,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:24,862 INFO L87 Difference]: Start difference. First operand 11000 states and 18095 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2024-11-09 05:13:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:25,186 INFO L93 Difference]: Finished difference Result 37522 states and 61073 transitions. [2024-11-09 05:13:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2024-11-09 05:13:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:25,246 INFO L225 Difference]: With dead ends: 37522 [2024-11-09 05:13:25,246 INFO L226 Difference]: Without dead ends: 26651 [2024-11-09 05:13:25,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:25,262 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 1068 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:25,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1412 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26651 states. [2024-11-09 05:13:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26651 to 21673. [2024-11-09 05:13:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21673 states, 21672 states have (on average 1.629983388704319) internal successors, (35325), 21672 states have internal predecessors, (35325), 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) [2024-11-09 05:13:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21673 states to 21673 states and 35325 transitions. [2024-11-09 05:13:26,154 INFO L78 Accepts]: Start accepts. Automaton has 21673 states and 35325 transitions. Word has length 132 [2024-11-09 05:13:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:26,155 INFO L471 AbstractCegarLoop]: Abstraction has 21673 states and 35325 transitions. [2024-11-09 05:13:26,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2024-11-09 05:13:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 21673 states and 35325 transitions. [2024-11-09 05:13:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 05:13:26,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:26,183 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:26,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 05:13:26,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:26,386 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:26,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -538286127, now seen corresponding path program 1 times [2024-11-09 05:13:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024488234] [2024-11-09 05:13:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:26,388 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 [2024-11-09 05:13:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:26,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:26,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:26,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:26,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:26,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:26,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024488234] [2024-11-09 05:13:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024488234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:26,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:26,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:26,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111536764] [2024-11-09 05:13:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:26,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:26,994 INFO L87 Difference]: Start difference. First operand 21673 states and 35325 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-09 05:13:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:27,491 INFO L93 Difference]: Finished difference Result 64138 states and 104421 transitions. [2024-11-09 05:13:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 133 [2024-11-09 05:13:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:27,609 INFO L225 Difference]: With dead ends: 64138 [2024-11-09 05:13:27,609 INFO L226 Difference]: Without dead ends: 42726 [2024-11-09 05:13:27,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:27,649 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 393 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:27,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1419 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42726 states. [2024-11-09 05:13:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42726 to 42724. [2024-11-09 05:13:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42724 states, 42723 states have (on average 1.6150785291295087) internal successors, (69001), 42723 states have internal predecessors, (69001), 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) [2024-11-09 05:13:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42724 states to 42724 states and 69001 transitions. [2024-11-09 05:13:28,746 INFO L78 Accepts]: Start accepts. Automaton has 42724 states and 69001 transitions. Word has length 133 [2024-11-09 05:13:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:28,746 INFO L471 AbstractCegarLoop]: Abstraction has 42724 states and 69001 transitions. [2024-11-09 05:13:28,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-09 05:13:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 42724 states and 69001 transitions. [2024-11-09 05:13:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 05:13:28,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:28,796 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:28,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:28,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:29,000 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:29,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:29,000 INFO L85 PathProgramCache]: Analyzing trace with hash 755552766, now seen corresponding path program 1 times [2024-11-09 05:13:29,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:29,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212873492] [2024-11-09 05:13:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:29,002 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 [2024-11-09 05:13:29,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:29,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:29,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:29,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:13:29,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:29,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:29,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212873492] [2024-11-09 05:13:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212873492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:29,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:29,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:13:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630315774] [2024-11-09 05:13:29,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:29,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:13:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:13:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:29,356 INFO L87 Difference]: Start difference. First operand 42724 states and 69001 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-11-09 05:13:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:30,205 INFO L93 Difference]: Finished difference Result 103456 states and 169331 transitions. [2024-11-09 05:13:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:13:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2024-11-09 05:13:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:30,350 INFO L225 Difference]: With dead ends: 103456 [2024-11-09 05:13:30,350 INFO L226 Difference]: Without dead ends: 71430 [2024-11-09 05:13:30,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:13:30,380 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 146 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:30,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 960 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:13:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71430 states. [2024-11-09 05:13:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71430 to 71060. [2024-11-09 05:13:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71060 states, 71059 states have (on average 1.6225530896860356) internal successors, (115297), 71059 states have internal predecessors, (115297), 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) [2024-11-09 05:13:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71060 states to 71060 states and 115297 transitions. [2024-11-09 05:13:32,048 INFO L78 Accepts]: Start accepts. Automaton has 71060 states and 115297 transitions. Word has length 134 [2024-11-09 05:13:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:32,049 INFO L471 AbstractCegarLoop]: Abstraction has 71060 states and 115297 transitions. [2024-11-09 05:13:32,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-11-09 05:13:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 71060 states and 115297 transitions. [2024-11-09 05:13:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 05:13:32,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:32,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:32,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:32,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:32,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:32,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1793327910, now seen corresponding path program 1 times [2024-11-09 05:13:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152729431] [2024-11-09 05:13:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:32,299 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 [2024-11-09 05:13:32,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:32,302 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:32,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:32,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:32,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:32,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:32,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152729431] [2024-11-09 05:13:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152729431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291156985] [2024-11-09 05:13:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:32,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:32,958 INFO L87 Difference]: Start difference. First operand 71060 states and 115297 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2024-11-09 05:13:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:34,290 INFO L93 Difference]: Finished difference Result 228008 states and 367107 transitions. [2024-11-09 05:13:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2024-11-09 05:13:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:34,564 INFO L225 Difference]: With dead ends: 228008 [2024-11-09 05:13:34,564 INFO L226 Difference]: Without dead ends: 157886 [2024-11-09 05:13:34,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:34,642 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 969 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:34,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1387 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157886 states. [2024-11-09 05:13:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157886 to 140092. [2024-11-09 05:13:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140092 states, 140091 states have (on average 1.610217644245526) internal successors, (225577), 140091 states have internal predecessors, (225577), 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) [2024-11-09 05:13:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140092 states to 140092 states and 225577 transitions. [2024-11-09 05:13:37,702 INFO L78 Accepts]: Start accepts. Automaton has 140092 states and 225577 transitions. Word has length 137 [2024-11-09 05:13:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:37,703 INFO L471 AbstractCegarLoop]: Abstraction has 140092 states and 225577 transitions. [2024-11-09 05:13:37,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2024-11-09 05:13:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 140092 states and 225577 transitions. [2024-11-09 05:13:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 05:13:38,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:38,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:38,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:38,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:38,449 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:38,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 918185525, now seen corresponding path program 1 times [2024-11-09 05:13:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80075225] [2024-11-09 05:13:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:38,450 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 [2024-11-09 05:13:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:38,451 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:38,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:38,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:38,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:38,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:38,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80075225] [2024-11-09 05:13:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80075225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:38,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373072207] [2024-11-09 05:13:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:38,966 INFO L87 Difference]: Start difference. First operand 140092 states and 225577 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-09 05:13:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:41,250 INFO L93 Difference]: Finished difference Result 450822 states and 720253 transitions. [2024-11-09 05:13:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2024-11-09 05:13:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:41,729 INFO L225 Difference]: With dead ends: 450822 [2024-11-09 05:13:41,729 INFO L226 Difference]: Without dead ends: 311954 [2024-11-09 05:13:41,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:41,848 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 998 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:41,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1414 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311954 states. [2024-11-09 05:13:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311954 to 276752. [2024-11-09 05:13:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276752 states, 276751 states have (on average 1.597013199590968) internal successors, (441975), 276751 states have internal predecessors, (441975), 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) [2024-11-09 05:13:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276752 states to 276752 states and 441975 transitions. [2024-11-09 05:13:48,272 INFO L78 Accepts]: Start accepts. Automaton has 276752 states and 441975 transitions. Word has length 138 [2024-11-09 05:13:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:13:48,273 INFO L471 AbstractCegarLoop]: Abstraction has 276752 states and 441975 transitions. [2024-11-09 05:13:48,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-09 05:13:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 276752 states and 441975 transitions. [2024-11-09 05:13:48,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 05:13:48,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:13:48,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:13:48,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:48,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:13:48,600 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:13:48,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:13:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -53957344, now seen corresponding path program 1 times [2024-11-09 05:13:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:13:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195617167] [2024-11-09 05:13:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:13:48,601 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 [2024-11-09 05:13:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:13:48,604 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:13:48,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf6c9fb-fbb8-4026-87d8-23a6f1ac1584/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 05:13:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:13:48,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:13:48,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:13:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:13:49,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:13:49,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:13:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195617167] [2024-11-09 05:13:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195617167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:13:49,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:13:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:13:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060530499] [2024-11-09 05:13:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:13:49,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:13:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:13:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:13:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:13:49,261 INFO L87 Difference]: Start difference. First operand 276752 states and 441975 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-09 05:13:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:13:53,504 INFO L93 Difference]: Finished difference Result 820314 states and 1307983 transitions. [2024-11-09 05:13:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:13:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 139 [2024-11-09 05:13:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:13:54,847 INFO L225 Difference]: With dead ends: 820314 [2024-11-09 05:13:54,847 INFO L226 Difference]: Without dead ends: 545744 [2024-11-09 05:13:55,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:13:55,041 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 415 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:13:55,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1416 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:13:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545744 states.