./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/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_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/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_bb54d687-5a89-4724-a863-df4bc0d8866b/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 a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:54:12,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:54:13,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:54:13,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:54:13,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:54:13,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:54:13,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:54:13,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:54:13,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:54:13,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:54:13,086 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:54:13,087 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:54:13,087 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:54:13,092 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:54:13,093 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:54:13,093 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:54:13,093 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:54:13,094 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:54:13,094 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:54:13,094 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:54:13,095 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:54:13,097 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:54:13,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:54:13,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:54:13,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:54:13,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:54:13,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:54:13,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:54:13,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:54:13,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:54:13,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:54:13,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:54:13,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:54:13,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:54:13,102 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:54:13,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:54:13,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:54:13,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:54:13,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:13,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:54:13,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:54:13,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:54:13,104 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:54:13,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:54:13,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:54:13,105 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:54:13,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:54:13,106 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_bb54d687-5a89-4724-a863-df4bc0d8866b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 [2024-11-09 04:54:13,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:54:13,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:54:13,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:54:13,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:54:13,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:54:13,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c Unable to find full path for "g++" [2024-11-09 04:54:15,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:54:15,772 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:54:15,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2024-11-09 04:54:15,787 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/data/7658db608/759512d2089f4121a1df92a97fd81fae/FLAGae2fdc226 [2024-11-09 04:54:15,814 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/data/7658db608/759512d2089f4121a1df92a97fd81fae [2024-11-09 04:54:15,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:54:15,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:54:15,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:15,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:54:15,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:54:15,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:15" (1/1) ... [2024-11-09 04:54:15,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68633257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:15, skipping insertion in model container [2024-11-09 04:54:15,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:54:15" (1/1) ... [2024-11-09 04:54:15,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:54:16,227 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_bb54d687-5a89-4724-a863-df4bc0d8866b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2024-11-09 04:54:16,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:16,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:54:16,313 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_bb54d687-5a89-4724-a863-df4bc0d8866b/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2024-11-09 04:54:16,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:54:16,352 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:54:16,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16 WrapperNode [2024-11-09 04:54:16,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:54:16,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:16,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:54:16,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:54:16,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,422 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 651 [2024-11-09 04:54:16,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:54:16,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:54:16,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:54:16,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:54:16,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:54:16,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:54:16,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:54:16,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:54:16,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (1/1) ... [2024-11-09 04:54:16,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:54:16,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:16,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:54:16,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:54:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:54:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:54:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:54:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:54:16,748 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:54:16,751 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:54:16,772 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 04:54:17,789 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2024-11-09 04:54:17,790 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2024-11-09 04:54:17,868 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-09 04:54:17,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:54:18,276 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:54:18,277 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:54:18,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:18 BoogieIcfgContainer [2024-11-09 04:54:18,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:54:18,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:54:18,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:54:18,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:54:18,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:54:15" (1/3) ... [2024-11-09 04:54:18,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31404b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:18, skipping insertion in model container [2024-11-09 04:54:18,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:54:16" (2/3) ... [2024-11-09 04:54:18,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31404b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:54:18, skipping insertion in model container [2024-11-09 04:54:18,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:54:18" (3/3) ... [2024-11-09 04:54:18,294 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2024-11-09 04:54:18,322 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:54:18,322 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:54:18,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:54:18,435 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;@612fb57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:54:18,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:54:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 04:54:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 04:54:18,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:18,456 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] [2024-11-09 04:54:18,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:18,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:18,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1455405061, now seen corresponding path program 1 times [2024-11-09 04:54:18,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13759734] [2024-11-09 04:54:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:18,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:18,902 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 04:54:18,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13759734] [2024-11-09 04:54:18,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13759734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:18,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:18,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:54:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984909455] [2024-11-09 04:54:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:18,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:18,957 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 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 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 04:54:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:19,284 INFO L93 Difference]: Finished difference Result 215 states and 374 transitions. [2024-11-09 04:54:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2024-11-09 04:54:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:19,304 INFO L225 Difference]: With dead ends: 215 [2024-11-09 04:54:19,304 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 04:54:19,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:54:19,316 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:19,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 199 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:54:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 04:54:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-09 04:54:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 104 states have internal predecessors, (150), 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 04:54:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2024-11-09 04:54:19,382 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 39 [2024-11-09 04:54:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:19,384 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2024-11-09 04:54:19,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 04:54:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2024-11-09 04:54:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 04:54:19,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:19,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:19,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:54:19,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:19,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -22422416, now seen corresponding path program 1 times [2024-11-09 04:54:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:19,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568675869] [2024-11-09 04:54:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:19,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568675869] [2024-11-09 04:54:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568675869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:19,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:19,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861657651] [2024-11-09 04:54:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:19,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:19,609 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 04:54:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:19,858 INFO L93 Difference]: Finished difference Result 217 states and 317 transitions. [2024-11-09 04:54:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:19,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2024-11-09 04:54:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:19,861 INFO L225 Difference]: With dead ends: 217 [2024-11-09 04:54:19,861 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 04:54:19,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:19,863 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:19,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 162 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 04:54:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-09 04:54:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3983739837398375) internal successors, (172), 123 states have internal predecessors, (172), 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 04:54:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2024-11-09 04:54:19,882 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 53 [2024-11-09 04:54:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:19,883 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2024-11-09 04:54:19,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 04:54:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2024-11-09 04:54:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 04:54:19,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:19,886 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:19,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:54:19,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:19,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1354503604, now seen corresponding path program 1 times [2024-11-09 04:54:19,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107910248] [2024-11-09 04:54:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 04:54:20,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107910248] [2024-11-09 04:54:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107910248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:54:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131556117] [2024-11-09 04:54:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:20,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:54:20,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:54:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:54:20,110 INFO L87 Difference]: Start difference. First operand 124 states and 172 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 04:54:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:20,451 INFO L93 Difference]: Finished difference Result 274 states and 399 transitions. [2024-11-09 04:54:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:54:20,453 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 70 [2024-11-09 04:54:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:20,456 INFO L225 Difference]: With dead ends: 274 [2024-11-09 04:54:20,456 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 04:54:20,457 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 04:54:20,462 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:20,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:54:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 04:54:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-09 04:54:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.329192546583851) internal successors, (214), 161 states have internal predecessors, (214), 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 04:54:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2024-11-09 04:54:20,483 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 70 [2024-11-09 04:54:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:20,484 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2024-11-09 04:54:20,484 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 04:54:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2024-11-09 04:54:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 04:54:20,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:20,488 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:20,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:54:20,488 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:20,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1888691859, now seen corresponding path program 1 times [2024-11-09 04:54:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670354050] [2024-11-09 04:54:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 04:54:20,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670354050] [2024-11-09 04:54:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670354050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:20,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807002598] [2024-11-09 04:54:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:20,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:20,667 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 04:54:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:20,897 INFO L93 Difference]: Finished difference Result 335 states and 453 transitions. [2024-11-09 04:54:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 90 [2024-11-09 04:54:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:20,900 INFO L225 Difference]: With dead ends: 335 [2024-11-09 04:54:20,904 INFO L226 Difference]: Without dead ends: 185 [2024-11-09 04:54:20,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:20,906 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:20,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-09 04:54:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-09 04:54:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.3043478260869565) internal successors, (240), 184 states have internal predecessors, (240), 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 04:54:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 240 transitions. [2024-11-09 04:54:20,929 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 240 transitions. Word has length 90 [2024-11-09 04:54:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:20,929 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 240 transitions. [2024-11-09 04:54:20,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 04:54:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 240 transitions. [2024-11-09 04:54:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 04:54:20,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:20,938 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:20,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:54:20,938 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:20,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1357310325, now seen corresponding path program 1 times [2024-11-09 04:54:20,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:20,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556227919] [2024-11-09 04:54:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:20,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:21,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556227919] [2024-11-09 04:54:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556227919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317416120] [2024-11-09 04:54:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:21,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:21,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:54:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:21,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:54:21,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:22,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 04:54:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317416120] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:54:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2024-11-09 04:54:22,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929214266] [2024-11-09 04:54:22,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:22,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:54:22,314 INFO L87 Difference]: Start difference. First operand 185 states and 240 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 04:54:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:22,409 INFO L93 Difference]: Finished difference Result 357 states and 467 transitions. [2024-11-09 04:54:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 108 [2024-11-09 04:54:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:22,412 INFO L225 Difference]: With dead ends: 357 [2024-11-09 04:54:22,412 INFO L226 Difference]: Without dead ends: 355 [2024-11-09 04:54:22,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:54:22,414 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:22,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 238 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:54:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-09 04:54:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2024-11-09 04:54:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.3144475920679888) internal successors, (464), 353 states have internal predecessors, (464), 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 04:54:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 464 transitions. [2024-11-09 04:54:22,432 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 464 transitions. Word has length 108 [2024-11-09 04:54:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:22,433 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 464 transitions. [2024-11-09 04:54:22,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 04:54:22,433 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 464 transitions. [2024-11-09 04:54:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-09 04:54:22,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:22,436 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 04:54:22,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:54:22,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:22,638 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:22,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1650256732, now seen corresponding path program 1 times [2024-11-09 04:54:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:22,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437545025] [2024-11-09 04:54:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:22,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 04:54:22,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437545025] [2024-11-09 04:54:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437545025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:22,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:22,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:22,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846911964] [2024-11-09 04:54:22,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:22,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:22,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:22,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:22,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:22,815 INFO L87 Difference]: Start difference. First operand 354 states and 464 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 04:54:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:23,103 INFO L93 Difference]: Finished difference Result 778 states and 1060 transitions. [2024-11-09 04:54:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 142 [2024-11-09 04:54:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:23,107 INFO L225 Difference]: With dead ends: 778 [2024-11-09 04:54:23,107 INFO L226 Difference]: Without dead ends: 436 [2024-11-09 04:54:23,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:23,109 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:23,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 168 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:54:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-09 04:54:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2024-11-09 04:54:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.271461716937355) internal successors, (548), 431 states have internal predecessors, (548), 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 04:54:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 548 transitions. [2024-11-09 04:54:23,132 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 548 transitions. Word has length 142 [2024-11-09 04:54:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:23,132 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 548 transitions. [2024-11-09 04:54:23,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 04:54:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 548 transitions. [2024-11-09 04:54:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-09 04:54:23,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:23,138 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:23,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:54:23,138 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:23,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1433328816, now seen corresponding path program 1 times [2024-11-09 04:54:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:23,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640506209] [2024-11-09 04:54:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 04:54:23,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640506209] [2024-11-09 04:54:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640506209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736101357] [2024-11-09 04:54:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:23,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:23,310 INFO L87 Difference]: Start difference. First operand 432 states and 548 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 04:54:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:23,535 INFO L93 Difference]: Finished difference Result 902 states and 1166 transitions. [2024-11-09 04:54:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:23,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 148 [2024-11-09 04:54:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:23,539 INFO L225 Difference]: With dead ends: 902 [2024-11-09 04:54:23,539 INFO L226 Difference]: Without dead ends: 482 [2024-11-09 04:54:23,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:23,541 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:23,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-09 04:54:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2024-11-09 04:54:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.2557172557172558) internal successors, (604), 481 states have internal predecessors, (604), 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 04:54:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 604 transitions. [2024-11-09 04:54:23,562 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 604 transitions. Word has length 148 [2024-11-09 04:54:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:23,564 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 604 transitions. [2024-11-09 04:54:23,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 04:54:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 604 transitions. [2024-11-09 04:54:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-09 04:54:23,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:23,567 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:23,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 04:54:23,568 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:23,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash 610569376, now seen corresponding path program 1 times [2024-11-09 04:54:23,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:23,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183900584] [2024-11-09 04:54:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:23,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-09 04:54:23,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183900584] [2024-11-09 04:54:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183900584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:23,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:23,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56981160] [2024-11-09 04:54:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:23,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:23,707 INFO L87 Difference]: Start difference. First operand 482 states and 604 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 04:54:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:23,949 INFO L93 Difference]: Finished difference Result 1006 states and 1286 transitions. [2024-11-09 04:54:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 170 [2024-11-09 04:54:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:23,953 INFO L225 Difference]: With dead ends: 1006 [2024-11-09 04:54:23,953 INFO L226 Difference]: Without dead ends: 536 [2024-11-09 04:54:23,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:23,956 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:23,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-09 04:54:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2024-11-09 04:54:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.2411214953271028) internal successors, (664), 535 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 04:54:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 664 transitions. [2024-11-09 04:54:23,978 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 664 transitions. Word has length 170 [2024-11-09 04:54:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:23,978 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 664 transitions. [2024-11-09 04:54:23,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 04:54:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 664 transitions. [2024-11-09 04:54:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 04:54:23,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:23,983 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:23,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:54:23,984 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:23,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1493368355, now seen corresponding path program 1 times [2024-11-09 04:54:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:23,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669381646] [2024-11-09 04:54:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:23,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 04:54:24,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669381646] [2024-11-09 04:54:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669381646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:24,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:54:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125214134] [2024-11-09 04:54:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:24,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:54:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:54:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:54:24,126 INFO L87 Difference]: Start difference. First operand 536 states and 664 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 04:54:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:24,369 INFO L93 Difference]: Finished difference Result 1118 states and 1414 transitions. [2024-11-09 04:54:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:54:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 175 [2024-11-09 04:54:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:24,373 INFO L225 Difference]: With dead ends: 1118 [2024-11-09 04:54:24,373 INFO L226 Difference]: Without dead ends: 594 [2024-11-09 04:54:24,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:54:24,375 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:24,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:54:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-09 04:54:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-11-09 04:54:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.2276559865092749) internal successors, (728), 593 states have internal predecessors, (728), 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 04:54:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 728 transitions. [2024-11-09 04:54:24,392 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 728 transitions. Word has length 175 [2024-11-09 04:54:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:24,393 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 728 transitions. [2024-11-09 04:54:24,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 04:54:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 728 transitions. [2024-11-09 04:54:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-09 04:54:24,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:24,397 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:24,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 04:54:24,397 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:24,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1923469141, now seen corresponding path program 1 times [2024-11-09 04:54:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098042754] [2024-11-09 04:54:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 303 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-09 04:54:24,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098042754] [2024-11-09 04:54:24,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098042754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346402799] [2024-11-09 04:54:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:24,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:24,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:24,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:54:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:24,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:54:24,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-09 04:54:25,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346402799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:25,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:54:25,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 04:54:25,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263331141] [2024-11-09 04:54:25,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:25,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:54:25,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:54:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:54:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:54:25,119 INFO L87 Difference]: Start difference. First operand 594 states and 728 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 04:54:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:25,460 INFO L93 Difference]: Finished difference Result 1296 states and 1655 transitions. [2024-11-09 04:54:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:54:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 202 [2024-11-09 04:54:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:25,464 INFO L225 Difference]: With dead ends: 1296 [2024-11-09 04:54:25,464 INFO L226 Difference]: Without dead ends: 632 [2024-11-09 04:54:25,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:54:25,466 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 53 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:25,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 182 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:54:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-09 04:54:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 615. [2024-11-09 04:54:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.221498371335505) internal successors, (750), 614 states have internal predecessors, (750), 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 04:54:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 750 transitions. [2024-11-09 04:54:25,486 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 750 transitions. Word has length 202 [2024-11-09 04:54:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:25,486 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 750 transitions. [2024-11-09 04:54:25,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 04:54:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 750 transitions. [2024-11-09 04:54:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-09 04:54:25,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:25,491 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 04:54:25,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:25,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 04:54:25,696 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:25,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1908260798, now seen corresponding path program 1 times [2024-11-09 04:54:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:54:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170985525] [2024-11-09 04:54:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:54:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 04:54:25,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:54:25,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170985525] [2024-11-09 04:54:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170985525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:25,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891811653] [2024-11-09 04:54:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:25,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:25,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:54:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:26,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:54:26,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 04:54:26,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 04:54:26,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891811653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:26,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [985076946] [2024-11-09 04:54:26,448 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-09 04:54:26,448 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:54:26,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:54:26,458 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:54:26,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:55:49,661 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:56:44,543 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13184#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (= |ULTIMATE.start_ssl3_accept_~got_new_session~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)))' at error location [2024-11-09 04:56:44,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:56:44,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:56:44,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 04:56:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682499956] [2024-11-09 04:56:44,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:56:44,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:56:44,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:56:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:56:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=742, Invalid=3814, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 04:56:44,550 INFO L87 Difference]: Start difference. First operand 615 states and 750 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 04:56:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:45,222 INFO L93 Difference]: Finished difference Result 2149 states and 2794 transitions. [2024-11-09 04:56:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:56:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 240 [2024-11-09 04:56:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:45,229 INFO L225 Difference]: With dead ends: 2149 [2024-11-09 04:56:45,230 INFO L226 Difference]: Without dead ends: 1478 [2024-11-09 04:56:45,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=754, Invalid=4076, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 04:56:45,233 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 386 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:45,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 336 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:56:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2024-11-09 04:56:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1025. [2024-11-09 04:56:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 1.359375) internal successors, (1392), 1024 states have internal predecessors, (1392), 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 04:56:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1392 transitions. [2024-11-09 04:56:45,274 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1392 transitions. Word has length 240 [2024-11-09 04:56:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:45,275 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1392 transitions. [2024-11-09 04:56:45,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 04:56:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1392 transitions. [2024-11-09 04:56:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-09 04:56:45,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:45,280 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:45,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:45,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 04:56:45,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:45,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:45,482 INFO L85 PathProgramCache]: Analyzing trace with hash 605623729, now seen corresponding path program 1 times [2024-11-09 04:56:45,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:56:45,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515718791] [2024-11-09 04:56:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:45,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:56:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 368 proven. 125 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 04:56:45,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:56:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515718791] [2024-11-09 04:56:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515718791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:56:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905502491] [2024-11-09 04:56:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:45,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:45,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:45,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:56:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:45,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:56:45,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 317 proven. 176 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 04:56:46,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 368 proven. 125 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 04:56:46,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905502491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [634744369] [2024-11-09 04:56:46,822 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2024-11-09 04:56:46,822 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:56:46,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:56:46,823 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:56:46,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:57:03,169 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:57:53,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17994#(and (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_ssl3_accept_~skip~0#1| 0) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___6~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__reuse_message~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___10~0#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__hit~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___4~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__verify_mode~0#1|)) (<= |ULTIMATE.start_ssl3_accept_~tmp___9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___3~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__session__peer~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algo_strength~0#1|)) (= |ULTIMATE.start_ssl3_accept_~got_new_session~0#1| 1) (<= |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~s__debug~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__options~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~tmp___5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~tmp___8~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0#1| 2147483648)) (<= |ULTIMATE.start_ssl3_accept_~s__cert__pkeys__AT0__privatekey~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~num1~0#1| 2147483647) (<= |ULTIMATE.start_ssl3_accept_~ret~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_ssl3_accept_~s__version~0#1| 2147483648)))' at error location [2024-11-09 04:57:53,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:57:53,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:57:53,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 04:57:53,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403012868] [2024-11-09 04:57:53,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:57:53,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:57:53,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:53,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:57:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=2456, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 04:57:53,858 INFO L87 Difference]: Start difference. First operand 1025 states and 1392 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 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 04:57:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:55,128 INFO L93 Difference]: Finished difference Result 3108 states and 4299 transitions. [2024-11-09 04:57:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:57:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 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 246 [2024-11-09 04:57:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:55,138 INFO L225 Difference]: With dead ends: 3108 [2024-11-09 04:57:55,138 INFO L226 Difference]: Without dead ends: 1476 [2024-11-09 04:57:55,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=642, Invalid=2780, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 04:57:55,146 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 225 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:55,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 612 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:57:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2024-11-09 04:57:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1312. [2024-11-09 04:57:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 1.3562166285278414) internal successors, (1778), 1311 states have internal predecessors, (1778), 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 04:57:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1778 transitions. [2024-11-09 04:57:55,208 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1778 transitions. Word has length 246 [2024-11-09 04:57:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:55,208 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 1778 transitions. [2024-11-09 04:57:55,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 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 04:57:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1778 transitions. [2024-11-09 04:57:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-09 04:57:55,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:55,214 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 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] [2024-11-09 04:57:55,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:55,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 04:57:55,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:55,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1826759467, now seen corresponding path program 1 times [2024-11-09 04:57:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316729801] [2024-11-09 04:57:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-11-09 04:57:55,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316729801] [2024-11-09 04:57:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316729801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:55,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:57:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:57:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462989810] [2024-11-09 04:57:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:55,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:57:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:57:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:57:55,556 INFO L87 Difference]: Start difference. First operand 1312 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 04:57:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:55,802 INFO L93 Difference]: Finished difference Result 2772 states and 3814 transitions. [2024-11-09 04:57:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:57:55,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 302 [2024-11-09 04:57:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:55,809 INFO L225 Difference]: With dead ends: 2772 [2024-11-09 04:57:55,809 INFO L226 Difference]: Without dead ends: 1472 [2024-11-09 04:57:55,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:57:55,812 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:55,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 171 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:57:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-11-09 04:57:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2024-11-09 04:57:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 1.327668252889191) internal successors, (1953), 1471 states have internal predecessors, (1953), 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 04:57:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1953 transitions. [2024-11-09 04:57:55,857 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1953 transitions. Word has length 302 [2024-11-09 04:57:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:55,858 INFO L471 AbstractCegarLoop]: Abstraction has 1472 states and 1953 transitions. [2024-11-09 04:57:55,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 04:57:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1953 transitions. [2024-11-09 04:57:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-09 04:57:55,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:55,865 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 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] [2024-11-09 04:57:55,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 04:57:55,866 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:55,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 881580883, now seen corresponding path program 1 times [2024-11-09 04:57:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:55,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207529641] [2024-11-09 04:57:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 04:57:56,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207529641] [2024-11-09 04:57:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207529641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:57:56,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707094186] [2024-11-09 04:57:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:56,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:56,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:57:56,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb54d687-5a89-4724-a863-df4bc0d8866b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:57:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:56,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:57:56,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-09 04:57:57,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2024-11-09 04:57:58,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707094186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:58,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [484485724] [2024-11-09 04:57:58,717 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2024-11-09 04:57:58,717 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:57:58,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:57:58,717 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:57:58,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs