./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:38:50,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:38:50,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:38:50,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:38:50,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:38:50,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:38:50,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:38:50,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:38:50,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:38:50,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:38:50,396 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:38:50,396 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:38:50,397 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:38:50,397 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:38:50,397 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:38:50,397 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:38:50,397 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:38:50,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:38:50,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:38:50,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:38:50,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:38:50,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:38:50,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:38:50,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:38:50,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:38:50,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:38:50,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:38:50,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:38:50,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:38:50,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:38:50,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:38:50,401 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b [2024-11-14 04:38:50,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:38:50,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:38:50,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:38:50,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:38:50,706 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:38:50,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c Unable to find full path for "g++" [2024-11-14 04:38:52,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:38:53,547 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:38:53,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2024-11-14 04:38:53,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/data/9c8c1e8b2/55a97f713b77463eb12b8700240bb907/FLAG2366ea6cb [2024-11-14 04:38:53,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/data/9c8c1e8b2/55a97f713b77463eb12b8700240bb907 [2024-11-14 04:38:53,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:38:53,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:38:53,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:38:53,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:38:53,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:38:53,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:38:53" (1/1) ... [2024-11-14 04:38:53,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746c2bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:53, skipping insertion in model container [2024-11-14 04:38:53,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:38:53" (1/1) ... [2024-11-14 04:38:53,831 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:38:54,306 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2024-11-14 04:38:54,371 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2024-11-14 04:38:54,423 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2024-11-14 04:38:54,467 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2024-11-14 04:38:54,572 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2024-11-14 04:38:54,709 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2024-11-14 04:38:55,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:38:55,103 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:38:55,156 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2024-11-14 04:38:55,183 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2024-11-14 04:38:55,230 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2024-11-14 04:38:55,263 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2024-11-14 04:38:55,326 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2024-11-14 04:38:55,409 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_e974a27e-17c0-43c7-bfc2-8514c5d3496a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2024-11-14 04:38:55,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:38:55,651 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:38:55,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55 WrapperNode [2024-11-14 04:38:55,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:38:55,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:38:55,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:38:55,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:38:55,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:55,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:55,938 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6424 [2024-11-14 04:38:55,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:38:55,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:38:55,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:38:55,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:38:55,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:55,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:55,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:55,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:38:56,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:38:56,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:38:56,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:38:56,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (1/1) ... [2024-11-14 04:38:56,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:38:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:38:56,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:38:56,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:38:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:38:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:38:56,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:38:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:38:56,788 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:38:56,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:39:02,275 INFO L? ?]: Removed 1251 outVars from TransFormulas that were not future-live. [2024-11-14 04:39:02,276 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:39:03,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:39:03,018 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:39:03,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:39:03 BoogieIcfgContainer [2024-11-14 04:39:03,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:39:03,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:39:03,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:39:03,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:39:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:38:53" (1/3) ... [2024-11-14 04:39:03,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe1c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:39:03, skipping insertion in model container [2024-11-14 04:39:03,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:38:55" (2/3) ... [2024-11-14 04:39:03,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fe1c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:39:03, skipping insertion in model container [2024-11-14 04:39:03,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:39:03" (3/3) ... [2024-11-14 04:39:03,049 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2024-11-14 04:39:03,095 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:39:03,103 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c that has 1 procedures, 1234 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-14 04:39:03,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:39:03,378 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;@815a824, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:39:03,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-14 04:39:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:39:03,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:03,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:03,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:03,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2092473724, now seen corresponding path program 1 times [2024-11-14 04:39:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752393533] [2024-11-14 04:39:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:04,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752393533] [2024-11-14 04:39:04,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752393533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:39:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947949063] [2024-11-14 04:39:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:04,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:39:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:39:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:39:04,353 INFO L87 Difference]: Start difference. First operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 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 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:06,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:06,975 INFO L93 Difference]: Finished difference Result 2365 states and 4064 transitions. [2024-11-14 04:39:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:39:06,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2024-11-14 04:39:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:07,013 INFO L225 Difference]: With dead ends: 2365 [2024-11-14 04:39:07,015 INFO L226 Difference]: Without dead ends: 1494 [2024-11-14 04:39:07,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:39:07,036 INFO L432 NwaCegarLoop]: 999 mSDtfsCounter, 6657 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6657 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:07,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6657 Valid, 1450 Invalid, 1193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 04:39:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2024-11-14 04:39:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1488. [2024-11-14 04:39:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1482 states have (on average 1.2793522267206479) internal successors, (1896), 1487 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1896 transitions. [2024-11-14 04:39:07,206 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1896 transitions. Word has length 51 [2024-11-14 04:39:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:07,207 INFO L471 AbstractCegarLoop]: Abstraction has 1488 states and 1896 transitions. [2024-11-14 04:39:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1896 transitions. [2024-11-14 04:39:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:39:07,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:07,214 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:07,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:39:07,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:07,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1158227955, now seen corresponding path program 1 times [2024-11-14 04:39:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633508851] [2024-11-14 04:39:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:07,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:07,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633508851] [2024-11-14 04:39:07,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633508851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:07,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:39:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404358739] [2024-11-14 04:39:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:07,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:39:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:39:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:39:07,599 INFO L87 Difference]: Start difference. First operand 1488 states and 1896 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-14 04:39:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:09,193 INFO L93 Difference]: Finished difference Result 2955 states and 3772 transitions. [2024-11-14 04:39:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:39:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 52 [2024-11-14 04:39:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:09,205 INFO L225 Difference]: With dead ends: 2955 [2024-11-14 04:39:09,205 INFO L226 Difference]: Without dead ends: 2037 [2024-11-14 04:39:09,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:39:09,209 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 4522 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:09,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4522 Valid, 911 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:39:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2024-11-14 04:39:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2023. [2024-11-14 04:39:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2017 states have (on average 1.281110560237977) internal successors, (2584), 2022 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2584 transitions. [2024-11-14 04:39:09,290 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2584 transitions. Word has length 52 [2024-11-14 04:39:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:09,291 INFO L471 AbstractCegarLoop]: Abstraction has 2023 states and 2584 transitions. [2024-11-14 04:39:09,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-14 04:39:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2584 transitions. [2024-11-14 04:39:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:39:09,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:09,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:09,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:39:09,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:09,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1808254749, now seen corresponding path program 1 times [2024-11-14 04:39:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:09,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294107952] [2024-11-14 04:39:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:09,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294107952] [2024-11-14 04:39:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294107952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:09,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:39:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439127507] [2024-11-14 04:39:09,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:09,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:39:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:39:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:39:09,612 INFO L87 Difference]: Start difference. First operand 2023 states and 2584 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-14 04:39:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:11,145 INFO L93 Difference]: Finished difference Result 4066 states and 5224 transitions. [2024-11-14 04:39:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:39:11,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 52 [2024-11-14 04:39:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:11,158 INFO L225 Difference]: With dead ends: 4066 [2024-11-14 04:39:11,159 INFO L226 Difference]: Without dead ends: 2767 [2024-11-14 04:39:11,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:39:11,162 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 4000 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:11,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4000 Valid, 814 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 04:39:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2024-11-14 04:39:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2757. [2024-11-14 04:39:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2751726644856416) internal successors, (3508), 2756 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3508 transitions. [2024-11-14 04:39:11,255 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3508 transitions. Word has length 52 [2024-11-14 04:39:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:11,256 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 3508 transitions. [2024-11-14 04:39:11,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2024-11-14 04:39:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3508 transitions. [2024-11-14 04:39:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:39:11,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:11,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:11,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:39:11,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:11,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash 77244356, now seen corresponding path program 1 times [2024-11-14 04:39:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117373550] [2024-11-14 04:39:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:12,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:12,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117373550] [2024-11-14 04:39:12,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117373550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:12,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:12,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:39:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949366680] [2024-11-14 04:39:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:12,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:39:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:39:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:39:12,097 INFO L87 Difference]: Start difference. First operand 2757 states and 3508 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:14,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:14,553 INFO L93 Difference]: Finished difference Result 3848 states and 4942 transitions. [2024-11-14 04:39:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:39:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 04:39:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:14,571 INFO L225 Difference]: With dead ends: 3848 [2024-11-14 04:39:14,572 INFO L226 Difference]: Without dead ends: 3320 [2024-11-14 04:39:14,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:39:14,578 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 3116 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:14,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3116 Valid, 2483 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 04:39:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2024-11-14 04:39:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2757. [2024-11-14 04:39:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2748091603053435) internal successors, (3507), 2756 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3507 transitions. [2024-11-14 04:39:14,694 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3507 transitions. Word has length 54 [2024-11-14 04:39:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:14,695 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 3507 transitions. [2024-11-14 04:39:14,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3507 transitions. [2024-11-14 04:39:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:39:14,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:14,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:14,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:39:14,701 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:14,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1063699171, now seen corresponding path program 1 times [2024-11-14 04:39:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:14,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135395977] [2024-11-14 04:39:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:15,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:15,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135395977] [2024-11-14 04:39:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135395977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:15,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:15,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:39:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759733043] [2024-11-14 04:39:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:15,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:39:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:39:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:39:15,602 INFO L87 Difference]: Start difference. First operand 2757 states and 3507 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:19,281 INFO L93 Difference]: Finished difference Result 4572 states and 5876 transitions. [2024-11-14 04:39:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:39:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 04:39:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:19,298 INFO L225 Difference]: With dead ends: 4572 [2024-11-14 04:39:19,298 INFO L226 Difference]: Without dead ends: 4166 [2024-11-14 04:39:19,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:39:19,302 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 3428 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:19,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 3507 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 04:39:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2024-11-14 04:39:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 2757. [2024-11-14 04:39:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2744456561250455) internal successors, (3506), 2756 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3506 transitions. [2024-11-14 04:39:19,413 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3506 transitions. Word has length 54 [2024-11-14 04:39:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:19,414 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 3506 transitions. [2024-11-14 04:39:19,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3506 transitions. [2024-11-14 04:39:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:39:19,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:19,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:19,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:39:19,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:19,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1340474756, now seen corresponding path program 1 times [2024-11-14 04:39:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:19,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052313941] [2024-11-14 04:39:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:19,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052313941] [2024-11-14 04:39:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052313941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:19,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:19,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:39:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205419460] [2024-11-14 04:39:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:19,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:39:19,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:39:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:39:19,947 INFO L87 Difference]: Start difference. First operand 2757 states and 3506 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:22,007 INFO L93 Difference]: Finished difference Result 3392 states and 4296 transitions. [2024-11-14 04:39:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:39:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 04:39:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:22,019 INFO L225 Difference]: With dead ends: 3392 [2024-11-14 04:39:22,019 INFO L226 Difference]: Without dead ends: 3386 [2024-11-14 04:39:22,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:39:22,022 INFO L432 NwaCegarLoop]: 584 mSDtfsCounter, 4084 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:22,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 2485 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 04:39:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-14 04:39:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2757. [2024-11-14 04:39:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2740821519447474) internal successors, (3505), 2756 states have internal predecessors, (3505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3505 transitions. [2024-11-14 04:39:22,116 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3505 transitions. Word has length 54 [2024-11-14 04:39:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:22,117 INFO L471 AbstractCegarLoop]: Abstraction has 2757 states and 3505 transitions. [2024-11-14 04:39:22,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3505 transitions. [2024-11-14 04:39:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:39:22,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:22,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:22,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:39:22,121 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:22,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1906140159, now seen corresponding path program 1 times [2024-11-14 04:39:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246639480] [2024-11-14 04:39:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:22,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:22,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246639480] [2024-11-14 04:39:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246639480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:22,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654029557] [2024-11-14 04:39:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:22,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:22,244 INFO L87 Difference]: Start difference. First operand 2757 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:22,370 INFO L93 Difference]: Finished difference Result 3421 states and 4438 transitions. [2024-11-14 04:39:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:22,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-14 04:39:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:22,380 INFO L225 Difference]: With dead ends: 3421 [2024-11-14 04:39:22,380 INFO L226 Difference]: Without dead ends: 2678 [2024-11-14 04:39:22,382 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 [2024-11-14 04:39:22,382 INFO L432 NwaCegarLoop]: 1055 mSDtfsCounter, 498 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:22,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1613 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2024-11-14 04:39:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2676. [2024-11-14 04:39:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2670 states have (on average 1.2775280898876404) internal successors, (3411), 2675 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3411 transitions. [2024-11-14 04:39:22,488 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3411 transitions. Word has length 55 [2024-11-14 04:39:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:22,489 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 3411 transitions. [2024-11-14 04:39:22,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3411 transitions. [2024-11-14 04:39:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:39:22,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:22,494 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:39:22,494 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:22,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1049277419, now seen corresponding path program 1 times [2024-11-14 04:39:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909462315] [2024-11-14 04:39:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:22,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909462315] [2024-11-14 04:39:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909462315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:22,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504775003] [2024-11-14 04:39:22,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:22,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:22,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:22,631 INFO L87 Difference]: Start difference. First operand 2676 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:22,757 INFO L93 Difference]: Finished difference Result 3806 states and 5002 transitions. [2024-11-14 04:39:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-14 04:39:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:22,767 INFO L225 Difference]: With dead ends: 3806 [2024-11-14 04:39:22,767 INFO L226 Difference]: Without dead ends: 2874 [2024-11-14 04:39:22,769 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 [2024-11-14 04:39:22,769 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 511 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:22,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1555 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2024-11-14 04:39:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2872. [2024-11-14 04:39:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2866 states have (on average 1.2951849267271458) internal successors, (3712), 2871 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3712 transitions. [2024-11-14 04:39:22,829 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3712 transitions. Word has length 55 [2024-11-14 04:39:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:22,829 INFO L471 AbstractCegarLoop]: Abstraction has 2872 states and 3712 transitions. [2024-11-14 04:39:22,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3712 transitions. [2024-11-14 04:39:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:39:22,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:22,832 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:22,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:39:22,833 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:22,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 772696843, now seen corresponding path program 1 times [2024-11-14 04:39:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804992895] [2024-11-14 04:39:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:22,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:22,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804992895] [2024-11-14 04:39:22,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804992895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:22,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:22,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:22,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439056193] [2024-11-14 04:39:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:22,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:22,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:22,940 INFO L87 Difference]: Start difference. First operand 2872 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:23,125 INFO L93 Difference]: Finished difference Result 5772 states and 7594 transitions. [2024-11-14 04:39:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-14 04:39:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:23,140 INFO L225 Difference]: With dead ends: 5772 [2024-11-14 04:39:23,144 INFO L226 Difference]: Without dead ends: 3961 [2024-11-14 04:39:23,147 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 [2024-11-14 04:39:23,148 INFO L432 NwaCegarLoop]: 1076 mSDtfsCounter, 577 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:23,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1771 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:39:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2024-11-14 04:39:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3955. [2024-11-14 04:39:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3949 states have (on average 1.2864016206634592) internal successors, (5080), 3954 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5080 transitions. [2024-11-14 04:39:23,262 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5080 transitions. Word has length 55 [2024-11-14 04:39:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:23,262 INFO L471 AbstractCegarLoop]: Abstraction has 3955 states and 5080 transitions. [2024-11-14 04:39:23,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5080 transitions. [2024-11-14 04:39:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:39:23,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:23,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:23,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:39:23,266 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:23,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2137132613, now seen corresponding path program 1 times [2024-11-14 04:39:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493394374] [2024-11-14 04:39:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:24,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493394374] [2024-11-14 04:39:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493394374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:39:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016269872] [2024-11-14 04:39:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:24,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:39:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:39:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:39:24,256 INFO L87 Difference]: Start difference. First operand 3955 states and 5080 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:25,733 INFO L93 Difference]: Finished difference Result 7662 states and 10012 transitions. [2024-11-14 04:39:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:39:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 04:39:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:25,752 INFO L225 Difference]: With dead ends: 7662 [2024-11-14 04:39:25,752 INFO L226 Difference]: Without dead ends: 7415 [2024-11-14 04:39:25,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-14 04:39:25,756 INFO L432 NwaCegarLoop]: 979 mSDtfsCounter, 4069 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:25,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 4523 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:39:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2024-11-14 04:39:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 3942. [2024-11-14 04:39:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3937 states have (on average 1.286512573025146) internal successors, (5065), 3941 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5065 transitions. [2024-11-14 04:39:25,883 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5065 transitions. Word has length 56 [2024-11-14 04:39:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:25,883 INFO L471 AbstractCegarLoop]: Abstraction has 3942 states and 5065 transitions. [2024-11-14 04:39:25,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5065 transitions. [2024-11-14 04:39:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:39:25,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:25,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:25,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:39:25,887 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:25,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1716509337, now seen corresponding path program 1 times [2024-11-14 04:39:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517950906] [2024-11-14 04:39:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:25,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:25,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517950906] [2024-11-14 04:39:25,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517950906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:25,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:25,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502431989] [2024-11-14 04:39:25,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:25,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:25,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:25,989 INFO L87 Difference]: Start difference. First operand 3942 states and 5065 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:26,167 INFO L93 Difference]: Finished difference Result 7053 states and 9163 transitions. [2024-11-14 04:39:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 04:39:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:26,177 INFO L225 Difference]: With dead ends: 7053 [2024-11-14 04:39:26,177 INFO L226 Difference]: Without dead ends: 4058 [2024-11-14 04:39:26,182 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 [2024-11-14 04:39:26,182 INFO L432 NwaCegarLoop]: 766 mSDtfsCounter, 744 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:26,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1100 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2024-11-14 04:39:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3260. [2024-11-14 04:39:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3256 states have (on average 1.2939189189189189) internal successors, (4213), 3259 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4213 transitions. [2024-11-14 04:39:26,253 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4213 transitions. Word has length 56 [2024-11-14 04:39:26,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:26,253 INFO L471 AbstractCegarLoop]: Abstraction has 3260 states and 4213 transitions. [2024-11-14 04:39:26,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4213 transitions. [2024-11-14 04:39:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:39:26,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:26,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:26,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 04:39:26,257 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:26,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1650159387, now seen corresponding path program 1 times [2024-11-14 04:39:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109517779] [2024-11-14 04:39:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:26,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:26,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109517779] [2024-11-14 04:39:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109517779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028790655] [2024-11-14 04:39:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:26,352 INFO L87 Difference]: Start difference. First operand 3260 states and 4213 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:26,497 INFO L93 Difference]: Finished difference Result 5975 states and 7833 transitions. [2024-11-14 04:39:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 04:39:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:26,505 INFO L225 Difference]: With dead ends: 5975 [2024-11-14 04:39:26,506 INFO L226 Difference]: Without dead ends: 3415 [2024-11-14 04:39:26,509 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 [2024-11-14 04:39:26,510 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 571 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:26,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 882 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2024-11-14 04:39:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 2759. [2024-11-14 04:39:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2756 states have (on average 1.2982583454281567) internal successors, (3578), 2758 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3578 transitions. [2024-11-14 04:39:26,563 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3578 transitions. Word has length 56 [2024-11-14 04:39:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:26,563 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 3578 transitions. [2024-11-14 04:39:26,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3578 transitions. [2024-11-14 04:39:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:39:26,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:26,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:26,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 04:39:26,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:26,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash 235795551, now seen corresponding path program 1 times [2024-11-14 04:39:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:26,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808969668] [2024-11-14 04:39:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:26,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808969668] [2024-11-14 04:39:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808969668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32588466] [2024-11-14 04:39:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:26,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:26,669 INFO L87 Difference]: Start difference. First operand 2759 states and 3578 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:26,841 INFO L93 Difference]: Finished difference Result 5083 states and 6666 transitions. [2024-11-14 04:39:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 04:39:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:26,848 INFO L225 Difference]: With dead ends: 5083 [2024-11-14 04:39:26,848 INFO L226 Difference]: Without dead ends: 2657 [2024-11-14 04:39:26,851 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 [2024-11-14 04:39:26,852 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 484 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:26,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 775 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2024-11-14 04:39:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2326. [2024-11-14 04:39:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2323 states have (on average 1.303486870426173) internal successors, (3028), 2325 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3028 transitions. [2024-11-14 04:39:26,893 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3028 transitions. Word has length 56 [2024-11-14 04:39:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:26,894 INFO L471 AbstractCegarLoop]: Abstraction has 2326 states and 3028 transitions. [2024-11-14 04:39:26,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3028 transitions. [2024-11-14 04:39:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:39:26,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:26,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:26,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 04:39:26,896 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:26,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1739046160, now seen corresponding path program 1 times [2024-11-14 04:39:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92285116] [2024-11-14 04:39:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:27,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:27,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92285116] [2024-11-14 04:39:27,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92285116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:27,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 04:39:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416143385] [2024-11-14 04:39:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:39:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:39:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:39:27,928 INFO L87 Difference]: Start difference. First operand 2326 states and 3028 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:29,478 INFO L93 Difference]: Finished difference Result 5724 states and 7495 transitions. [2024-11-14 04:39:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:39:29,478 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-14 04:39:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:29,492 INFO L225 Difference]: With dead ends: 5724 [2024-11-14 04:39:29,492 INFO L226 Difference]: Without dead ends: 5720 [2024-11-14 04:39:29,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-11-14 04:39:29,495 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 3258 mSDsluCounter, 3736 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3258 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:29,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3258 Valid, 4264 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 04:39:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2024-11-14 04:39:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 2322. [2024-11-14 04:39:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2320 states have (on average 1.303448275862069) internal successors, (3024), 2321 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3024 transitions. [2024-11-14 04:39:29,569 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3024 transitions. Word has length 57 [2024-11-14 04:39:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:29,570 INFO L471 AbstractCegarLoop]: Abstraction has 2322 states and 3024 transitions. [2024-11-14 04:39:29,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3024 transitions. [2024-11-14 04:39:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:39:29,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:29,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:29,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 04:39:29,573 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:29,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:29,574 INFO L85 PathProgramCache]: Analyzing trace with hash 503772602, now seen corresponding path program 1 times [2024-11-14 04:39:29,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163693510] [2024-11-14 04:39:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:29,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:30,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:30,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163693510] [2024-11-14 04:39:30,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163693510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:30,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:30,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:39:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118782410] [2024-11-14 04:39:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:30,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:39:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:30,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:39:30,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:39:30,347 INFO L87 Difference]: Start difference. First operand 2322 states and 3024 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:31,495 INFO L93 Difference]: Finished difference Result 4124 states and 5350 transitions. [2024-11-14 04:39:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:39:31,495 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-14 04:39:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:31,504 INFO L225 Difference]: With dead ends: 4124 [2024-11-14 04:39:31,504 INFO L226 Difference]: Without dead ends: 3857 [2024-11-14 04:39:31,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:39:31,506 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 2879 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:31,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2133 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:39:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2024-11-14 04:39:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 2289. [2024-11-14 04:39:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2288 states have (on average 1.304632867132867) internal successors, (2985), 2288 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2985 transitions. [2024-11-14 04:39:31,548 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2985 transitions. Word has length 57 [2024-11-14 04:39:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:31,548 INFO L471 AbstractCegarLoop]: Abstraction has 2289 states and 2985 transitions. [2024-11-14 04:39:31,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2985 transitions. [2024-11-14 04:39:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:39:31,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:31,550 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:31,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 04:39:31,551 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:31,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -623939390, now seen corresponding path program 1 times [2024-11-14 04:39:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132652378] [2024-11-14 04:39:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:31,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132652378] [2024-11-14 04:39:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132652378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:39:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88750331] [2024-11-14 04:39:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:39:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:39:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:39:31,721 INFO L87 Difference]: Start difference. First operand 2289 states and 2985 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-11-14 04:39:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:31,864 INFO L93 Difference]: Finished difference Result 3847 states and 5088 transitions. [2024-11-14 04:39:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:39:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-14 04:39:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:31,869 INFO L225 Difference]: With dead ends: 3847 [2024-11-14 04:39:31,869 INFO L226 Difference]: Without dead ends: 2059 [2024-11-14 04:39:31,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:39:31,872 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 640 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:31,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 755 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2024-11-14 04:39:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2055. [2024-11-14 04:39:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2054 states have (on average 1.294060370009737) internal successors, (2658), 2054 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2658 transitions. [2024-11-14 04:39:31,902 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2658 transitions. Word has length 61 [2024-11-14 04:39:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:31,902 INFO L471 AbstractCegarLoop]: Abstraction has 2055 states and 2658 transitions. [2024-11-14 04:39:31,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-11-14 04:39:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2658 transitions. [2024-11-14 04:39:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 04:39:31,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:31,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:31,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 04:39:31,904 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:31,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:31,906 INFO L85 PathProgramCache]: Analyzing trace with hash 397628825, now seen corresponding path program 1 times [2024-11-14 04:39:31,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:31,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197721920] [2024-11-14 04:39:31,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:31,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:32,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197721920] [2024-11-14 04:39:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197721920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889735137] [2024-11-14 04:39:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:32,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:32,090 INFO L87 Difference]: Start difference. First operand 2055 states and 2658 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:32,216 INFO L93 Difference]: Finished difference Result 4375 states and 5802 transitions. [2024-11-14 04:39:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-11-14 04:39:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:32,223 INFO L225 Difference]: With dead ends: 4375 [2024-11-14 04:39:32,224 INFO L226 Difference]: Without dead ends: 2927 [2024-11-14 04:39:32,225 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 [2024-11-14 04:39:32,226 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 282 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:32,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 698 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2024-11-14 04:39:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2691. [2024-11-14 04:39:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.2951672862453532) internal successors, (3484), 2690 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3484 transitions. [2024-11-14 04:39:32,267 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3484 transitions. Word has length 62 [2024-11-14 04:39:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:32,267 INFO L471 AbstractCegarLoop]: Abstraction has 2691 states and 3484 transitions. [2024-11-14 04:39:32,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3484 transitions. [2024-11-14 04:39:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 04:39:32,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:32,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:32,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 04:39:32,270 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:32,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1236897276, now seen corresponding path program 1 times [2024-11-14 04:39:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057850165] [2024-11-14 04:39:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:32,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057850165] [2024-11-14 04:39:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057850165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47465639] [2024-11-14 04:39:32,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:32,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:32,429 INFO L87 Difference]: Start difference. First operand 2691 states and 3484 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:32,543 INFO L93 Difference]: Finished difference Result 6026 states and 7961 transitions. [2024-11-14 04:39:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:32,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-14 04:39:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:32,553 INFO L225 Difference]: With dead ends: 6026 [2024-11-14 04:39:32,553 INFO L226 Difference]: Without dead ends: 4004 [2024-11-14 04:39:32,556 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 [2024-11-14 04:39:32,557 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 227 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:32,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 726 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2024-11-14 04:39:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3650. [2024-11-14 04:39:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 1.290764593039189) internal successors, (4710), 3649 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4710 transitions. [2024-11-14 04:39:32,615 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4710 transitions. Word has length 63 [2024-11-14 04:39:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:32,616 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 4710 transitions. [2024-11-14 04:39:32,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4710 transitions. [2024-11-14 04:39:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 04:39:32,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:32,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:32,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 04:39:32,618 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:32,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -660543680, now seen corresponding path program 1 times [2024-11-14 04:39:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:32,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494825028] [2024-11-14 04:39:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:32,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:33,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:33,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494825028] [2024-11-14 04:39:33,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494825028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:33,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:33,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:39:33,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243568667] [2024-11-14 04:39:33,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:33,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:39:33,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:39:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:39:33,198 INFO L87 Difference]: Start difference. First operand 3650 states and 4710 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:33,582 INFO L93 Difference]: Finished difference Result 7413 states and 9629 transitions. [2024-11-14 04:39:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:39:33,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2024-11-14 04:39:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:33,600 INFO L225 Difference]: With dead ends: 7413 [2024-11-14 04:39:33,600 INFO L226 Difference]: Without dead ends: 7411 [2024-11-14 04:39:33,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:39:33,604 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 1430 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:33,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2200 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:39:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7411 states. [2024-11-14 04:39:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7411 to 4238. [2024-11-14 04:39:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 4237 states have (on average 1.2855794194005192) internal successors, (5447), 4237 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5447 transitions. [2024-11-14 04:39:33,686 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5447 transitions. Word has length 68 [2024-11-14 04:39:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:33,686 INFO L471 AbstractCegarLoop]: Abstraction has 4238 states and 5447 transitions. [2024-11-14 04:39:33,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5447 transitions. [2024-11-14 04:39:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 04:39:33,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:33,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:33,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 04:39:33,690 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:33,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2095616936, now seen corresponding path program 1 times [2024-11-14 04:39:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:33,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816163820] [2024-11-14 04:39:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:34,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816163820] [2024-11-14 04:39:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816163820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:39:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307924587] [2024-11-14 04:39:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:34,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:39:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:39:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:39:34,244 INFO L87 Difference]: Start difference. First operand 4238 states and 5447 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:34,739 INFO L93 Difference]: Finished difference Result 7672 states and 9943 transitions. [2024-11-14 04:39:34,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:39:34,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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 74 [2024-11-14 04:39:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:34,759 INFO L225 Difference]: With dead ends: 7672 [2024-11-14 04:39:34,759 INFO L226 Difference]: Without dead ends: 7670 [2024-11-14 04:39:34,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:39:34,762 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 866 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:34,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2936 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:39:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7670 states. [2024-11-14 04:39:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7670 to 4567. [2024-11-14 04:39:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4567 states, 4566 states have (on average 1.282742006132282) internal successors, (5857), 4566 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5857 transitions. [2024-11-14 04:39:34,850 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5857 transitions. Word has length 74 [2024-11-14 04:39:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:34,851 INFO L471 AbstractCegarLoop]: Abstraction has 4567 states and 5857 transitions. [2024-11-14 04:39:34,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5857 transitions. [2024-11-14 04:39:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 04:39:34,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:34,853 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:34,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 04:39:34,854 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:34,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash 229070017, now seen corresponding path program 1 times [2024-11-14 04:39:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556252765] [2024-11-14 04:39:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:35,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556252765] [2024-11-14 04:39:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556252765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:35,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:35,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:39:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348143386] [2024-11-14 04:39:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:35,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:39:35,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:39:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:39:35,491 INFO L87 Difference]: Start difference. First operand 4567 states and 5857 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:35,957 INFO L93 Difference]: Finished difference Result 7779 states and 10057 transitions. [2024-11-14 04:39:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:39:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2024-11-14 04:39:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:35,976 INFO L225 Difference]: With dead ends: 7779 [2024-11-14 04:39:35,976 INFO L226 Difference]: Without dead ends: 7777 [2024-11-14 04:39:35,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:39:35,981 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 875 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:35,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2864 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:39:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2024-11-14 04:39:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 4902. [2024-11-14 04:39:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4901 states have (on average 1.2801469087941237) internal successors, (6274), 4901 states have internal predecessors, (6274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6274 transitions. [2024-11-14 04:39:36,081 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6274 transitions. Word has length 75 [2024-11-14 04:39:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:36,081 INFO L471 AbstractCegarLoop]: Abstraction has 4902 states and 6274 transitions. [2024-11-14 04:39:36,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6274 transitions. [2024-11-14 04:39:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 04:39:36,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:36,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:36,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 04:39:36,085 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:36,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash -495396898, now seen corresponding path program 1 times [2024-11-14 04:39:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956951052] [2024-11-14 04:39:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:36,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956951052] [2024-11-14 04:39:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956951052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:36,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 04:39:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107944834] [2024-11-14 04:39:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:36,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:39:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:39:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:39:36,660 INFO L87 Difference]: Start difference. First operand 4902 states and 6274 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:37,060 INFO L93 Difference]: Finished difference Result 7334 states and 9484 transitions. [2024-11-14 04:39:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:39:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2024-11-14 04:39:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:37,083 INFO L225 Difference]: With dead ends: 7334 [2024-11-14 04:39:37,083 INFO L226 Difference]: Without dead ends: 7332 [2024-11-14 04:39:37,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:39:37,087 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 910 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:37,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2556 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:39:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2024-11-14 04:39:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 4866. [2024-11-14 04:39:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 4865 states have (on average 1.2805755395683454) internal successors, (6230), 4865 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 6230 transitions. [2024-11-14 04:39:37,181 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 6230 transitions. Word has length 75 [2024-11-14 04:39:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:37,181 INFO L471 AbstractCegarLoop]: Abstraction has 4866 states and 6230 transitions. [2024-11-14 04:39:37,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 6230 transitions. [2024-11-14 04:39:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 04:39:37,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:37,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:37,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-14 04:39:37,185 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:37,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1871640008, now seen corresponding path program 1 times [2024-11-14 04:39:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:37,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393037963] [2024-11-14 04:39:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:37,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:37,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393037963] [2024-11-14 04:39:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393037963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:37,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:37,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:39:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927663937] [2024-11-14 04:39:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:37,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:39:37,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:37,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:39:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:39:37,380 INFO L87 Difference]: Start difference. First operand 4866 states and 6230 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:37,515 INFO L93 Difference]: Finished difference Result 9274 states and 12106 transitions. [2024-11-14 04:39:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:39:37,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2024-11-14 04:39:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:37,532 INFO L225 Difference]: With dead ends: 9274 [2024-11-14 04:39:37,532 INFO L226 Difference]: Without dead ends: 6448 [2024-11-14 04:39:37,536 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 [2024-11-14 04:39:37,537 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 286 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:37,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 693 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:39:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2024-11-14 04:39:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 6014. [2024-11-14 04:39:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 6013 states have (on average 1.2778978879095293) internal successors, (7684), 6013 states have internal predecessors, (7684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 7684 transitions. [2024-11-14 04:39:37,634 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 7684 transitions. Word has length 78 [2024-11-14 04:39:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:37,634 INFO L471 AbstractCegarLoop]: Abstraction has 6014 states and 7684 transitions. [2024-11-14 04:39:37,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 7684 transitions. [2024-11-14 04:39:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:39:37,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:37,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:37,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-14 04:39:37,638 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:37,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash 767008424, now seen corresponding path program 1 times [2024-11-14 04:39:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:37,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921865821] [2024-11-14 04:39:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:39,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921865821] [2024-11-14 04:39:39,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921865821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:39:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115758404] [2024-11-14 04:39:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:39,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:39:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:39:39,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:39:39,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:39:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:39,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:39:39,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:39:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:39:40,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:39:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115758404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:40,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:39:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2024-11-14 04:39:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615162988] [2024-11-14 04:39:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:40,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:39:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:39:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:39:40,194 INFO L87 Difference]: Start difference. First operand 6014 states and 7684 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:40,953 INFO L93 Difference]: Finished difference Result 9284 states and 11869 transitions. [2024-11-14 04:39:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:39:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 79 [2024-11-14 04:39:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:40,969 INFO L225 Difference]: With dead ends: 9284 [2024-11-14 04:39:40,969 INFO L226 Difference]: Without dead ends: 6744 [2024-11-14 04:39:40,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:39:40,973 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 1029 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:40,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 816 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:39:40,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2024-11-14 04:39:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 6000. [2024-11-14 04:39:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 5999 states have (on average 1.2783797299549926) internal successors, (7669), 5999 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 7669 transitions. [2024-11-14 04:39:41,059 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 7669 transitions. Word has length 79 [2024-11-14 04:39:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:41,059 INFO L471 AbstractCegarLoop]: Abstraction has 6000 states and 7669 transitions. [2024-11-14 04:39:41,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 7669 transitions. [2024-11-14 04:39:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:39:41,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:41,062 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:41,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:39:41,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:39:41,267 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:41,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1073031664, now seen corresponding path program 1 times [2024-11-14 04:39:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416267561] [2024-11-14 04:39:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:41,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:39:41,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416267561] [2024-11-14 04:39:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416267561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:39:41,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:39:41,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:39:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744943983] [2024-11-14 04:39:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:39:41,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:39:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:39:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:39:41,698 INFO L87 Difference]: Start difference. First operand 6000 states and 7669 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:42,761 INFO L93 Difference]: Finished difference Result 9520 states and 12105 transitions. [2024-11-14 04:39:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:39:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 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 79 [2024-11-14 04:39:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:42,778 INFO L225 Difference]: With dead ends: 9520 [2024-11-14 04:39:42,778 INFO L226 Difference]: Without dead ends: 6982 [2024-11-14 04:39:42,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:39:42,782 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1748 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:42,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 1047 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:39:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2024-11-14 04:39:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 5980. [2024-11-14 04:39:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5979 states have (on average 1.2789764174611138) internal successors, (7647), 5979 states have internal predecessors, (7647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 7647 transitions. [2024-11-14 04:39:42,879 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 7647 transitions. Word has length 79 [2024-11-14 04:39:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:42,879 INFO L471 AbstractCegarLoop]: Abstraction has 5980 states and 7647 transitions. [2024-11-14 04:39:42,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:39:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 7647 transitions. [2024-11-14 04:39:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:39:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:42,882 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:39:42,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-14 04:39:42,882 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:39:42,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1769204466, now seen corresponding path program 1 times [2024-11-14 04:39:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:42,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065669328] [2024-11-14 04:39:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:44,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065669328] [2024-11-14 04:39:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065669328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:39:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750743150] [2024-11-14 04:39:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:39:44,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:39:44,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:39:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:39:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:44,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-14 04:39:44,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:39:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:47,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:39:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:39:55,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750743150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:39:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67144892] [2024-11-14 04:39:55,350 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-14 04:39:55,350 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:39:55,354 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:39:55,360 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:39:55,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:40:06,773 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [67144892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:53,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:41:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [16, 20, 20] total 84 [2024-11-14 04:41:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762103865] [2024-11-14 04:41:53,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:53,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 04:41:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 04:41:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=5786, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 04:41:53,680 INFO L87 Difference]: Start difference. First operand 5980 states and 7647 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:42:17,085 INFO L93 Difference]: Finished difference Result 8510 states and 10921 transitions. [2024-11-14 04:42:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 04:42:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 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 80 [2024-11-14 04:42:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:42:17,095 INFO L225 Difference]: With dead ends: 8510 [2024-11-14 04:42:17,096 INFO L226 Difference]: Without dead ends: 5962 [2024-11-14 04:42:17,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 109.4s TimeCoverageRelationStatistics Valid=1186, Invalid=5786, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 04:42:17,101 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 7 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6318 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 6318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:42:17,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 606 Invalid, 6318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6318 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2024-11-14 04:42:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2024-11-14 04:42:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5962. [2024-11-14 04:42:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 1.27948330816977) internal successors, (7627), 5961 states have internal predecessors, (7627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 7627 transitions. [2024-11-14 04:42:17,180 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 7627 transitions. Word has length 80 [2024-11-14 04:42:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:42:17,180 INFO L471 AbstractCegarLoop]: Abstraction has 5962 states and 7627 transitions. [2024-11-14 04:42:17,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:17,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 7627 transitions. [2024-11-14 04:42:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:42:17,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:42:17,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:42:17,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:42:17,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 04:42:17,383 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:42:17,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:42:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1142537267, now seen corresponding path program 1 times [2024-11-14 04:42:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:42:17,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934646349] [2024-11-14 04:42:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:42:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:42:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:42:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:18,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:42:18,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934646349] [2024-11-14 04:42:18,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934646349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:42:18,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898786422] [2024-11-14 04:42:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:42:18,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:42:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:42:18,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:42:18,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:42:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:42:18,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-14 04:42:18,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:42:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:21,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:42:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:42:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898786422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:42:29,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2086735112] [2024-11-14 04:42:29,752 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2024-11-14 04:42:29,752 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:42:29,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:42:29,753 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:42:29,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:42:43,739 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:44:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2086735112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:44:44,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:44:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [16, 20, 21] total 89 [2024-11-14 04:44:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648085328] [2024-11-14 04:44:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:44:44,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-14 04:44:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:44:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-14 04:44:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1254, Invalid=6578, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 04:44:44,881 INFO L87 Difference]: Start difference. First operand 5962 states and 7627 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:13,409 INFO L93 Difference]: Finished difference Result 8594 states and 11034 transitions. [2024-11-14 04:45:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-14 04:45:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-14 04:45:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:13,417 INFO L225 Difference]: With dead ends: 8594 [2024-11-14 04:45:13,417 INFO L226 Difference]: Without dead ends: 5948 [2024-11-14 04:45:13,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3804 ImplicationChecksByTransitivity, 123.6s TimeCoverageRelationStatistics Valid=1254, Invalid=6578, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 04:45:13,423 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 6 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 8421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 8422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:13,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 608 Invalid, 8422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 8421 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time] [2024-11-14 04:45:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2024-11-14 04:45:13,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 5948. [2024-11-14 04:45:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 1.2798049436690768) internal successors, (7611), 5947 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 7611 transitions. [2024-11-14 04:45:13,504 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 7611 transitions. Word has length 80 [2024-11-14 04:45:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:13,504 INFO L471 AbstractCegarLoop]: Abstraction has 5948 states and 7611 transitions. [2024-11-14 04:45:13,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 7611 transitions. [2024-11-14 04:45:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:45:13,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:13,507 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:45:13,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:45:13,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 04:45:13,711 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:45:13,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash -904258248, now seen corresponding path program 1 times [2024-11-14 04:45:13,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:13,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250210940] [2024-11-14 04:45:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:14,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:14,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250210940] [2024-11-14 04:45:14,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250210940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:45:14,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272464702] [2024-11-14 04:45:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:14,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:45:14,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:45:14,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:45:14,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:45:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:15,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 04:45:15,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:45:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:45:16,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:45:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272464702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:45:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2024-11-14 04:45:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950127552] [2024-11-14 04:45:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:16,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:45:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:45:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-11-14 04:45:16,383 INFO L87 Difference]: Start difference. First operand 5948 states and 7611 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:18,177 INFO L93 Difference]: Finished difference Result 10911 states and 14031 transitions. [2024-11-14 04:45:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:45:18,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 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 80 [2024-11-14 04:45:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:18,184 INFO L225 Difference]: With dead ends: 10911 [2024-11-14 04:45:18,184 INFO L226 Difference]: Without dead ends: 8281 [2024-11-14 04:45:18,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:45:18,187 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 1813 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:18,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1957 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:45:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2024-11-14 04:45:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6606. [2024-11-14 04:45:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 6605 states have (on average 1.2816048448145345) internal successors, (8465), 6605 states have internal predecessors, (8465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 8465 transitions. [2024-11-14 04:45:18,281 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 8465 transitions. Word has length 80 [2024-11-14 04:45:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:18,281 INFO L471 AbstractCegarLoop]: Abstraction has 6606 states and 8465 transitions. [2024-11-14 04:45:18,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 8465 transitions. [2024-11-14 04:45:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:45:18,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:18,283 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:45:18,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:45:18,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 04:45:18,484 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:45:18,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1311489257, now seen corresponding path program 1 times [2024-11-14 04:45:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168487234] [2024-11-14 04:45:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:18,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:19,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:19,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168487234] [2024-11-14 04:45:19,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168487234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:45:19,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074752645] [2024-11-14 04:45:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:19,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:45:19,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:45:19,494 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:45:19,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:45:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:19,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-14 04:45:19,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:45:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:45:20,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:45:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074752645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:45:20,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:45:20,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 27 [2024-11-14 04:45:20,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329233466] [2024-11-14 04:45:20,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:45:20,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:45:20,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:45:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:45:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-11-14 04:45:20,755 INFO L87 Difference]: Start difference. First operand 6606 states and 8465 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:21,809 INFO L93 Difference]: Finished difference Result 12768 states and 16314 transitions. [2024-11-14 04:45:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:45:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-14 04:45:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:21,820 INFO L225 Difference]: With dead ends: 12768 [2024-11-14 04:45:21,820 INFO L226 Difference]: Without dead ends: 10246 [2024-11-14 04:45:21,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:45:21,826 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 2864 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:21,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 3595 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:45:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2024-11-14 04:45:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 6882. [2024-11-14 04:45:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6882 states, 6881 states have (on average 1.281645109722424) internal successors, (8819), 6881 states have internal predecessors, (8819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6882 states to 6882 states and 8819 transitions. [2024-11-14 04:45:21,931 INFO L78 Accepts]: Start accepts. Automaton has 6882 states and 8819 transitions. Word has length 81 [2024-11-14 04:45:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:21,931 INFO L471 AbstractCegarLoop]: Abstraction has 6882 states and 8819 transitions. [2024-11-14 04:45:21,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:45:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6882 states and 8819 transitions. [2024-11-14 04:45:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 04:45:21,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:21,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:45:21,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:45:22,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 04:45:22,134 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:45:22,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash -861535858, now seen corresponding path program 1 times [2024-11-14 04:45:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:45:22,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577648802] [2024-11-14 04:45:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:45:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:23,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:45:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577648802] [2024-11-14 04:45:23,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577648802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:45:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048404705] [2024-11-14 04:45:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:45:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:45:23,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:45:23,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:45:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:23,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-14 04:45:23,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:45:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:25,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:45:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048404705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:45:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1813145952] [2024-11-14 04:45:34,456 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2024-11-14 04:45:34,457 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:45:34,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:45:34,457 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:45:34,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:46:18,224 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:48:13,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '298476#(and (= ~nomsg~0 ~p1_new~0) (= ~p3_new~0 ~nomsg~0) (<= ~mode3~0 1) (= ~nomsg~0 ~p2_new~0) (or (< 1 (+ ~st3~0 ~st2~0 ~st1~0)) (and (<= 3 ~r1~0) (not (= (+ ~st3~0 ~st2~0 ~st1~0) 1)))) (exists ((|v_ULTIMATE.start_main_~assert__arg~1#1_23| Int) (|v_ULTIMATE.start_main_~__tmp_2~0#1_5| Int)) (and (= ~__return_5270~0 0) (= |v_ULTIMATE.start_main_~__tmp_2~0#1_5| 0) (= 0 |v_ULTIMATE.start_main_~assert__arg~1#1_23|))))' at error location [2024-11-14 04:48:13,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:48:13,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:48:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 53 [2024-11-14 04:48:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668004363] [2024-11-14 04:48:13,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:48:13,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-14 04:48:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-14 04:48:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=10389, Unknown=0, NotChecked=0, Total=11772 [2024-11-14 04:48:13,181 INFO L87 Difference]: Start difference. First operand 6882 states and 8819 transitions. Second operand has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:49,792 INFO L93 Difference]: Finished difference Result 41277 states and 54002 transitions. [2024-11-14 04:49:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2024-11-14 04:49:49,793 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 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 82 [2024-11-14 04:49:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:49,825 INFO L225 Difference]: With dead ends: 41277 [2024-11-14 04:49:49,825 INFO L226 Difference]: Without dead ends: 38689 [2024-11-14 04:49:49,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72380 ImplicationChecksByTransitivity, 202.8s TimeCoverageRelationStatistics Valid=17194, Invalid=139226, Unknown=0, NotChecked=0, Total=156420 [2024-11-14 04:49:49,848 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 6347 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 8987 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6347 SdHoareTripleChecker+Valid, 6159 SdHoareTripleChecker+Invalid, 9393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 8987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:49,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6347 Valid, 6159 Invalid, 9393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [406 Valid, 8987 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2024-11-14 04:49:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38689 states. [2024-11-14 04:49:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38689 to 29389. [2024-11-14 04:49:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29389 states, 29388 states have (on average 1.2975364094188104) internal successors, (38132), 29388 states have internal predecessors, (38132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29389 states to 29389 states and 38132 transitions. [2024-11-14 04:49:50,200 INFO L78 Accepts]: Start accepts. Automaton has 29389 states and 38132 transitions. Word has length 82 [2024-11-14 04:49:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:50,200 INFO L471 AbstractCegarLoop]: Abstraction has 29389 states and 38132 transitions. [2024-11-14 04:49:50,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29389 states and 38132 transitions. [2024-11-14 04:49:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 04:49:50,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:50,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:50,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:49:50,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:50,404 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:49:50,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1581185040, now seen corresponding path program 1 times [2024-11-14 04:49:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666888471] [2024-11-14 04:49:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:49:50,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666888471] [2024-11-14 04:49:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666888471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:49:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:49:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417143917] [2024-11-14 04:49:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:50,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:49:50,475 INFO L87 Difference]: Start difference. First operand 29389 states and 38132 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:50,583 INFO L93 Difference]: Finished difference Result 39652 states and 51352 transitions. [2024-11-14 04:49:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 82 [2024-11-14 04:49:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:50,608 INFO L225 Difference]: With dead ends: 39652 [2024-11-14 04:49:50,609 INFO L226 Difference]: Without dead ends: 27483 [2024-11-14 04:49:50,618 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 [2024-11-14 04:49:50,619 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 138 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:50,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 790 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:49:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27483 states. [2024-11-14 04:49:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27483 to 27276. [2024-11-14 04:49:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27276 states, 27275 states have (on average 1.2921723189734189) internal successors, (35244), 27275 states have internal predecessors, (35244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 35244 transitions. [2024-11-14 04:49:50,881 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 35244 transitions. Word has length 82 [2024-11-14 04:49:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:50,881 INFO L471 AbstractCegarLoop]: Abstraction has 27276 states and 35244 transitions. [2024-11-14 04:49:50,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 35244 transitions. [2024-11-14 04:49:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 04:49:50,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:50,884 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:50,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-14 04:49:50,884 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:49:50,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash -108032629, now seen corresponding path program 1 times [2024-11-14 04:49:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:50,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30223880] [2024-11-14 04:49:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:50,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:49:52,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30223880] [2024-11-14 04:49:52,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30223880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362264616] [2024-11-14 04:49:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:52,070 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:49:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:52,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 04:49:52,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:49:52,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362264616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:52,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:52,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2024-11-14 04:49:52,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440887951] [2024-11-14 04:49:52,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:52,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:49:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:49:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-14 04:49:52,808 INFO L87 Difference]: Start difference. First operand 27276 states and 35244 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:53,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:53,565 INFO L93 Difference]: Finished difference Result 37669 states and 48470 transitions. [2024-11-14 04:49:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:49:53,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 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 83 [2024-11-14 04:49:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:53,594 INFO L225 Difference]: With dead ends: 37669 [2024-11-14 04:49:53,594 INFO L226 Difference]: Without dead ends: 34168 [2024-11-14 04:49:53,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-14 04:49:53,603 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 1685 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:53,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1047 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:49:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34168 states. [2024-11-14 04:49:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34168 to 27276. [2024-11-14 04:49:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27276 states, 27275 states have (on average 1.2920989917506875) internal successors, (35242), 27275 states have internal predecessors, (35242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 35242 transitions. [2024-11-14 04:49:53,883 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 35242 transitions. Word has length 83 [2024-11-14 04:49:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:53,884 INFO L471 AbstractCegarLoop]: Abstraction has 27276 states and 35242 transitions. [2024-11-14 04:49:53,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 35242 transitions. [2024-11-14 04:49:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 04:49:53,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:53,885 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:53,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:49:54,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:54,086 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:49:54,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 386534618, now seen corresponding path program 1 times [2024-11-14 04:49:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:54,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293779870] [2024-11-14 04:49:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:54,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:49:54,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293779870] [2024-11-14 04:49:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293779870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:54,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:49:54,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:49:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481970557] [2024-11-14 04:49:54,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:54,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:49:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:49:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:49:54,366 INFO L87 Difference]: Start difference. First operand 27276 states and 35242 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:55,255 INFO L93 Difference]: Finished difference Result 34560 states and 44065 transitions. [2024-11-14 04:49:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:49:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 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 85 [2024-11-14 04:49:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:55,278 INFO L225 Difference]: With dead ends: 34560 [2024-11-14 04:49:55,278 INFO L226 Difference]: Without dead ends: 32775 [2024-11-14 04:49:55,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:49:55,285 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 1490 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:55,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1490 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:49:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32775 states. [2024-11-14 04:49:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32775 to 27276. [2024-11-14 04:49:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27276 states, 27275 states have (on average 1.2920623281393218) internal successors, (35241), 27275 states have internal predecessors, (35241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 35241 transitions. [2024-11-14 04:49:55,525 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 35241 transitions. Word has length 85 [2024-11-14 04:49:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:55,525 INFO L471 AbstractCegarLoop]: Abstraction has 27276 states and 35241 transitions. [2024-11-14 04:49:55,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:49:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 35241 transitions. [2024-11-14 04:49:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 04:49:55,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:55,526 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:55,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-14 04:49:55,526 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:49:55,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1649910080, now seen corresponding path program 1 times [2024-11-14 04:49:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359102372] [2024-11-14 04:49:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:49:56,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359102372] [2024-11-14 04:49:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359102372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473729953] [2024-11-14 04:49:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:56,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:56,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:56,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:49:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:56,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 04:49:56,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:49:57,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:49:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:49:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473729953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:49:59,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236590562] [2024-11-14 04:49:59,360 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2024-11-14 04:49:59,360 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:49:59,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:49:59,361 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:49:59,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:50:09,075 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:51:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [236590562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:51:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:51:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [14, 16, 14] total 66 [2024-11-14 04:51:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116340770] [2024-11-14 04:51:30,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:51:30,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 04:51:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:51:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 04:51:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=3633, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 04:51:30,336 INFO L87 Difference]: Start difference. First operand 27276 states and 35241 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:51:57,812 INFO L93 Difference]: Finished difference Result 30462 states and 39289 transitions. [2024-11-14 04:51:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:51:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 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 85 [2024-11-14 04:51:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:51:57,836 INFO L225 Difference]: With dead ends: 30462 [2024-11-14 04:51:57,836 INFO L226 Difference]: Without dead ends: 27250 [2024-11-14 04:51:57,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 82.0s TimeCoverageRelationStatistics Valid=657, Invalid=3633, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 04:51:57,843 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 5 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 8058 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 8058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:51:57,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 869 Invalid, 8058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 8058 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2024-11-14 04:51:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27250 states. [2024-11-14 04:51:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27250 to 27250. [2024-11-14 04:51:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27250 states, 27249 states have (on average 1.2922309075562406) internal successors, (35212), 27249 states have internal predecessors, (35212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27250 states to 27250 states and 35212 transitions. [2024-11-14 04:51:58,108 INFO L78 Accepts]: Start accepts. Automaton has 27250 states and 35212 transitions. Word has length 85 [2024-11-14 04:51:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:51:58,108 INFO L471 AbstractCegarLoop]: Abstraction has 27250 states and 35212 transitions. [2024-11-14 04:51:58,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:51:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 27250 states and 35212 transitions. [2024-11-14 04:51:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 04:51:58,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:51:58,109 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:51:58,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:51:58,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:51:58,310 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 04:51:58,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:51:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1021273735, now seen corresponding path program 1 times [2024-11-14 04:51:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:51:58,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688167237] [2024-11-14 04:51:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:51:58,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:51:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:51:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:51:59,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:51:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688167237] [2024-11-14 04:51:59,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688167237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:51:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514899494] [2024-11-14 04:51:59,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:51:59,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:51:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:51:59,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:51:59,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e974a27e-17c0-43c7-bfc2-8514c5d3496a/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:51:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:51:59,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 04:51:59,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:52:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:00,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:52:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:52:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514899494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:52:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138946624] [2024-11-14 04:52:02,095 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2024-11-14 04:52:02,095 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:52:02,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:52:02,095 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:52:02,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs